JP6122766B2 - Optical fiber side input / output device and optical fiber side input / output method - Google Patents

Optical fiber side input / output device and optical fiber side input / output method Download PDF

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JP6122766B2
JP6122766B2 JP2013230584A JP2013230584A JP6122766B2 JP 6122766 B2 JP6122766 B2 JP 6122766B2 JP 2013230584 A JP2013230584 A JP 2013230584A JP 2013230584 A JP2013230584 A JP 2013230584A JP 6122766 B2 JP6122766 B2 JP 6122766B2
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side groove
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JP2015090445A (en
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清倉 孝規
孝規 清倉
廣田 栄伸
栄伸 廣田
友裕 川野
友裕 川野
誠 真保
誠 真保
真鍋 哲也
哲也 真鍋
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Nippon Telegraph and Telephone Corp
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Description

本発明は、光ファイバの側方から光信号を光ファイバに入出力する光ファイバ側方入出力装置と光ファイバ側方入出力方法とに関する。   The present invention relates to an optical fiber side input / output device and an optical fiber side input / output method for inputting / outputting an optical signal to / from an optical fiber from the side of the optical fiber.

側方入出力技術とは、光ファイバの側方から、例えば、光信号を光ファイバに入力可能または光ファイバから出力可能とする技術である。この技術が実施されるためには、光ファイバにおける全反射条件が緩和され、光信号が入出力する曲げ部が光ファイバに付与される必要がある。このため光ファイバは、一時的に曲げを付与されている。このような技術は、例えば、特許文献1と非特許文献1とに開示されている。
側方入出力技術において、図6に示すように、被覆付き光ファイバ101は、円筒部103によって曲げられる。そして、光信号は、曲げ部105から外部に入出力される。図6に示すように、例えば出力される光信号は、屈折率整合部材107を経由してレンズ付きファイバプローブ109などで取得されている。屈折率整合部材107は、空気と光ファイバとの界面における反射率と、空気とレンズ付きファイバプローブ109との界面における反射率が高くなることを防止し、光ファイバとレンズ付きファイバプローブ109とを容易に光学的に結合させるために、配設されている。
The side input / output technology is a technology that enables, for example, an optical signal to be input to or output from an optical fiber from the side of the optical fiber. In order to implement this technique, it is necessary to relax the total reflection condition in the optical fiber and to provide the optical fiber with a bent portion for inputting and outputting optical signals. For this reason, the optical fiber is temporarily bent. Such a technique is disclosed in Patent Document 1 and Non-Patent Document 1, for example.
In the side input / output technology, the coated optical fiber 101 is bent by a cylindrical portion 103 as shown in FIG. The optical signal is input / output from the bending portion 105 to the outside. As shown in FIG. 6, for example, the output optical signal is acquired by the lens-equipped fiber probe 109 or the like via the refractive index matching member 107. The refractive index matching member 107 prevents the reflectance at the interface between the air and the optical fiber and the reflectance at the interface between the air and the lens-equipped fiber probe 109 from being increased. Arranged for easy optical coupling.

この技術の利用用途としては、例えば、以下の3種類、漏洩光モニタと試験光入力ツールと短瞬断切替器とが提案されている。
用途1・漏洩光モニタ:通信に影響を与えず、例えばカバー付き光ファイバからレンズ付き光ファイバへの光信号の挿入損失が保たれるように、曲げ部の曲げ具合が調整される。そして漏洩光モニタは、曲げ部から外部に出力される光信号を、レンズ付き光ファイバを通じて取得し、この光信号における信号をモニタする。
用途2・試験光入力ツール:用途1に示した光信号の進行方向における光結合効率と、用途1とは逆の光信号の進行方向(光信号がレンズ付き光ファイバからカバー付き光ファイバに進むことを示す)における光結合効率とは、入力及び出力のファイバ径が同じ場合、互いに等しい。よって試験光入力ツールにおいて、通信に影響を与えず、例えばレンズ付き光ファイバからカバー付き光ファイバへの光信号の挿入損失が保たれるように、曲げ部の曲げ具合が調整される。そして試験光入力ツールは、光信号を外部からレンズ付き光ファイバを通じて入力する。
用途3・短瞬断切替器:短瞬断切替器は、曲げ部にて光信号が入出力されると共に、光を遮断し光の経路を切り替える。
用途1乃至用途3は、例えば非特許文献2乃至非特許文献5に開示されている。
As usage applications of this technology, for example, the following three types of leakage light monitor, test light input tool, and short break switch have been proposed.
Application 1 / Leakage light monitor: The bending condition of the bent portion is adjusted so that the insertion loss of the optical signal from the optical fiber with cover to the optical fiber with lens is maintained, for example, without affecting communication. The leakage light monitor acquires an optical signal output from the bent portion to the outside through the optical fiber with a lens, and monitors the signal in the optical signal.
Application 2 / Test light input tool: Optical coupling efficiency in the traveling direction of the optical signal shown in Application 1 and the traveling direction of the optical signal opposite to that in Application 1 (the optical signal travels from the optical fiber with lens to the optical fiber with cover) The optical coupling efficiencies in FIG. 4 are equal to each other when the input and output fiber diameters are the same. Therefore, in the test light input tool, the bending condition of the bending portion is adjusted so that the insertion loss of the optical signal from the optical fiber with a lens to the optical fiber with a cover is maintained, for example, without affecting communication. The test light input tool inputs an optical signal from the outside through an optical fiber with a lens.
Application 3-Short interruption switch: The short interruption switch switches light paths by switching light paths while optical signals are input and output at the bent part.
Applications 1 to 3 are disclosed in Non-Patent Document 2 to Non-Patent Document 5, for example.

特開2009−25210号公報JP 2009-25210 A

田中、荒木、東、「ローカルインジェクションによるPON分岐線路の個別試験」、2008年電子情報通信学会総合大会 B−10−5、通信講演論文集2、PP288、2008−3Tanaka, Araki, Higashi, "Individual test of PON branch line by local injection", 2008 IEICE General Conference B-10-5, Proceedings of Communication Lecture 2, PP288, 2008-3 本田、廣田、真保、川野、真鍋、東、「小径曲げ試験における光ファイバ破断に関する検討」、2012年電子情報通信学会通信ソサイエティ大会 B−10−23、通信講演論文集2、P205Honda, Iwata, Shinho, Kawano, Manabe, Higashi, “Study on optical fiber breakage in small-diameter bending test”, 2012 IEICE Communication Society B-10-23, Communication Lectures Collection 2, P205 廣田、納戸、本多、真鍋、東、「光ファイバ側方入力技術を用いた試験光入射機構の設計検討」、社団法人電子情報通信学会、信学技法、OFT2011−84、OPE2011−210、pp.57−60、2012−3−2Iwata, Nado, Honda, Manabe, Higashi, “Design examination of test light incidence mechanism using optical fiber lateral input technology”, The Institute of Electronics, Information and Communication Engineers, IEICE Technical, OFT2011-84, OPE2011-210, pp . 57-60, 2012-3-2 真保、廣田、本多、川野、真鍋、東、「ローカル光入力技術を用いた心線対照器の入力部における基本検討」一般社団法人電子情報通信学会、信学技法Shinbo, Iwata, Honda, Kawano, Manabe, Higashi, “Basic study on the input part of the core contrast device using local optical input technology”, The Institute of Electronics, Information and Communication Engineers, Science Technique 廣田、川野、真保、納戸、本田、真鍋、「側方光入出力技術を用いた心線対照送信部の検討」一般社団法人電子情報通信学会、信学技法Iwata, Kawano, Shinho, Nado, Honda, Manabe, "Study of a contrasting transmission section using side light input / output technology", The Institute of Electronics, Information and Communication Engineers, Science Technique

前記した屈折率整合部材は、液体またはジェル状である。よって、側方入出力技術が使用される度に、屈折率整合部材は消耗する。また屈折率整合部材は、時間の経過によって、劣化し、定着しなくなる虞が生じる。
このため、屈折率整合部材は、適宜補充される必要が生じる。よって、屈折率整合部材のコストがかかり、補充の手間と時間とがかかる。
また屈折率整合部材が配設されないと、ファイバ同士が容易に光学的に結合しない虞が生じる。
このように、低コストで容易にファイバ同士を光学的に結合できることが求められている。
The above-described refractive index matching member is in a liquid or gel form. Therefore, each time the side input / output technology is used, the refractive index matching member is consumed. Further, the refractive index matching member may deteriorate with time and may not be fixed.
For this reason, the refractive index matching member needs to be appropriately supplemented. Therefore, the cost of the refractive index matching member is increased, and replenishment labor and time are required.
Further, if the refractive index matching member is not provided, there is a possibility that the fibers are not easily optically coupled to each other.
Thus, it is required that fibers can be easily optically coupled at low cost.

本発明は、これらの事情に鑑みてなされたものであり、低コストで容易にファイバ同士を光学的に結合できる光ファイバ側方入出力装置と光ファイバ側方入出力方法とを提供することを目的とする。   The present invention has been made in view of these circumstances, and provides an optical fiber side input / output device and an optical fiber side input / output method capable of easily optically coupling fibers at low cost. Objective.

本発明は目的を達成するために、光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力装置であって、直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部が載置される曲面部と、前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部が突き当たり、突き当りによって前記曲面部と共に前記中途部に曲げ部を形成し、突き当りによって前記曲面部と共に前記中途部を挟み込んで前記曲面部と共に前記中途部を固定する固定部材と、前記光ファイバに対して前記光信号を入出力するプローブファイバと、を具備し、前記プローブファイバは、前記プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように、前記固定部材によって保持され、前記曲面部は、前記中途部が載置される曲面側溝部を有し、前記固定部材は、前記曲面部が前記固定部材に突き当たる際、前記曲面側溝部に載置されている前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定する固定部を有し、前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部は前記曲面側溝部に収容され、前記固定部は、前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定し、固定時に固定のために前記曲面側溝部に収容される平面状の固定面部と、前記固定面部が前記曲面側溝部に収容されるために前記固定面部の周囲を前記固定面部に対して窪ませ、窪ませるために前記固定面部に対して傾斜している固定側傾斜面部と、を有し、前記曲面部は、円筒部の周面の一部に対して凸設されている凸部として形成され、前記曲面側溝部は、前記凸部に配設され、前記曲面部は、前記曲面側溝部の両脇部に配設され、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設されている曲面側凸部をさらに有し、前記曲面側溝部の曲面側傾斜面部は、前記曲面側凸部の側面を兼ね、前記固定面部は、前記固定部材の一端面の一部として機能し、前記固定部は、前記固定面部の両脇部に配設され、前記固定面部と前記固定部材の前記一端面とに対して凹設されている固定側溝部をさらに有し、前記固定側溝部は、前記固定側溝部の内面の一部として機能する前記固定側傾斜面部を有し、前記曲面部が前記一端面に向かって移動し、前記固定面部と前記曲面側溝部とが前記中途部を挟み込む際、前記固定面部が前記曲面側溝部に収容されると同時に、前記曲面側傾斜面部の少なくとも一部が前記固定側傾斜面部に当接し前記固定側傾斜面部を摺動するように、前記曲面側凸部の少なくとも一部は前記固定側溝部に収容されること特徴とする光ファイバ側方入出力装置を提供する。
また本発明は目的を達成するために、光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力装置であって、直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部が載置される曲面部と、前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部が突き当たり、突き当りによって前記曲面部と共に前記中途部に曲げ部を形成し、突き当りによって前記曲面部と共に前記中途部を挟み込んで前記曲面部と共に前記中途部を固定する固定部材と、前記光ファイバに対して前記光信号を入出力するプローブファイバと、を具備し、前記プローブファイバは、前記プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように、前記固定部材によって保持され、前記曲面部は、前記中途部が載置される曲面側溝部を有し、前記固定部材は、前記曲面部が前記固定部材に突き当たる際、前記曲面側溝部に載置されている前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定する固定部を有し、前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部は前記曲面側溝部に収容され、前記固定部は、前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定し、固定時に固定のために前記曲面側溝部に収容される平面状の固定面部と、前記固定面部が前記曲面側溝部に収容されるために前記固定面部の周囲を前記固定面部に対して窪ませ、窪ませるために前記固定面部に対して傾斜している固定側傾斜面部と、を有し、前記曲面部は、円筒部の周面の一部に対して凸設されている凸部として形成され、前記曲面側溝部は、前記凸部に配設され、前記曲面部は、前記曲面側溝部の両脇部に配設され、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設されている曲面側凸部をさらに有し、前記曲面側溝部の曲面側傾斜面部は、前記曲面側凸部の側面を兼ね、前記固定部は、前記固定部材の一端面に対して凸設されており、台形形状を有し、前記固定面部は、台形の上面として機能し、研磨されており、前記固定側傾斜面部は、台形の側面として機能し、前記固定部が前記曲面側溝部に収容された際、前記固定側傾斜面部の少なくとも一部は、前記曲面側溝部の曲面側傾斜面部に当接することを特徴とする光ファイバ側方入出力装置を提供する。
In order to achieve the object, the present invention provides an optical fiber side input / output device for inputting / outputting an optical signal to / from the optical fiber from the side of the optical fiber, wherein a bent portion is provided in the middle portion of the linear optical fiber. A curved surface portion on which the midway portion is placed to form, and the curved surface portion including the midway portion so as to sandwich the midway portion together with the curved surface portion, and a bent portion with the curved surface portion and the midway portion due to abutment A fixing member that sandwiches the midway part together with the curved surface part by abutment and fixes the midway part together with the curved surface part, and a probe fiber that inputs and outputs the optical signal to and from the optical fiber. the probe fiber is such that the optical signal output from the probe fiber is input to the optical fiber from the side of the optical fiber, the fixed Held by wood, the curved surface portion has a curved groove portion into which the intermediate portion is mounted, the fixing member, when the curved portion abuts the fixed member, is placed on the curved groove portion The middle part is abutted and has a fixing part that sandwiches and fixes the middle part together with the curved side groove part by the abutting, and the curved part and the fixing member are positioned relative to each other when the middle part abuts the fixing part. is, as with the probe fiber and the optical fiber is optically coupled to one another by the positioning, at least a portion of the fixed portion is received in the curved groove portion, the fixed portion, the intermediate portion abuts, abutment The intermediate portion is sandwiched and fixed together with the curved side groove portion by the flat fixed surface portion received in the curved side groove portion for fixing at the time of fixing, The fixed surface portion is recessed in the curved surface side groove portion so that the periphery of the fixed surface portion is recessed with respect to the fixed surface portion, and the fixed side inclined surface portion is inclined with respect to the fixed surface portion in order to be recessed. The curved surface portion is formed as a convex portion projecting from a part of the circumferential surface of the cylindrical portion, the curved groove portion is disposed on the convex portion, and the curved surface portion is the curved surface A curved-surface-side convex portion that is disposed on both sides of the side-groove portion and is convex with respect to the bottom of the curved-surface-side groove portion and the peripheral surface of the cylindrical portion; The surface portion also serves as a side surface of the convex portion on the curved surface side, the fixed surface portion functions as a part of one end surface of the fixing member, and the fixing portions are disposed on both sides of the fixing surface portion, and the fixing A fixed-side groove portion that is recessed with respect to the surface portion and the one end surface of the fixing member; The groove portion has the fixed-side inclined surface portion functioning as a part of the inner surface of the fixed-side groove portion, the curved surface portion moves toward the one end surface, and the fixed surface portion and the curved-surface side groove portion are the midway portions. The fixed surface portion is accommodated in the curved-surface-side groove portion, and at least a part of the curved-surface-side inclined surface portion abuts on the fixed-side inclined surface portion and slides on the fixed-side inclined surface portion. An optical fiber side input / output device is provided in which at least a part of a curved-surface-side convex portion is accommodated in the fixed-side groove .
In order to achieve the object, the present invention provides an optical fiber side input / output device for inputting / outputting an optical signal to / from the optical fiber from the side of the optical fiber. A curved surface portion on which the midway portion is placed, and the curved surface portion including the midway portion so as to sandwich the midway portion together with the curved surface portion, and bends to the midway portion together with the curved surface portion by abutment A fixing member that fixes the intermediate portion together with the curved surface portion by sandwiching the intermediate portion together with the curved surface portion by abutting, and a probe fiber that inputs and outputs the optical signal to and from the optical fiber. The probe fiber is configured so that the optical signal input / output from the probe fiber is input / output to / from the optical fiber from the side of the optical fiber. The curved surface portion is held by a fixed member, and the curved surface portion has a curved side groove portion on which the midway portion is placed, and the fixing member is placed on the curved surface side groove portion when the curved surface portion abuts against the fixing member. The middle part is abutted, and has a fixing part that sandwiches and fixes the middle part together with the curved side groove part by the abutting, and when the middle part abuts the fixing part, the curved part and the fixing member are mutually So that the optical fiber and the probe fiber are optically coupled to each other by positioning, at least a part of the fixing portion is accommodated in the curved side groove portion, and the fixing portion abuts the midway portion, A flat fixed surface portion that is sandwiched and fixed together with the curved surface side groove portion by abutment, and is accommodated in the curved surface side groove portion for fixing at the time of fixing, Since the fixed surface portion is accommodated in the curved surface side groove portion, the periphery of the fixed surface portion is recessed with respect to the fixed surface portion, and the fixed side inclined surface portion that is inclined with respect to the fixed surface portion in order to be recessed, The curved surface portion is formed as a convex portion projecting from a part of the peripheral surface of the cylindrical portion, the curved side groove portion is disposed on the convex portion, and the curved surface portion is A curved-surface-side convex portion that is provided on both sides of the curved-surface-side groove portion, and that protrudes from the bottom of the curved-surface-side groove portion and the peripheral surface of the cylindrical portion; The inclined surface portion also serves as a side surface of the curved-surface-side convex portion, the fixed portion protrudes from one end surface of the fixing member, has a trapezoidal shape, and the fixed surface portion functions as an upper surface of the trapezoid The fixed inclined surface portion functions as a trapezoidal side surface, and the fixed portion is bent. Provided is an optical fiber side input / output device in which at least a part of the fixed-side inclined surface portion comes into contact with the curved-surface-side inclined surface portion of the curved-surface-side groove when housed in the surface-side groove portion.

また本発明は目的を達成するために、光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力方法であって、曲面部に、直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部を載置し、固定部材が前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部を前記固定部材に突き当て、突き当りによって前記固定部材と前記曲面部とによって前記中途部に曲げ部を形成し、突き当りによって前記固定部材と前記曲面部とによって前記中途部を挟み込んで前記中途部を固定し、前記光ファイバに対して前記光信号を入出力し、プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように前記固定部材に前記プローブファイバを保持させ、前記中途部を前記曲面部の曲面側溝部に載置し、前記曲面部が前記固定部材に突き当たる際、前記固定部材の固定部に前記曲面側溝部に配設されている前記中途部を突き当て、突き当りによって前記曲面側溝部と前記固定部とによって前記中途部を挟み込んで固定し、前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部を前記曲面側溝部に収容し、前記固定部の平面状の固定面部に前記中途部を突き当て、突き当てによって前記固定面部と前記曲面側溝部とで前記中途部を挟み込んで固定し、固定時に固定のために前記固定面部を前記曲面側溝部に収容し、前記固定面部を前記曲面側溝部に収容するために前記固定面部の周囲を前記固定面部に対して傾斜している固定側傾斜面部によって窪ませ、前記曲面部を、円筒部の周面の一部に対して凸設されている凸部として形成し、前記曲面側溝部を、前記凸部に配設し、前記曲面部の曲面側凸部を、前記曲面側溝部の両脇部に配設し、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設させ、前記曲面側溝部の曲面側傾斜面部を、前記曲面側凸部の側面を兼ねさせ、前記固定面部を、前記固定部材の一端面の一部として機能させ、前記固定部の固定側溝部を、前記固定面部の両脇部に配設し、前記固定面部と前記固定部材の前記一端面とに対して凹設させ、前記固定側溝部の前記固定側傾斜面部を、前記固定側溝部の内面の一部として機能させ、前記曲面部を前記一端面に向かって移動させ、前記固定面部と前記曲面側溝部とによって前記中途部を挟み込む際、前記固定面部を前記曲面側溝部に収容すると同時に、前記曲面側傾斜面部の少なくとも一部が前記固定側傾斜面部に当接し前記固定側傾斜面部を摺動するように、前記曲面側凸部の少なくとも一部を前記固定側溝部に収容することを特徴とする光ファイバ側方入出力方法を提供する。
また本発明は目的を達成するために、光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力方法であって、曲面部に、直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部を載置し、固定部材が前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部を前記固定部材に突き当て、突き当りによって前記固定部材と前記曲面部とによって前記中途部に曲げ部を形成し、突き当りによって前記固定部材と前記曲面部とによって前記中途部を挟み込んで前記中途部を固定し、前記光ファイバに対して前記光信号を入出力し、プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように前記固定部材に前記プローブファイバを保持させ、前記中途部を前記曲面部の曲面側溝部に載置し、前記曲面部が前記固定部材に突き当たる際、前記固定部材の固定部に前記曲面側溝部に配設されている前記中途部を突き当て、突き当りによって前記曲面側溝部と前記固定部とによって前記中途部を挟み込んで固定し、前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部を前記曲面側溝部に収容し、前記固定部の平面状の固定面部に前記中途部を突き当て、突き当てによって前記固定面部と前記曲面側溝部とで前記中途部を挟み込んで固定し、固定時に固定のために前記固定面部を前記曲面側溝部に収容し、前記固定面部を前記曲面側溝部に収容するために前記固定面部の周囲を前記固定面部に対して傾斜している固定側傾斜面部によって窪ませ、前記曲面部を、円筒部の周面の一部に対して凸設されている凸部として形成し、前記曲面側溝部を、前記凸部に配設し、前記曲面部の曲面側凸部は、前記曲面側溝部の両脇部に配設し、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設させ、前記曲面側溝部の曲面側傾斜面部を、前記曲面側凸部の側面を兼ねさせ、台形形状の前記固定部を、前記固定部材の一端面に対して凸設させ、前記固定面部を、台形の上面として機能させ、研磨し、前記固定側傾斜面部を、台形の側面として機能させ、前記固定部を前記曲面側溝部に収容する際、前記固定側傾斜面部の少なくとも一部を、前記曲面側溝部の曲面側傾斜面部に当接させることを特徴とする光ファイバ側方入出力方法を提供する。
In order to achieve the object, the present invention provides an optical fiber side input / output method for inputting / outputting an optical signal to / from the optical fiber from the side of the optical fiber. The intermediate part is placed to form a bent part in the part, and the curved part including the intermediate part is abutted against the fixing member so that the fixing member sandwiches the intermediate part together with the curved part. A bent portion is formed in the midway portion by the fixing member and the curved surface portion, and the midway portion is sandwiched between the fixing member and the curved surface portion by abutment to fix the midway portion, and the light is applied to the optical fiber. input and output signals, the probe fiber to the fixed member so that the optical signal output from the probe fiber is input to the optical fiber from the side of the optical fiber The midway portion is disposed in the curved surface side groove portion on the fixed portion of the fixing member when the midway portion is placed on the curved surface side groove portion of the curved surface portion and the curved surface portion abuts against the fixed member. The curved surface side groove portion and the fixing portion sandwich and fix the midway portion by abutment, and when the midway portion hits the fixing portion, the curved surface portion and the fixing member are positioned relative to each other. as with the probe fiber and the optical fiber is optically coupled to each other by, at least a portion of said holding part is housed in the curved groove portion, abutting the intermediate portion to the flat fixing surface of the fixing part The intermediate surface portion is sandwiched and fixed between the fixed surface portion and the curved surface side groove portion by abutting and abutting, and the fixed surface portion is accommodated in the curved surface side groove portion for fixing at the time of fixing, In order to accommodate the fixed surface portion in the curved surface side groove portion, the periphery of the fixed surface portion is depressed by a fixed inclined surface portion inclined with respect to the fixed surface portion, and the curved surface portion is made a part of the peripheral surface of the cylindrical portion. It is formed as a convex portion that is convex with respect to the curved surface side groove portion, and the curved surface side convex portion of the curved surface portion is disposed on both sides of the curved surface side groove portion, The curved surface side groove portion is protruded from the bottom of the curved surface side groove portion and the peripheral surface of the cylindrical portion, the curved surface side inclined surface portion of the curved surface side groove portion is also used as the side surface of the curved surface side convex portion, and the fixed surface portion is fixed. It functions as a part of one end surface of the member, the fixed side groove portions of the fixing portion are disposed on both sides of the fixing surface portion, and are recessed with respect to the fixing surface portion and the one end surface of the fixing member. The fixed-side inclined surface portion of the fixed-side groove portion functions as a part of the inner surface of the fixed-side groove portion, When the curved surface portion is moved toward the one end surface, and the intermediate portion is sandwiched between the fixed surface portion and the curved surface side groove portion, the fixed surface portion is accommodated in the curved surface side groove portion and at least one of the curved surface side inclined surface portion. The optical fiber side input / output is characterized in that at least a part of the curved-surface-side convex portion is accommodated in the fixed-side groove portion so that the portion abuts on the fixed-side inclined surface portion and slides on the fixed-side inclined surface portion. Provide a method.
In order to achieve the object, the present invention provides an optical fiber side input / output method for inputting / outputting an optical signal to / from the optical fiber from the side of the optical fiber. The intermediate part is placed to form a bent part in the part, and the curved part including the intermediate part is abutted against the fixing member so that the fixing member sandwiches the intermediate part together with the curved part. A bent portion is formed in the midway portion by the fixing member and the curved surface portion, and the midway portion is sandwiched between the fixing member and the curved surface portion by abutment to fix the midway portion, and the light is applied to the optical fiber. The probe fiber is connected to the fixing member so that the optical signal inputted and outputted from the probe fiber is inputted and outputted to the optical fiber from the side of the optical fiber. The midway portion is disposed in the curved surface side groove portion on the fixed portion of the fixing member when the midway portion is placed on the curved surface side groove portion of the curved surface portion and the curved surface portion abuts against the fixed member. The curved surface side groove portion and the fixing portion sandwich and fix the midway portion by abutment, and when the midway portion hits the fixing portion, the curved surface portion and the fixing member are positioned relative to each other. So that the optical fiber and the probe fiber are optically coupled to each other so that at least a part of the fixing portion is accommodated in the curved side groove portion, and the intermediate portion projects into the flat fixing surface portion of the fixing portion. The intermediate surface portion is sandwiched and fixed between the fixed surface portion and the curved surface side groove portion by abutting and abutting, and the fixed surface portion is accommodated in the curved surface side groove portion for fixing at the time of fixing, In order to accommodate the fixed surface portion in the curved surface side groove portion, the periphery of the fixed surface portion is depressed by a fixed inclined surface portion inclined with respect to the fixed surface portion, and the curved surface portion is made a part of the peripheral surface of the cylindrical portion. It is formed as a convex portion that is convex to the curved surface side groove portion, and the curved surface side convex portion of the curved surface portion is disposed on both sides of the curved surface side groove portion, The curved side groove portion is protruded from the bottom of the curved surface side groove portion and the peripheral surface of the cylindrical portion, the curved surface side inclined surface portion of the curved surface side groove portion is also used as the side surface of the curved surface side convex portion, and the trapezoidal fixing portion is provided. , Projecting from one end surface of the fixing member, allowing the fixing surface portion to function as a trapezoidal upper surface, polishing, causing the fixed inclined surface portion to function as a side surface of the trapezoid, and fixing the fixing portion to the curved side groove At the time of accommodating in the part, at least a part of the fixed-side inclined surface part is bent by the curved side groove part. An optical fiber side input / output method is provided, wherein the optical fiber side input / output method is brought into contact with a surface side inclined surface portion.

本発明によれば、低コストで容易にファイバ同士を光学的に結合できる光ファイバ側方入出力装置と光ファイバ側方入出力方法とを提供することができる。   According to the present invention, it is possible to provide an optical fiber side input / output device and an optical fiber side input / output method that can easily optically couple fibers at low cost.

図1Aは、本発明の第1の実施形態に係る光ファイバ側方入出力装置の概略図である。FIG. 1A is a schematic diagram of an optical fiber side input / output device according to the first embodiment of the present invention. 図1Bは、曲面部を示す図であり、(A)は曲面部の側面図であり、(B)は曲面部の斜視図である。FIG. 1B is a diagram illustrating a curved surface portion, (A) is a side view of the curved surface portion, and (B) is a perspective view of the curved surface portion. 図1Cは、固定部を示す図である。FIG. 1C is a diagram illustrating the fixing unit. 図1Dは、曲面部のサイズと固定部のサイズとの関係を示す図である。FIG. 1D is a diagram illustrating a relationship between the size of the curved surface portion and the size of the fixed portion. 図1Eは、光ファイバが曲面側溝部と固定面部とによって挟み込まれて固定されプローブファイバと光学的に結合している状態を示す図である。FIG. 1E is a diagram illustrating a state in which the optical fiber is sandwiched and fixed between the curved groove portion and the fixed surface portion and optically coupled to the probe fiber. 図1Fは、本実施形態とは異なり、溝部が固定部材に配設され、固定部のような凸部が曲面部に配設されている状態を示す図である。FIG. 1F is a diagram showing a state in which the groove portion is disposed on the fixing member and the convex portion such as the fixing portion is disposed on the curved surface portion, unlike the present embodiment. 図1Gは、本実施形態とは異なり、固定部が配設されず、V字形状の曲面側溝部のみが配設されている状態の一例を示す図である。FIG. 1G is a diagram illustrating an example of a state in which only a V-shaped curved groove portion is provided, not a fixed portion, unlike the present embodiment. 図1Hは、本実施形態とは異なり、固定部が配設されず、V字形状の曲面側溝部のみが配設されている状態の一例を示す図である。FIG. 1H is a diagram illustrating an example of a state in which only a V-shaped curved groove portion is provided, not a fixed portion, unlike the present embodiment. 図2Aは、第2の実施形態の曲面部を示す図であり、(A)は曲面部の側面図であり、(B)は曲面部の斜視図である。FIG. 2A is a diagram illustrating a curved surface portion of the second embodiment, (A) is a side view of the curved surface portion, and (B) is a perspective view of the curved surface portion. 図2Bは、第2の実施形態の固定部を示す図である。FIG. 2B is a diagram illustrating a fixing unit according to the second embodiment. 図2Cは、光ファイバが第2の実施形態における曲面側溝部と固定面部とによって挟み込まれて固定されプローブファイバと光学的に結合している状態を示す図である。FIG. 2C is a diagram illustrating a state in which the optical fiber is sandwiched and fixed between the curved groove portion and the fixed surface portion in the second embodiment and optically coupled to the probe fiber. 図3は、光ファイバが第3の実施形態における曲面側溝部と固定面部とによって挟み込まれて固定されプローブファイバと光学的に結合している状態を示す図である。FIG. 3 is a diagram illustrating a state in which the optical fiber is sandwiched and fixed between the curved groove portion and the fixed surface portion in the third embodiment and optically coupled to the probe fiber. 図4は、第4の実施形態における円弧部を示す図である。FIG. 4 is a diagram illustrating an arc portion in the fourth embodiment. 図5は、第5の実施形態における固定面部を示す図である。FIG. 5 is a diagram illustrating a fixed surface portion in the fifth embodiment. 図6は、一般的な側方入出力技術を説明するための図である。FIG. 6 is a diagram for explaining a general side input / output technique.

以下、図面を参照して本発明の実施形態について詳細に説明する。なお例えば図1Dにおいて、プローブファイバ50の図示を省略するように、一部の図面では図示の明瞭化のために部材の一部の図示を省略している。
[第1の実施形態]
[構成]
図1Aと図1Bと図1Cと図1Dと図1Eと図1Fと図1Gと図1Hとを参照して第1の実施形態について説明する。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For example, in FIG. 1D, the illustration of the probe fiber 50 is omitted, and in some drawings, a part of the member is omitted for clarity of illustration.
[First Embodiment]
[Constitution]
The first embodiment will be described with reference to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H.

[光ファイバ側方入出力装置]
図1Aに示すような光ファイバ側方入出力装置(以下、入出力装置10)は、光ファイバ20の側方から光信号を光ファイバ20に入出力する。
[Optical fiber side input / output device]
An optical fiber side input / output device (hereinafter referred to as an input / output device 10) as shown in FIG. 1A inputs and outputs optical signals to and from the optical fiber 20 from the side of the optical fiber 20.

[入出力装置10の構成]
図1Aに示すように、入出力装置10は、直線状の光ファイバ20の一部である中途部21に曲げ部23を形成するために中途部21が載置される曲面部30と、曲面部30と共に中途部21を挟み込むように中途部21を含む曲面部30が突き当たり、突き当りによって曲面部30と共に中途部21に曲げ部23を形成し、突き当りによって曲面部30と共に中途部21を挟み込んで曲面部30と共に中途部21を固定する固定部材40とを有している。また入出力装置10は、光ファイバ20に対して光信号を入出力し、プローブファイバ50から入出力される光信号が光ファイバ20の側方から光ファイバ20に入出力されるように固定部材40によって保持されるプローブファイバ50をさらに有している。
[Configuration of Input / Output Device 10]
As shown in FIG. 1A, the input / output device 10 includes a curved surface portion 30 on which the midway portion 21 is placed in order to form a bent portion 23 in the midway portion 21 that is a part of the linear optical fiber 20, and a curved surface The curved surface portion 30 including the midway portion 21 hits the middle portion 21 together with the portion 30, the bent portion 23 is formed in the midway portion 21 together with the curved surface portion 30 by hitting, and the midway portion 21 is put together with the curved surface portion 30 by hitting. It has the fixed member 40 which fixes the midway part 21 with the curved surface part 30. FIG. The input / output device 10 inputs / outputs an optical signal to / from the optical fiber 20 and a fixing member so that the optical signal input / output from the probe fiber 50 is input / output to / from the optical fiber 20 from the side of the optical fiber 20. It further has a probe fiber 50 held by 40.

[曲面部30]
図1Aと図1Bと図1Dとに示すように、曲面部30は、例えば、円筒部30aの周面の一部に配設されている。曲面部30は、この一部と一体である。図1Bと図1Dと図1Eとに示すように、曲面部30は、中途部21が載置される曲面側溝部31を有している。曲面側溝部31は、前記した周面の一部が凹設されることによって、形成される。このため、図1Dに示すように、曲面部30は、円筒部30aの周面と同一平面上に配設される曲面側開口部33を有することとなる。
[Curved surface portion 30]
As shown in FIGS. 1A, 1B, and 1D, the curved surface portion 30 is disposed, for example, on a part of the circumferential surface of the cylindrical portion 30a. The curved surface part 30 is integral with this part. As shown in FIGS. 1B, 1D, and 1E, the curved surface portion 30 has a curved groove portion 31 on which the midway portion 21 is placed. The curved side groove portion 31 is formed by recessing a part of the peripheral surface described above. For this reason, as shown to FIG. 1D, the curved surface part 30 will have the curved surface side opening part 33 arrange | positioned on the same plane as the surrounding surface of the cylindrical part 30a.

また図1Bと図1Dとに示すように、曲面側溝部31は、円筒部30aの周面の一部に配設され、円筒部30aの周方向に沿って配設される。このため曲面側溝部31は、曲面側溝部31の軸方向において、円筒部30aの周方向に沿って円弧を描くように形成される。
曲面側溝部31の曲がり具合と、円筒部30aの曲がり具合とは、曲げ部23の曲がり具合に対応する。これらの曲がり具合は、互いに同一である。またこれらの曲率は、互いに同一であり、例えば一定である。
Moreover, as shown in FIG. 1B and FIG. 1D, the curved surface side groove part 31 is arrange | positioned in a part of peripheral surface of the cylindrical part 30a, and is arrange | positioned along the circumferential direction of the cylindrical part 30a. For this reason, the curved surface side groove portion 31 is formed so as to draw an arc along the circumferential direction of the cylindrical portion 30 a in the axial direction of the curved surface side groove portion 31.
The degree of bending of the curved side groove portion 31 and the degree of bending of the cylindrical portion 30 a correspond to the degree of bending of the bending portion 23. These bends are the same as each other. These curvatures are the same as each other, for example, constant.

本実施形態では、図1Aと図1Eとに示すように、曲面側溝部31は、中途部21を後述する固定部材40の固定面部41aに向かって押し付け、固定面部41aからの反発によって例えば中途部21を曲面側溝部31の曲がり具合に沿わせ、中途部21を曲面側溝部31の曲がり具合に倣わせる。そして、曲面側溝部31は、固定面部41aと共に中途部21を挟み込んで固定する。   In this embodiment, as shown in FIG. 1A and FIG. 1E, the curved surface side groove portion 31 presses the midway portion 21 toward a fixed surface portion 41a of a fixing member 40 to be described later, and rebounds from the fixed surface portion 41a. 21 is made to follow the bending state of the curved surface side groove portion 31, and the midway portion 21 is made to follow the bending state of the curved surface side groove portion 31. And the curved surface side groove part 31 pinches | interposes and fixes the midway part 21 with the fixed surface part 41a.

図1Aと図1Dと図1Eとに示すように、曲面側溝部31が後述する固定面部41aと対向するように、曲面部30は固定部材40の一端面40aに対向している。   As shown in FIGS. 1A, 1D, and 1E, the curved surface portion 30 faces the one end surface 40a of the fixing member 40 so that the curved surface side groove portion 31 faces a fixing surface portion 41a described later.

図1Dに示すように、曲面側溝部31は、曲面側溝部31の幅方向において左右対称となる形状、例えばV字形状を有している。このような曲面側溝部31は、曲面側溝部31の内面として機能する2つの曲面側傾斜面部31aを有している。曲面側傾斜面部31aの一端部は曲面部30の周面と連接しており、曲面側傾斜面部31aの他端部は他方の曲面側傾斜面部31aの他端部と連接している。   As illustrated in FIG. 1D, the curved-surface-side groove portion 31 has a shape that is symmetric in the width direction of the curved-surface-side groove portion 31, for example, a V shape. Such a curved surface side groove portion 31 has two curved surface side inclined surface portions 31 a that function as inner surfaces of the curved surface side groove portion 31. One end portion of the curved surface side inclined surface portion 31a is connected to the peripheral surface of the curved surface portion 30, and the other end portion of the curved surface side inclined surface portion 31a is connected to the other end portion of the other curved surface side inclined surface portion 31a.

図1Eに示すように、中途部21が曲面側溝部31に載置された際、曲面側傾斜面部31aは中途部21の周面の一部に当接する。このような曲面側溝部31を有する曲面部30は、中途部21が載置される載置部材として形成される。また曲面側溝部31を有する曲面部30は、曲げ部23を形成し、固定面部41aと共に中途部21を固定するために、後述する固定面部41aに中途部21を突き当てる突き当て部として機能する。   As shown in FIG. 1E, when the midway portion 21 is placed in the curved surface side groove portion 31, the curved surface side inclined surface portion 31 a comes into contact with a part of the circumferential surface of the midway portion 21. The curved surface portion 30 having the curved surface side groove portion 31 is formed as a mounting member on which the midway portion 21 is mounted. Further, the curved surface portion 30 having the curved surface side groove portion 31 functions as an abutting portion that abuts the midway portion 21 against the fixed surface portion 41a described later in order to form the bent portion 23 and fix the midway portion 21 together with the fixed surface portion 41a. .

[固定部材40]
[固定部材40の形状]
図1Aに示すように、固定部材40は、固定部材40の一端面40aが固定部材40の中心軸に対して傾斜して配設され、一端面40aが楕円形状の傾斜面として形成され、固定部材40の他端面40bが中心軸に対して直交して配設され、他端面40bが円形状に形成されるような、柱形状を有している。一端面40aと他端面40bとは、平面である。
つまり固定部材40は、例えば円柱部材が円柱部材の中心軸に対して傾斜する方向に円柱部材の一部を切り掛かれることによって、形成される。
[Fixing member 40]
[Shape of fixing member 40]
As shown in FIG. 1A, the fixing member 40 is arranged such that one end surface 40a of the fixing member 40 is inclined with respect to the central axis of the fixing member 40, and the one end surface 40a is formed as an elliptical inclined surface. The member 40 has a column shape such that the other end surface 40b of the member 40 is disposed perpendicular to the central axis and the other end surface 40b is formed in a circular shape. The one end surface 40a and the other end surface 40b are flat surfaces.
That is, the fixing member 40 is formed by, for example, cutting a part of the cylindrical member in a direction in which the cylindrical member is inclined with respect to the central axis of the cylindrical member.

[固定部材40の構成]
図1Aと図1Cと図1Dと図1Eとに示すように、固定部材40は、一端面40aの一部に配設されている固定部41を有している。固定部41は、曲面部30が一端面40aの一部に突き当たる際、曲面側溝部31に載置されている中途部21が突き当たり、突き当りによって曲面側溝部31の曲面側傾斜面部31aと共に中途部21を挟み込んで固定する。
図1Aと図1Eとに示すように、曲面側溝部31における中途部21を含む曲面側傾斜面部31aが固定部41に突き当たる際、曲面部30と固定部材40とが互いに位置決めされ、この位置決めによって光ファイバ20とプローブファイバ50とが互いに光学的に結合するように、固定部41の少なくとも一部は曲面側溝部31に収容される。
[Configuration of Fixing Member 40]
As shown in FIG. 1A, FIG. 1C, FIG. 1D, and FIG. 1E, the fixing member 40 has the fixing | fixed part 41 arrange | positioned in a part of one end surface 40a. When the curved surface portion 30 abuts a part of the one end surface 40a, the fixed portion 41 abuts the midway portion 21 placed on the curved surface side groove portion 31, and the midway portion together with the curved surface side inclined surface portion 31a of the curved surface side groove portion 31 by the abutment. 21 is inserted and fixed.
As shown in FIG. 1A and FIG. 1E, when the curved surface side inclined surface portion 31a including the midway portion 21 in the curved surface side groove portion 31 abuts against the fixing portion 41, the curved surface portion 30 and the fixing member 40 are positioned relative to each other. At least a part of the fixing portion 41 is accommodated in the curved side groove portion 31 so that the optical fiber 20 and the probe fiber 50 are optically coupled to each other.

図1Aと図1Cとに示すように、固定部41は、一端面40aと一体である。固定部41は、固定部41の中心軸が楕円である一端面40aの長軸軸上に配設されるように、配設されている。また、固定部41は、楕円の一端面40aの一端から他端まで連続して配設されている。   As shown in FIGS. 1A and 1C, the fixing portion 41 is integral with the one end face 40a. The fixed portion 41 is disposed so as to be disposed on the long axis of the one end surface 40a in which the central axis of the fixed portion 41 is an ellipse. Moreover, the fixing | fixed part 41 is continuously arrange | positioned from the one end of the elliptical one end surface 40a to the other end.

図1Aと図1Cと図1Dと図1Eとに示すように、固定部41は、曲面側溝部31に載置されている中途部21が突き当たり、突き当りによって曲面側傾斜面部31aと共に中途部21を挟み込んで固定し、固定時に固定のために曲面側溝部31に収容される平面状の固定面部41aと、例えば楕円の長軸に沿って連続して、固定面部41aの縁部と連接しており、固定面部41aが曲面側溝部31に収容されるために固定面部41aの周囲を固定面部41aに対して窪ませ、窪ませるために固定面部41aに対して傾斜している固定側傾斜面部41bとを有している。   As shown in FIG. 1A, FIG. 1C, FIG. 1D, and FIG. 1E, the fixed portion 41 hits the midway portion 21 placed in the curved surface side groove portion 31, and the midway portion 21 together with the curved surface side inclined surface portion 31a by the abutment. It is sandwiched and fixed, and is connected to the edge of the fixed surface portion 41a continuously with the flat fixed surface portion 41a accommodated in the curved side groove portion 31 for fixing at the time of fixing, for example, along the major axis of the ellipse. The fixed surface portion 41a is accommodated in the curved surface side groove portion 31, so that the periphery of the fixed surface portion 41a is recessed with respect to the fixed surface portion 41a, and the fixed side inclined surface portion 41b is inclined with respect to the fixed surface portion 41a in order to be recessed. have.

図1Dと図1Eとに示すように、本実施形態では、固定部41が一端面40aに対して凸設され、固定部41が固定部41の幅方向において左右対称となる形状例えば台形形状を有するように、固定面部41aは、一端面40aよりも曲面部30側に配設されている。このため、固定側傾斜面部41bは、固定面部41aから一端面40aに向かって広がるように、固定面部41aと一端面40aとに対して傾斜している。つまり台形形状の固定部41は、中途部21を前記したように固定する台形の上面として機能する固定面部41aと、固定面部41aの両端に配設され、台形の側面として機能する固定側傾斜面部41bとを有することとなる。
そして本実施形態では、固定面部41aに対して窪んでいる固定面部41aの周囲とは、固定面部41aを除く一端面40aを示すこととなる。
As shown in FIG. 1D and FIG. 1E, in this embodiment, the fixing portion 41 is protruded with respect to the one end surface 40a, and the fixing portion 41 has a symmetrical shape in the width direction of the fixing portion 41, for example, a trapezoidal shape. As shown, the fixed surface portion 41a is disposed closer to the curved surface portion 30 than the one end surface 40a. For this reason, the fixed-side inclined surface portion 41b is inclined with respect to the fixed surface portion 41a and the one end surface 40a so as to spread from the fixed surface portion 41a toward the one end surface 40a. That is, the trapezoidal fixing portion 41 includes a fixing surface portion 41a that functions as a trapezoidal upper surface that fixes the midway portion 21 as described above, and a fixed-side inclined surface portion that is disposed at both ends of the fixing surface portion 41a and functions as a trapezoidal side surface. 41b.
And in this embodiment, the circumference | surroundings of the fixed surface part 41a depressed with respect to the fixed surface part 41a will show the one end surface 40a except the fixed surface part 41a.

図1Eに示すように、固定面部41aは、曲面側溝部31と共に、光ファイバ20の軸方向に直交する方向から、言い換えると中途部21の側方から、中途部21を挟み込む挟み込み部として機能する。固定面部41aは、例えば、研磨されている。固定面部41aは、一端面40aよりも細い。固定面部41aは、直線状に配設されている。   As shown in FIG. 1E, the fixed surface portion 41 a functions as a sandwiching portion that sandwiches the midway portion 21 from the direction orthogonal to the axial direction of the optical fiber 20, in other words, from the side of the midway portion 21, together with the curved surface side groove portion 31. . The fixed surface portion 41a is polished, for example. The fixed surface portion 41a is thinner than the one end surface 40a. The fixed surface portion 41a is arranged in a straight line.

図1Aと図1Dと図1Eとに示すように、固定側傾斜面部41bは、例えば、平面である。固定側傾斜面部41bの一端は固定面部41aと連接しており、固定側傾斜面部41bの他端は一端面40aと連接している。   As shown in FIGS. 1A, 1D, and 1E, the fixed-side inclined surface portion 41b is, for example, a flat surface. One end of the fixed side inclined surface portion 41b is connected to the fixed surface portion 41a, and the other end of the fixed side inclined surface portion 41b is connected to the one end surface 40a.

なお図1Eに示すように、中途部21が固定面部41aに突き当たる際、固定部41の一部は、曲面側溝部31に収容される。詳細には、固定面部41aと固定側傾斜面部41bの一部とは、曲面側溝部31に収容される。固定側傾斜面部41bの一部とは、固定面部41aと連接している固定側傾斜面部41bの端部を示す。この場合、曲面側溝部31に収容される固定側傾斜面部41bは、曲面側溝部31の曲面側傾斜面部31aに当接する。なお固定側傾斜面部41b全体が曲面側傾斜面部31aに当接するように、固定部41全体が曲面側溝部31に収容されてもよい。   As shown in FIG. 1E, when the midway part 21 hits the fixed surface part 41 a, a part of the fixed part 41 is accommodated in the curved surface side groove part 31. Specifically, the fixed surface portion 41 a and a part of the fixed side inclined surface portion 41 b are accommodated in the curved surface side groove portion 31. The part of the fixed side inclined surface portion 41b indicates an end portion of the fixed side inclined surface portion 41b connected to the fixed surface portion 41a. In this case, the fixed-side inclined surface portion 41 b accommodated in the curved surface side groove portion 31 abuts on the curved surface side inclined surface portion 31 a of the curved surface side groove portion 31. In addition, the whole fixing | fixed part 41 may be accommodated in the curved surface side groove part 31 so that the whole fixing | fixed side inclined surface part 41b may contact | abut to the curved surface side inclined surface part 31a.

[曲面側溝部31のサイズと固定部41のサイズと関係・図1D]
曲面側溝部31の最大幅、言い換えると、曲面側開口部33の幅を、W1と称する。
固定面部41aの幅を、W2と称する。
光ファイバ20の直径を、図示はしないがDと称する。
曲面部30が固定部41に向かって移動し、固定面部41aと曲面側溝部31とが中途部21を挟み込む際、固定部41が曲面側溝部31に収容されるように、本実施形態では、D<W2<W1・・・式(1)が成り立つ。
[Relationship between the size of the curved side groove portion 31 and the size of the fixing portion 41, FIG. 1D]
The maximum width of the curved surface side groove portion 31, in other words, the width of the curved surface side opening portion 33 is referred to as W1.
The width of the fixed surface portion 41a is referred to as W2.
Although not shown, the diameter of the optical fiber 20 is referred to as D.
In the present embodiment, when the curved surface portion 30 moves toward the fixed portion 41 and the fixed surface portion 41a and the curved surface side groove portion 31 sandwich the midway portion 21, the fixed portion 41 is accommodated in the curved surface side groove portion 31. D <W2 <W1 Equation (1) is established.

また、曲面側溝部31の傾斜角度を、θ1と称する。
固定面部41aと固定側傾斜面部41bとの間に形成される傾斜角度を、θ2と称する。
曲面部30が固定部41に向かって移動し、固定面部41aと曲面側溝部31とが中途部21を挟み込む際、曲面側傾斜面部31aは、固定側傾斜面部41bに当接し、さらに固定側傾斜面部41bを摺動するように、本実施形態では、θ1=θ2・・・式(2)が成り立つ。
またこの場合、固定側傾斜面部41bを含む固定部41は、曲面側傾斜面部31aを含む曲面部30をガイドするガイド部として機能する。
In addition, the inclination angle of the curved groove portion 31 is referred to as θ1.
An inclination angle formed between the fixed surface portion 41a and the fixed-side inclined surface portion 41b is referred to as θ2.
When the curved surface portion 30 moves toward the fixed portion 41 and the fixed surface portion 41a and the curved surface side groove portion 31 sandwich the midway portion 21, the curved surface side inclined surface portion 31a abuts on the fixed side inclined surface portion 41b and further the fixed side inclined surface. In this embodiment, θ1 = θ2 (2) holds so that the surface portion 41b slides.
In this case, the fixed portion 41 including the fixed-side inclined surface portion 41b functions as a guide portion that guides the curved surface portion 30 including the curved-surface-side inclined surface portion 31a.

前記した式(1)と式(2)とによって、図1Eに示すように、中途部21が固定部41に突き当たる際、固定部41の少なくとも一部は曲面側溝部31に収容される。そして、図1Eに示すように、固定部41が曲面側溝部31に収容されることで、曲面側傾斜面部31aは固定側傾斜面部41bに当接し、曲面部30と固定部材40とが互いに位置決めされる。これにより光ファイバ20とプローブファイバ50とが光学的に結合することとなる。   As shown in FIG. 1E, when the midway part 21 abuts against the fixing part 41, at least a part of the fixing part 41 is accommodated in the curved side groove part 31 according to the above-described expressions (1) and (2). Then, as shown in FIG. 1E, when the fixing portion 41 is accommodated in the curved surface side groove portion 31, the curved surface side inclined surface portion 31a abuts on the fixed side inclined surface portion 41b, and the curved surface portion 30 and the fixing member 40 are positioned relative to each other. Is done. As a result, the optical fiber 20 and the probe fiber 50 are optically coupled.

[固定部材40におけるプローブファイバ50の保持]
図1Aに示すように、固定部材40は、プローブファイバ50が固定部材40の内部に配設され、プローブファイバ50が固定部材40の中心軸上に配設され、固定部材40の軸方向においてプローブファイバ50の端部が固定部41の中心軸と同軸上に配設されるように、プローブファイバ50を保持している。なお、図1Eに示すように、固定部材40は、固定部材40の軸方向においてプローブファイバ50の端部が固定部41の内部に配設され、プローブファイバ50の端面50aが固定面部41aと対向するように、プローブファイバ50を保持することが好適である。また図1Eに示すように、固定部材40は、固定部材40の軸方向においてプローブファイバ50の端面50aが固定面部41aと近接するように、プローブファイバ50を保持することがより好適である。このような固定部材40は、プローブファイバ50を保持する保持部材として機能し、光ファイバ20の中途部21を曲面部30と共に固定する固定部材として機能し、さらに固定によって光ファイバ20とプローブファイバ50とを光学的に結合するフェルールとして機能する。
[Holding of the probe fiber 50 in the fixing member 40]
As shown in FIG. 1A, the fixing member 40 includes a probe fiber 50 disposed inside the fixing member 40, a probe fiber 50 disposed on the central axis of the fixing member 40, and a probe in the axial direction of the fixing member 40. The probe fiber 50 is held so that the end of the fiber 50 is disposed coaxially with the central axis of the fixed portion 41. As shown in FIG. 1E, in the fixing member 40, the end portion of the probe fiber 50 is disposed inside the fixing portion 41 in the axial direction of the fixing member 40, and the end surface 50a of the probe fiber 50 faces the fixing surface portion 41a. Thus, it is preferable to hold the probe fiber 50. As shown in FIG. 1E, the fixing member 40 more preferably holds the probe fiber 50 so that the end surface 50a of the probe fiber 50 is close to the fixing surface portion 41a in the axial direction of the fixing member 40. Such a fixing member 40 functions as a holding member that holds the probe fiber 50, functions as a fixing member that fixes the midway portion 21 of the optical fiber 20 together with the curved surface portion 30, and further, the optical fiber 20 and the probe fiber 50 are fixed. Functions as a ferrule that optically couples.

固定部41含む固定部材40は、光ファイバ20から出力された光信号が透過可能で、さらに光信号が光ファイバ20に入力するように透過可能な部材によって形成されている。このような部材は、例えばガラスやアクリルなどの透明な部材を有している。   The fixing member 40 including the fixing portion 41 is formed of a member that can transmit the optical signal output from the optical fiber 20 and further transmit the optical signal so that the optical signal is input to the optical fiber 20. Such a member has a transparent member such as glass or acrylic.

[プローブファイバ50]
プローブファイバ50には、光ファイバ20の曲げ部23から側方に出力された光信号が固定面部41aと固定部41とを介して入力する。またプローブファイバ50は、固定面部41aと固定部41とを介して側方から曲げ部23を介して光ファイバ20に入力されるように、光信号を出力する。
[Probe fiber 50]
An optical signal output from the bent portion 23 of the optical fiber 20 to the side is input to the probe fiber 50 via the fixed surface portion 41 a and the fixed portion 41. The probe fiber 50 outputs an optical signal so that the probe fiber 50 is input to the optical fiber 20 from the side via the bending portion 23 via the fixed surface portion 41 a and the fixing portion 41.

[作用]
光ファイバ20の中途部21は、曲面側溝部31に載置される。このとき中途部21の周面の一部は、曲面側溝部31に当接する。
[Action]
The midway part 21 of the optical fiber 20 is placed in the curved side groove part 31. At this time, a part of the peripheral surface of the midway part 21 abuts on the curved surface side groove part 31.

図1Eに示すように、固定部41の一部が曲面側溝部31に収容されるように、曲面部30が固定部41に向かって移動する。このとき、固定側傾斜面部41bを含む固定部41は、曲面側傾斜面部31aを含む曲面部30をガイドする。詳細には、曲面側傾斜面部31aは、固定側傾斜面部41bに当接し、固定側傾斜面部41bを摺動する。そして、固定面部41aと曲面側溝部31とが中途部21を挟み込み固定する。このとき、光ファイバ20は、確実に固定面部41aに当接する。
前記において、曲面側溝部31は、中途部21を固定面部41aに向かって押し付け、固定面部41aからの反発によって例えば中途部21を曲面側溝部31の曲がり具合に沿わせ、中途部21を曲面側溝部31の曲がり具合に倣わせる。これにより、曲面側溝部31と固定面部41aとによって、曲面側溝部31の曲がり具合に対応する曲げ部23が中途部21に形成される。
As shown in FIG. 1E, the curved surface portion 30 moves toward the fixed portion 41 so that a part of the fixed portion 41 is accommodated in the curved surface side groove portion 31. At this time, the fixing portion 41 including the fixed-side inclined surface portion 41b guides the curved surface portion 30 including the curved-surface-side inclined surface portion 31a. Specifically, the curved-surface-side inclined surface portion 31a contacts the fixed-side inclined surface portion 41b and slides on the fixed-side inclined surface portion 41b. And the fixed surface part 41a and the curved surface side groove part 31 pinch | interpose and fix the midway part 21. FIG. At this time, the optical fiber 20 reliably contacts the fixed surface portion 41a.
In the above description, the curved surface side groove portion 31 presses the midway portion 21 toward the fixed surface portion 41a, and, for example, causes the midway portion 21 to follow the bending state of the curved surface side groove portion 31 by repulsion from the fixed surface portion 41a. The bending of the part 31 is imitated. As a result, the bent portion 23 corresponding to the degree of bending of the curved surface side groove portion 31 is formed in the midway portion 21 by the curved surface side groove portion 31 and the fixed surface portion 41a.

そして、図1Eに示すように、光ファイバ20は、固定部41を有する固定部材40によって保持されているプローブファイバ50と光学的に結合する。   As shown in FIG. 1E, the optical fiber 20 is optically coupled to the probe fiber 50 held by the fixing member 40 having the fixing portion 41.

なお図1Eに示す固定時において、固定部41の一部が曲面側溝部31に収容され、曲面側傾斜面部31aが固定側傾斜面部41bに当接するため、曲面部30と固定部材40とは、互いに位置決めされ、位置ずれを防止される。
前記によって、曲面側溝部31の中心と、固定部41の中心と、光ファイバ20の中心とは、同軸上に配設される。これにより、光ファイバ20は、アライメントされた状態で、ずれることなくプローブファイバ50と光学的に結合する。また光結合効率が高まる。
1E, a part of the fixing portion 41 is accommodated in the curved surface side groove portion 31 and the curved surface side inclined surface portion 31a contacts the fixed side inclined surface portion 41b. Therefore, the curved surface portion 30 and the fixing member 40 are Positioning each other prevents misalignment.
As described above, the center of the curved side groove portion 31, the center of the fixed portion 41, and the center of the optical fiber 20 are arranged coaxially. Thereby, the optical fiber 20 is optically coupled to the probe fiber 50 without being displaced in an aligned state. In addition, the optical coupling efficiency is increased.

また前記において、中途部21とプローブファイバ50の端面50aとの間には、平面で研磨された固定面部41aと透明な部材によって形成される固定部41とが配設される。このため図1Eに示すように、中途部21とプローブファイバ50の端面50aとの間に間隙部が形成されず、屈折率整合部材が不要となる。   Further, in the above description, between the midway portion 21 and the end surface 50a of the probe fiber 50, the fixed surface portion 41a polished by a flat surface and the fixed portion 41 formed by a transparent member are disposed. For this reason, as shown in FIG. 1E, no gap is formed between the midway portion 21 and the end face 50a of the probe fiber 50, and a refractive index matching member becomes unnecessary.

なお例えば1MPa程度の圧力が曲面部30に印加することによって、固定面部41aと曲面側傾斜面部31aとは光ファイバ20の被膜部分を変形させる。これにより、固定面部41aに対する光ファイバ20の接触面積は広がり、屈折率整合部材が用いられた場合と同じ程度にまで、光が入出力する。このため、屈折率整合部材は、確実に不要となる。   For example, when a pressure of about 1 MPa is applied to the curved surface portion 30, the fixed surface portion 41 a and the curved surface side inclined surface portion 31 a deform the coating portion of the optical fiber 20. Thereby, the contact area of the optical fiber 20 with respect to the fixed surface portion 41a is widened, and light is input and output to the same extent as when the refractive index matching member is used. For this reason, the refractive index matching member is certainly unnecessary.

このような状態で、例えば、光信号は、プローブファイバ50から光ファイバ20の側方に出力される。光信号は、プローブファイバ50の端面50aから出力され、固定部41を透過して、固定端面から光ファイバ20に入力される。
なお前記において光信号が入力されることを一例として説明したが、光信号が光ファイバ20からプローブファイバ50に向けて出力される場合についても略同様である。
In such a state, for example, an optical signal is output from the probe fiber 50 to the side of the optical fiber 20. The optical signal is output from the end surface 50 a of the probe fiber 50, passes through the fixing portion 41, and is input to the optical fiber 20 from the fixed end surface.
In the above description, the optical signal is input as an example. However, the same applies to the case where the optical signal is output from the optical fiber 20 toward the probe fiber 50.

[効果]
このように本実施形態では、図1Eに示すように、光ファイバ20の中途部21が曲面側溝部31に載置される。固定部41の一部が曲面側溝部31に収容され、曲面側溝部31と固定面部41aとは中途部21を挟み込んで固定する。このように光ファイバ20は、容易に、プローブファイバ50と光学的に結合することとなる。
また中途部21とプローブファイバ50の端面50aとの間には、平面で研磨された固定面部41aと透明な部材によって形成される固定部41が配設される。このため図1Eに示すように、中途部21とプローブファイバ50の端面50aとの間に間隙部が形成されず、屈折率整合部材が不要となり、低コストとなる。
そして光ファイバ20は、間隙部と屈折率整合部材とを介さず、固定部41を介してプローブファイバ50と光学的に結合する。
よって、本実施形態では、低コストで容易に光ファイバ20とプローブファイバ50とを光学的に結合できる。
[effect]
Thus, in the present embodiment, as shown in FIG. 1E, the midway part 21 of the optical fiber 20 is placed in the curved side groove part 31. A part of the fixing portion 41 is accommodated in the curved surface side groove portion 31, and the curved surface side groove portion 31 and the fixing surface portion 41 a sandwich and fix the midway portion 21. Thus, the optical fiber 20 is easily optically coupled to the probe fiber 50.
Between the midway portion 21 and the end surface 50a of the probe fiber 50, a fixed surface portion 41a polished by a flat surface and a fixed portion 41 formed by a transparent member are disposed. For this reason, as shown in FIG. 1E, no gap is formed between the midway portion 21 and the end face 50a of the probe fiber 50, eliminating the need for a refractive index matching member, thereby reducing the cost.
The optical fiber 20 is optically coupled to the probe fiber 50 via the fixing portion 41 without passing through the gap portion and the refractive index matching member.
Therefore, in this embodiment, the optical fiber 20 and the probe fiber 50 can be optically coupled easily at low cost.

また本実施形態では、フェルールとして機能する固定部材40において、固定面部41aは平面であるため、光ファイバ20とプローブファイバ50との間において屈折率整合部材を不要にできる。   In the present embodiment, in the fixing member 40 functioning as a ferrule, the fixing surface portion 41a is a flat surface, so that a refractive index matching member can be eliminated between the optical fiber 20 and the probe fiber 50.

また本実施形態では、屈折率整合部材を不要にできるため、屈折率整合部材が消耗することや、屈折率整合部材が時間の経過によって劣化し定着しなくなることや、屈折率整合部材を適宜補充することや、補充の手間と時間とを、解消できる。   Further, in this embodiment, since the refractive index matching member can be eliminated, the refractive index matching member is consumed, the refractive index matching member is deteriorated over time, and is not fixed, or the refractive index matching member is appropriately supplemented. And the time and effort of replenishment can be eliminated.

また本実施形態では、平面状の固定面部41aによって、光ファイバ20とプローブファイバ50とを互いに容易に光学的に結合でき、光ファイバ20を曲面側溝部31と共に挟み込んで固定でき、屈折率整合部材を不要にできる。また本実施形態では、固定側傾斜面部41bによって、固定面部41aを曲面側溝部31に確実に収容できる。   In the present embodiment, the optical fiber 20 and the probe fiber 50 can be easily optically coupled to each other by the flat fixing surface portion 41a, and the optical fiber 20 can be sandwiched and fixed together with the curved side groove portion 31, so that the refractive index matching member. Can be eliminated. Moreover, in this embodiment, the fixed surface part 41a can be reliably accommodated in the curved surface side groove part 31 by the fixed side inclined surface part 41b.

また本実施形態では、固定側傾斜面部41bが曲面側溝部31の曲面側傾斜面部31aに当接することによって、曲面部30と固定部材40とを互いに位置決めでき、位置ずれを防止できる。また本実施形態では、前記によって、曲面側溝部31の中心と、固定部41の中心と、光ファイバ20の中心とを、同軸上に配設でき、容易にアライメントされた状態で、光ファイバ20をずらすことなくプローブファイバ50と光学的に結合でき、光結合効率を高めることができる。   In the present embodiment, the fixed-side inclined surface portion 41b abuts on the curved-surface-side inclined surface portion 31a of the curved-surface-side groove portion 31, whereby the curved surface portion 30 and the fixing member 40 can be positioned with respect to each other, and displacement can be prevented. Further, in the present embodiment, the optical fiber 20 can be disposed coaxially and easily aligned with the center of the curved side groove portion 31, the center of the fixed portion 41, and the center of the optical fiber 20 as described above. It is possible to optically couple with the probe fiber 50 without shifting the position, and the optical coupling efficiency can be increased.

また本実施形態では、固定面部41aが研磨されることによって、光信号の透過率を向上できる。また本実施形態では、固定面部41aのみを研磨すればよいため、一端面40a全体を研磨する必要はなく、加工費用を安価にできる。もちろん一端面40a全体が研磨されていてもよい。   In the present embodiment, the transmittance of the optical signal can be improved by polishing the fixed surface portion 41a. In this embodiment, since only the fixed surface portion 41a needs to be polished, it is not necessary to polish the entire one end surface 40a, and the processing cost can be reduced. Of course, the entire end surface 40a may be polished.

なお、本実施形態とは異なり、図1Fに示すように、V字形状の溝部101がフェルールとして機能する固定部材40に配設され、固定部41のような凸部103が曲面部30に配設されるとする。この場合、光ファイバ20の中途部21は溝部101に載置され、中途部21と溝部101との間に間隙部105が発生する。そしてプローブファイバ50から出力された光信号は、間隙部105における空気層を介して光ファイバ20に入力する。空気の屈折率が小さく、光ファイバ20の屈折率が大きいため、空気と光ファイバ20との界面における反射率は高くなる。このため、光結合効率が低下してしまう。光ファイバ20から出力された光信号がプローブファイバ50に入力する場合についても略同様である。このため、このような構成では、界面における反射率は高くなることを解消するために、間隙部105を含む溝部101に配設される図示しない屈折率整合部材が必須となってしまう。
しかしながら、本実施形態では、図1Eに示すように、V字形状の曲面側溝部31は、フェルールとして機能する固定部材40に配設されるのではなく、固定面部41aに中途部21を突き当てる突き当て部として機能する曲面部30に配設される。このため、本実施形態では、間隙部105が発生することぉ防止でき、光ファイバ20とプローブファイバ50とを位置決めできると共に、平面状の固定面部41aを有するフェルールとして機能する固定部材40側に屈折率整合部材が配設されることを不要にでき、光の結合効率を高めることができる。
Unlike the present embodiment, as shown in FIG. 1F, the V-shaped groove portion 101 is disposed on the fixing member 40 functioning as a ferrule, and the convex portion 103 such as the fixing portion 41 is disposed on the curved surface portion 30. Suppose that it is installed. In this case, the midway part 21 of the optical fiber 20 is placed in the groove part 101, and a gap part 105 is generated between the midway part 21 and the groove part 101. The optical signal output from the probe fiber 50 is input to the optical fiber 20 through the air layer in the gap portion 105. Since the refractive index of air is small and the refractive index of the optical fiber 20 is large, the reflectance at the interface between the air and the optical fiber 20 is high. For this reason, optical coupling efficiency will fall. The same applies to the case where the optical signal output from the optical fiber 20 is input to the probe fiber 50. For this reason, in such a configuration, a refractive index matching member (not shown) disposed in the groove portion 101 including the gap portion 105 is indispensable in order to eliminate the increase in reflectance at the interface.
However, in this embodiment, as shown in FIG. 1E, the V-shaped curved side groove portion 31 is not disposed in the fixing member 40 functioning as a ferrule, but abuts the midway portion 21 against the fixing surface portion 41a. It arrange | positions in the curved surface part 30 which functions as an abutting part. For this reason, in this embodiment, it can prevent that the gap | interval part 105 generate | occur | produces, can position the optical fiber 20 and the probe fiber 50, and it is refracted to the fixing member 40 side which functions as a ferrule which has the planar fixed surface part 41a. It is unnecessary to provide the rate matching member, and the light coupling efficiency can be increased.

また本実施形態とは異なり、図1Gと図1Hとに示すように、固定部41が配設されず、V字形状の曲面側溝部31のみが配設されるとする。
この場合、図1Gに示すように、光ファイバ20全体が曲面側溝部31に収容されるように、光ファイバ20の径が小さいと、曲面部30が一端面40aに当接した際に、光ファイバ20は曲面側溝部31と一端面40aとに挟まれて固定されない虞が生じる。
また図1Hに示すように、光ファイバ20の一部が曲面側溝部31に収容され他部が曲面側溝部31から露出するように、光ファイバ20の径が大きいと、プローブファイバ50を有する固定部材40が曲面部30と光ファイバ20とに対してずれて、光の結合効率が低下する虞が生じる。また、光の結合効率は、光ファイバ20の挟み込みの度にばらつきが生じる。またこれらを解消するための、曲面部30と光ファイバ20とに対するプローブファイバ50を有する固定部材40の位置調整には手間がかかり、光ファイバ20とプローブファイバ50と光学的なアライメントにも手間がかかる。
しかしながら本実施形態では、図1Eに示すように、固定時において、固定部41の一部が曲面側溝部31に収容され、曲面側傾斜面部31aが固定側傾斜面部41bに当接するため、曲面部30と固定部材40とは、互いに位置決めされる、位置ずれを防止される。
よって本実施形態では、光ファイバ20を確実に曲面側溝部31と固定面部41aとに挟んで固定でき、アライメントされた状態で光ファイバ20をずらすことなくプローブファイバ50と光学的に結合でき、光の結合効率を高めることができる。また本実施形態では、常に所望する光の結合効率を確保でき、曲面部30と光ファイバ20とに対する固定部材40の位置調整に手間がかかることを防止できる。
Unlike the present embodiment, as shown in FIG. 1G and FIG. 1H, it is assumed that the fixing portion 41 is not provided and only the V-shaped curved side groove portion 31 is provided.
In this case, as shown in FIG. 1G, when the diameter of the optical fiber 20 is small so that the entire optical fiber 20 is accommodated in the curved-surface side groove portion 31, when the curved surface portion 30 comes into contact with the one end surface 40a, There is a possibility that the fiber 20 is not fixed by being sandwiched between the curved side groove portion 31 and the one end surface 40a.
Further, as shown in FIG. 1H, when the diameter of the optical fiber 20 is large so that a part of the optical fiber 20 is accommodated in the curved-side groove 31 and the other part is exposed from the curved-side groove 31, the fixing with the probe fiber 50 is performed. There is a possibility that the member 40 is displaced with respect to the curved surface portion 30 and the optical fiber 20 to reduce the light coupling efficiency. In addition, the coupling efficiency of light varies every time the optical fiber 20 is sandwiched. In order to solve these problems, it takes time to adjust the position of the fixing member 40 having the probe fiber 50 with respect to the curved surface portion 30 and the optical fiber 20, and it also takes time to optically align the optical fiber 20 and the probe fiber 50. Take it.
However, in the present embodiment, as shown in FIG. 1E, at the time of fixing, a part of the fixing portion 41 is accommodated in the curved surface side groove portion 31, and the curved surface side inclined surface portion 31a contacts the fixed side inclined surface portion 41b. 30 and the fixing member 40 are positioned with respect to each other and are prevented from being displaced.
Therefore, in the present embodiment, the optical fiber 20 can be reliably sandwiched and fixed between the curved side groove portion 31 and the fixed surface portion 41a, and can be optically coupled to the probe fiber 50 without shifting the optical fiber 20 in an aligned state. The coupling efficiency can be increased. Further, in the present embodiment, it is possible to always ensure the desired light coupling efficiency, and to prevent troublesome adjustment of the position of the fixing member 40 with respect to the curved surface portion 30 and the optical fiber 20.

また本実施形態では、複雑な機構を必要とせずに前記を実施でき、入出力装置10を低コストにできる。   Moreover, in this embodiment, the above can be implemented without requiring a complicated mechanism, and the input / output device 10 can be reduced in cost.

また本実施形態では、固定面部41aは、平面であるがこれに限定される必要はない。例えば、固定面部41aは、固定面部41aが曲面側溝部31と共に中途部21を挟み込んで固定する際、固定面部41aの少なくとも一部に配設され、中途部21の一部に密着する図示しない密着部を有していてもよい。この密着部は、例えば円弧形状を有しており、中途部21の周方向において中途部21と同じ曲率を有している。   Moreover, in this embodiment, although the fixed surface part 41a is a plane, it does not need to be limited to this. For example, the fixed surface portion 41 a is disposed on at least a part of the fixed surface portion 41 a and is in close contact with a part of the intermediate portion 21 when the fixed surface portion 41 a is fixed together with the curved surface side groove portion 31. May have a part. The contact portion has, for example, an arc shape, and has the same curvature as that of the midway portion 21 in the circumferential direction of the midway portion 21.

[第2の実施形態]
以下に、図2Aと図2Bと図2Cとを参照して、前記した実施形態とは異なる点のみ記載する。
[構成]
[曲面部30]
図2Aと図2Cとに示すように、曲面部30は、円筒部30aの周面の一部に対して凸設されている凸部30bとして形成される。
[Second Embodiment]
Hereinafter, only points different from the above-described embodiment will be described with reference to FIGS. 2A, 2B, and 2C.
[Constitution]
[Curved surface portion 30]
As shown in FIG. 2A and FIG. 2C, the curved surface portion 30 is formed as a convex portion 30b that protrudes from a part of the peripheral surface of the cylindrical portion 30a.

そして曲面側溝部31は、この凸部30bに配設されている。このため、図2Aに示すように、曲面側開口部33は、円筒部30aの周面と同一平面上に配設されておらず、円筒部30aの周面よりも固定部41側に配設される。   The curved groove portion 31 is disposed on the convex portion 30b. For this reason, as shown in FIG. 2A, the curved surface side opening 33 is not arranged on the same plane as the circumferential surface of the cylindrical portion 30a, and is arranged closer to the fixed portion 41 than the circumferential surface of the cylindrical portion 30a. Is done.

そして、このように形成される曲面部30は、曲面側溝部31の両脇部に配設され、曲面側溝部31の底部と円筒部30aの周面とに対して凸設されている曲面側凸部35をさらに有することとなる。曲面側凸部35は、曲面側凸部35の高さ方向において、円筒部30aの周面から固定部材40に向かって先細に形成されている。このため、曲面側凸部35は、曲面側凸部35の先端に配設されている鋭利な嶺部35aを有することとなる。このような曲面側凸部35は、曲面側凸部35の幅方向において左右対称となる形状、例えばV字形状を有している。曲面側傾斜面部31aは、曲面側凸部35の側面を兼ねる。   The curved surface portion 30 formed in this way is disposed on both sides of the curved surface side groove portion 31, and is protruded from the bottom portion of the curved surface side groove portion 31 and the peripheral surface of the cylindrical portion 30a. The protrusion 35 is further provided. The curved surface side convex portion 35 is tapered from the peripheral surface of the cylindrical portion 30 a toward the fixing member 40 in the height direction of the curved surface side convex portion 35. For this reason, the curved surface side convex part 35 has the sharp collar part 35a arrange | positioned at the front-end | tip of the curved surface side convex part 35. As shown in FIG. The curved surface side convex portion 35 has a shape that is bilaterally symmetrical in the width direction of the curved surface side convex portion 35, for example, a V shape. The curved surface side inclined surface portion 31 a also serves as the side surface of the curved surface side convex portion 35.

[固定部41]
図2Bと図2Cとに示すように、固定部41は一端面40aに対して凸設されておらず、固定面部41aは一端面40aと同一平面上に形成されている。本実施形態では、固定面部41aが曲面側溝部31に収容され、固定面部41aの周囲を固定面部41aに対して窪ませるために、固定部41は、固定面部41aの両脇部に配設され、固定面部41aと一端面40aとに対して凹設されている固定側溝部41cをさらに有している。固定側溝部41cは、例えば楕円の長軸に沿って連続して配設されている。つまり、固定側溝部41cは、固定面部41aと平行に配設されている。固定側溝部41c同士も互いに平行に配設されることとなる。固定側溝部41cは曲面側凸部35と対向し、固定側溝部41cには曲面側凸部35の一部が収容される。なお曲面側凸部35全体が固定側溝部41cに収容されてもよい。
[Fixing portion 41]
As shown in FIG. 2B and FIG. 2C, the fixing portion 41 is not protruded with respect to the one end surface 40a, and the fixing surface portion 41a is formed on the same plane as the one end surface 40a. In the present embodiment, the fixed surface portion 41a is accommodated in the curved surface side groove portion 31, and the fixed portion 41 is disposed on both sides of the fixed surface portion 41a in order to dent the periphery of the fixed surface portion 41a with respect to the fixed surface portion 41a. The fixed side groove 41c is further recessed with respect to the fixed surface portion 41a and the one end surface 40a. The fixed-side groove portion 41c is continuously arranged, for example, along an elliptical long axis. That is, the fixed side groove portion 41c is disposed in parallel with the fixed surface portion 41a. The fixed side groove portions 41c are also arranged in parallel to each other. The fixed side groove portion 41c faces the curved surface side convex portion 35, and a part of the curved surface side convex portion 35 is accommodated in the fixed side groove portion 41c. The entire curved surface side convex portion 35 may be accommodated in the fixed side groove portion 41c.

言い換えると、固定側溝部41cの間に配設される一端面40aの一部が固定面部41aとして機能する。そして、固定側溝部41cは、一端面40aに対して凹設されることとなる。   In other words, a part of the one end surface 40a disposed between the fixed side groove portions 41c functions as the fixed surface portion 41a. And the fixed side groove part 41c will be recessedly provided with respect to the one end surface 40a.

固定側溝部41cは、固定側溝部41cの幅方向において左右対称となる形状、例えばV字形状を有している。このような固定側溝部41cは、固定側溝部41cの内面の一部として機能する固定側傾斜面部41bを有している。固定側傾斜面部41bの一端部は固定面部41aと連接しており、固定側傾斜面部41bの他端部は他方の固定側斜面の端部と当接している。   The fixed side groove 41c has a shape that is bilaterally symmetrical in the width direction of the fixed side groove 41c, for example, a V-shape. Such a fixed side groove part 41c has the fixed side inclined surface part 41b which functions as a part of inner surface of the fixed side groove part 41c. One end portion of the fixed-side inclined surface portion 41b is connected to the fixed surface portion 41a, and the other end portion of the fixed-side inclined surface portion 41b is in contact with the end portion of the other fixed-side inclined surface.

曲面部30が一端面に向かって移動し、固定面部41aと曲面側溝部31とが中途部21を挟み込む際、固定面部41aが曲面側溝部31に収容されると同時に、曲面側傾斜面部31aの少なくとも一部が固定側傾斜面部41bに当接し固定側傾斜面部41bを摺動するよう、曲面側凸部35の少なくとも一部は固定側溝部41cに収容される。   When the curved surface portion 30 moves toward one end surface and the fixed surface portion 41a and the curved surface side groove portion 31 sandwich the midway portion 21, the fixed surface portion 41a is accommodated in the curved surface side groove portion 31, and at the same time, the curved surface side inclined surface portion 31a. At least a part of the curved-surface-side convex portion 35 is accommodated in the fixed-side groove portion 41c so that at least a part of the curved-surface-side convex portion 35 abuts on the fixed-side inclined surface portion 41b and slides on the fixed-side inclined surface portion 41b.

[効果]
本実施形態では、曲面側凸部35と固定側溝部41cとによって、曲面部30と固定部材40とを互いに確実に位置決めでき、位置ずれを確実に防止できる。また本実施形態では、前記によって、曲面側溝部31の中心と、固定部41の中心と、光ファイバ20の中心とを、同軸上に確実に配設でき、アライメントされた状態で光ファイバ20をずらすことなくプローブファイバ50と光学的に確実に結合でき、光結合効率をより高めることができる。
[effect]
In the present embodiment, the curved surface portion 30 and the fixing member 40 can be reliably positioned relative to each other by the curved surface side convex portion 35 and the fixed side groove portion 41c, and positional deviation can be reliably prevented. Moreover, in this embodiment, the center of the curved surface side groove part 31, the center of the fixing | fixed part 41, and the center of the optical fiber 20 can be reliably arrange | positioned coaxially by the above, and the optical fiber 20 is arrange | positioned in the aligned state. The probe fiber 50 can be optically and reliably coupled without shifting, and the optical coupling efficiency can be further increased.

[第3の実施形態]
図3に示すように、本実施形態は、第1の実施形態における固定部材40と、第2の実施形態における曲面部30との組み合わせである。
[Third Embodiment]
As shown in FIG. 3, the present embodiment is a combination of the fixing member 40 in the first embodiment and the curved surface portion 30 in the second embodiment.

本実施形態では、第1の実施形態の効果と第2の実施形態の効果と同様の効果を得ることができる。   In the present embodiment, the same effects as those of the first embodiment and the second embodiment can be obtained.

[第4の実施形態]
図4に示すように、曲面側溝部31の縁部と、固定部41の縁部である固定面部41aと固定側傾斜面部41bとの連接部分とは、円弧部60を有している。
[Fourth Embodiment]
As shown in FIG. 4, the edge portion of the curved surface side groove portion 31 and the connecting portion between the fixed surface portion 41 a and the fixed side inclined surface portion 41 b which are the edge portions of the fixed portion 41 have arc portions 60.

これにより本実施形態では、円弧部60は、曲面側溝部31の縁部が固定側傾斜面部41bを傷つけることを防止でき、連接部分が曲面側傾斜面部31aを傷つけることを防止できる。   Thereby, in this embodiment, the circular arc part 60 can prevent the edge part of the curved surface side groove part 31 from damaging the stationary-side inclined surface part 41b, and can prevent that a connection part damages the curved surface side inclined surface part 31a.

なお曲面側溝部31の縁部と、固定部41の縁部である固定面部41aと固定側傾斜面部41bとの連接部分との少なくとも一方が円弧部60を有していればよい。   It should be noted that at least one of the edge portion of the curved surface side groove portion 31 and the connecting portion of the fixed surface portion 41a and the fixed side inclined surface portion 41b that is the edge portion of the fixed portion 41 may have the arc portion 60.

[第5の実施形態]
図5に示すように、固定面部41aは、曲面部30の曲面側溝部31と同じ曲率を有する曲面として形成されてもよい。固定面部41aの曲がり具合は、曲面側溝部31の曲がり具合に対応する。これらの曲がり具合は、互いに同一である。またこれらの曲率は、例えば一定である。
[Fifth Embodiment]
As shown in FIG. 5, the fixed surface portion 41 a may be formed as a curved surface having the same curvature as the curved surface side groove portion 31 of the curved surface portion 30. The degree of bending of the fixed surface portion 41 a corresponds to the degree of bending of the curved side groove portion 31. These bends are the same as each other. These curvatures are constant, for example.

これにより本実施形態では、固定面部41aによって曲げ部23を確実且つ容易に形成でき、中途部21の曲げ形状に沿わせて固定面部41aを中途部21に当接でき、中途部21を確実に固定できる。   Thereby, in this embodiment, the bending part 23 can be reliably and easily formed by the fixed surface part 41a, the fixed surface part 41a can be brought into contact with the intermediate part 21 along the bent shape of the intermediate part 21, and the intermediate part 21 can be reliably Can be fixed.

[第6の実施形態]
固定部材40は、直方体のファイバブロックでもよい。
[Sixth Embodiment]
The fixing member 40 may be a rectangular parallelepiped fiber block.

また本発明は、上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合せにより種々の発明を形成できる。
例えば、実施形態に示される全構成要素から幾つかの構成を削除してもよい。さらに、異なる実施形態に亘る構成要素を適宜組み合わせてもよい。
Further, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment.
For example, some configurations may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

10…入出力装置、20…光ファイバ、21…中途部、23…曲げ部、30…曲面部、31…曲面側溝部、31a…曲面側傾斜面部、40…固定部材、41…固定部、41a…固定面部、41b…固定側傾斜面部、50…プローブファイバ。   DESCRIPTION OF SYMBOLS 10 ... Input / output device, 20 ... Optical fiber, 21 ... Midway part, 23 ... Bending part, 30 ... Curved surface part, 31 ... Curved surface side groove part, 31a ... Curved surface side inclined surface part, 40 ... Fixing member, 41 ... Fixing part, 41a ... fixed surface part, 41b ... fixed side inclined surface part, 50 ... probe fiber.

Claims (5)

光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力装置であって、
直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部が載置される曲面部と、
前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部が突き当たり、突き当りによって前記曲面部と共に前記中途部に曲げ部を形成し、突き当りによって前記曲面部と共に前記中途部を挟み込んで前記曲面部と共に前記中途部を固定する固定部材と、
前記光ファイバに対して前記光信号を入出力するプローブファイバと、
を具備し、
前記プローブファイバは、前記プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように、前記固定部材によって保持され、
前記曲面部は、前記中途部が載置される曲面側溝部を有し、
前記固定部材は、前記曲面部が前記固定部材に突き当たる際、前記曲面側溝部に載置されている前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定する固定部を有し、
前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部は前記曲面側溝部に収容され、
前記固定部は、
前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定し、固定時に固定のために前記曲面側溝部に収容される平面状の固定面部と、
前記固定面部が前記曲面側溝部に収容されるために前記固定面部の周囲を前記固定面部に対して窪ませ、窪ませるために前記固定面部に対して傾斜している固定側傾斜面部と、
を有し、
前記曲面部は、円筒部の周面の一部に対して凸設されている凸部として形成され、
前記曲面側溝部は、前記凸部に配設され、
前記曲面部は、前記曲面側溝部の両脇部に配設され、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設されている曲面側凸部をさらに有し、
前記曲面側溝部の曲面側傾斜面部は、前記曲面側凸部の側面を兼ね、
前記固定面部は、前記固定部材の一端面の一部として機能し、
前記固定部は、前記固定面部の両脇部に配設され、前記固定面部と前記固定部材の前記一端面とに対して凹設されている固定側溝部をさらに有し、
前記固定側溝部は、前記固定側溝部の内面の一部として機能する前記固定側傾斜面部を有し、
前記曲面部が前記一端面に向かって移動し、前記固定面部と前記曲面側溝部とが前記中途部を挟み込む際、前記固定面部が前記曲面側溝部に収容されると同時に、前記曲面側傾斜面部の少なくとも一部が前記固定側傾斜面部に当接し前記固定側傾斜面部を摺動するように、前記曲面側凸部の少なくとも一部は前記固定側溝部に収容されることを特徴とする光ファイバ側方入出力装置。
An optical fiber side input / output device for inputting / outputting optical signals to / from the optical fiber from the side of the optical fiber,
A curved surface portion on which the midway portion is placed to form a bent portion in the midway portion of the linear optical fiber;
The curved surface part including the midway part is abutted so as to sandwich the midway part together with the curved surface part, a bent part is formed in the midway part together with the curved surface part by abutment, and the midway part is sandwiched together with the curved surface part by abutment A fixing member for fixing the midway portion together with the curved surface portion;
A probe fiber that inputs and outputs the optical signal to and from the optical fiber;
Comprising
The probe fiber is held by the fixing member so that the optical signal input / output from / to the probe fiber is input / output to / from the side of the optical fiber,
The curved surface portion has a curved side groove portion on which the midway portion is placed,
The fixing member includes a fixing portion that fixes the intermediate portion that is placed in the curved surface side groove when the curved surface portion abuts against the fixing member, and sandwiches the intermediate portion together with the curved surface side groove by the contact. Have
When the intermediate portion abuts on the fixed portion, the curved surface portion and said fixing member are positioned relative to each other, such that the probe fiber and the optical fiber is optically coupled to one another by the positioning, at least one said fixed portion The part is accommodated in the curved side groove part,
The fixing part is
The midway part hits, and is fixed by sandwiching the midway part together with the curved side groove part by hitting, and a flat fixed surface part accommodated in the curved side groove part for fixing at the time of fixing,
The fixed surface portion is recessed in the curved surface side groove portion so that the periphery of the fixed surface portion is recessed with respect to the fixed surface portion, and the fixed side inclined surface portion that is inclined with respect to the fixed surface portion in order to be recessed,
Have
The curved surface portion is formed as a convex portion that is convex with respect to a part of the peripheral surface of the cylindrical portion,
The curved groove portion is disposed on the convex portion,
The curved surface portion further includes curved surface side convex portions that are disposed on both sides of the curved surface side groove portion and are protruded with respect to a bottom portion of the curved surface side groove portion and a peripheral surface of the cylindrical portion,
The curved surface side inclined surface portion of the curved surface side groove portion also serves as a side surface of the curved surface side convex portion,
The fixing surface portion functions as a part of one end surface of the fixing member,
The fixing portion further includes a fixing side groove portion disposed on both sides of the fixing surface portion and recessed with respect to the fixing surface portion and the one end surface of the fixing member,
The fixed-side groove portion has the fixed-side inclined surface portion that functions as a part of the inner surface of the fixed-side groove portion,
When the curved surface portion moves toward the one end surface and the fixed surface portion and the curved surface side groove portion sandwich the midway portion, the fixed surface portion is accommodated in the curved surface side groove portion, and at the same time, the curved surface side inclined surface portion. An optical fiber characterized in that at least a part of the curved-surface-side convex portion is accommodated in the fixed-side groove portion so that at least a part of the curved-surface-side convex portion comes into contact with and slides on the fixed-side inclined surface portion. Side input / output device.
光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力装置であって、  An optical fiber side input / output device for inputting / outputting optical signals to / from the optical fiber from the side of the optical fiber,
直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部が載置される曲面部と、  A curved surface portion on which the midway portion is placed to form a bent portion in the midway portion of the linear optical fiber;
前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部が突き当たり、突き当りによって前記曲面部と共に前記中途部に曲げ部を形成し、突き当りによって前記曲面部と共に前記中途部を挟み込んで前記曲面部と共に前記中途部を固定する固定部材と、  The curved surface part including the midway part is abutted so as to sandwich the midway part together with the curved surface part, a bent part is formed in the midway part together with the curved surface part by abutment, and the midway part is sandwiched together with the curved surface part by abutment A fixing member for fixing the midway portion together with the curved surface portion;
前記光ファイバに対して前記光信号を入出力するプローブファイバと、  A probe fiber that inputs and outputs the optical signal to and from the optical fiber;
を具備し、  Comprising
前記プローブファイバは、前記プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように、前記固定部材によって保持され、  The probe fiber is held by the fixing member so that the optical signal input / output from / to the probe fiber is input / output to / from the side of the optical fiber,
前記曲面部は、前記中途部が載置される曲面側溝部を有し、  The curved surface portion has a curved side groove portion on which the midway portion is placed,
前記固定部材は、前記曲面部が前記固定部材に突き当たる際、前記曲面側溝部に載置されている前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定する固定部を有し、  The fixing member includes a fixing portion that fixes the intermediate portion that is placed in the curved surface side groove when the curved surface portion abuts against the fixing member, and sandwiches the intermediate portion together with the curved surface side groove by the contact. Have
前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部は前記曲面側溝部に収容され、  When the midway portion abuts against the fixing portion, the curved surface portion and the fixing member are positioned relative to each other, and at least one of the fixing portions is optically coupled to each other by positioning. The part is accommodated in the curved side groove part,
前記固定部は、  The fixing part is
前記中途部が突き当たり、突き当りによって前記曲面側溝部と共に前記中途部を挟み込んで固定し、固定時に固定のために前記曲面側溝部に収容される平面状の固定面部と、    The midway part hits, and is fixed by sandwiching the midway part together with the curved side groove part by hitting, and a flat fixed surface part accommodated in the curved side groove part for fixing at the time of fixing,
前記固定面部が前記曲面側溝部に収容されるために前記固定面部の周囲を前記固定面部に対して窪ませ、窪ませるために前記固定面部に対して傾斜している固定側傾斜面部と、    The fixed surface portion is recessed in the curved surface side groove portion so that the periphery of the fixed surface portion is recessed with respect to the fixed surface portion, and the fixed side inclined surface portion that is inclined with respect to the fixed surface portion in order to be recessed,
を有し、  Have
前記曲面部は、円筒部の周面の一部に対して凸設されている凸部として形成され、  The curved surface portion is formed as a convex portion that is convex with respect to a part of the peripheral surface of the cylindrical portion,
前記曲面側溝部は、前記凸部に配設され、  The curved groove portion is disposed on the convex portion,
前記曲面部は、前記曲面側溝部の両脇部に配設され、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設されている曲面側凸部をさらに有し、  The curved surface portion further includes curved surface side convex portions that are disposed on both sides of the curved surface side groove portion and are protruded with respect to a bottom portion of the curved surface side groove portion and a peripheral surface of the cylindrical portion,
前記曲面側溝部の曲面側傾斜面部は、前記曲面側凸部の側面を兼ね、  The curved surface side inclined surface portion of the curved surface side groove portion also serves as a side surface of the curved surface side convex portion,
前記固定部は、前記固定部材の一端面に対して凸設されており、台形形状を有し、  The fixing portion is protruded with respect to one end surface of the fixing member, has a trapezoidal shape,
前記固定面部は、台形の上面として機能し、研磨されており、  The fixed surface portion functions as a trapezoidal upper surface and is polished;
前記固定側傾斜面部は、台形の側面として機能し、  The fixed-side inclined surface portion functions as a trapezoidal side surface,
前記固定部が前記曲面側溝部に収容された際、前記固定側傾斜面部の少なくとも一部は、前記曲面側溝部の曲面側傾斜面部に当接することを特徴とする光ファイバ側方入出力装置。  The optical fiber side input / output device according to claim 1, wherein when the fixing portion is accommodated in the curved surface side groove portion, at least a part of the fixed side inclined surface portion abuts on the curved surface side inclined surface portion of the curved surface side groove portion.
前記曲面側溝部の縁部と前記固定部の縁部との少なくとも一方は、円弧部を有することを特徴とする請求項1または請求項2に記載の光ファイバ側方入出力装置。 3. The optical fiber side input / output device according to claim 1, wherein at least one of an edge portion of the curved side groove portion and an edge portion of the fixed portion has an arc portion. 4. 光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力方法であって、
曲面部に、直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部を載置し、
固定部材が前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部を前記固定部材に突き当て、突き当りによって前記固定部材と前記曲面部とによって前記中途部に曲げ部を形成し、突き当りによって前記固定部材と前記曲面部とによって前記中途部を挟み込んで前記中途部を固定し、
前記光ファイバに対して前記光信号を入出力し、プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように前記固定部材に前記プローブファイバを保持させ、
前記中途部を前記曲面部の曲面側溝部に載置し、
前記曲面部が前記固定部材に突き当たる際、前記固定部材の固定部に前記曲面側溝部に配設されている前記中途部を突き当て、突き当りによって前記曲面側溝部と前記固定部とによって前記中途部を挟み込んで固定し、
前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部を前記曲面側溝部に収容し、
前記固定部の平面状の固定面部に前記中途部を突き当て、突き当てによって前記固定面部と前記曲面側溝部とで前記中途部を挟み込んで固定し、固定時に固定のために前記固定面部を前記曲面側溝部に収容し、
前記固定面部を前記曲面側溝部に収容するために前記固定面部の周囲を前記固定面部に対して傾斜している固定側傾斜面部によって窪ませ、
前記曲面部を、円筒部の周面の一部に対して凸設されている凸部として形成し、
前記曲面側溝部を、前記凸部に配設し、
前記曲面部の曲面側凸部を、前記曲面側溝部の両脇部に配設し、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設させ、
前記曲面側溝部の曲面側傾斜面部を、前記曲面側凸部の側面を兼ねさせ、
前記固定面部を、前記固定部材の一端面の一部として機能させ、
前記固定部の固定側溝部を、前記固定面部の両脇部に配設し、前記固定面部と前記固定部材の前記一端面とに対して凹設させ、
前記固定側溝部の前記固定側傾斜面部を、前記固定側溝部の内面の一部として機能させ、
前記曲面部を前記一端面に向かって移動させ、前記固定面部と前記曲面側溝部とによって前記中途部を挟み込む際、前記固定面部を前記曲面側溝部に収容すると同時に、前記曲面側傾斜面部の少なくとも一部が前記固定側傾斜面部に当接し前記固定側傾斜面部を摺動するように、前記曲面側凸部の少なくとも一部を前記固定側溝部に収容することを特徴とする光ファイバ側方入出力方法。
An optical fiber side input / output method for inputting / outputting an optical signal to / from the optical fiber from the side of the optical fiber,
Place the midway part to form a bent part in the midway part of the linear optical fiber on the curved surface part,
The curved member including the intermediate part is abutted against the fixing member so that the fixing member sandwiches the intermediate part together with the curved part, and a bent part is formed in the intermediate part by the fixing member and the curved part by abutment. , The intermediate part is sandwiched between the fixing member and the curved surface part by abutment, and the intermediate part is fixed.
To output the optical signal to the optical fiber, the fiber probe to the fixed member so as to be output to the optical fiber the optical signal output from the probe fiber from the side of the optical fiber Hold
Placing the midway part in the curved surface side groove part of the curved surface part,
When the curved surface portion abuts against the fixing member, the midway portion disposed in the curved surface side groove portion is abutted against the fixing portion of the fixing member, and the midway portion is formed by the curved surface side groove portion and the fixing portion by abutment. Pinch and fix,
When the intermediate portion abuts on the fixed portion, the curved surface portion and said fixing member are positioned relative to each other, such that the probe fiber and the optical fiber is optically coupled to one another by the positioning, at least one said fixed portion Part is accommodated in the curved side groove ,
The intermediate portion is abutted against the flat fixed surface portion of the fixing portion, and the intermediate portion is sandwiched and fixed by the abutment between the fixing surface portion and the curved-surface side groove portion, and the fixing surface portion is fixed for fixing at the time of fixing. Housed in the curved side groove,
In order to accommodate the fixed surface portion in the curved side groove portion, the periphery of the fixed surface portion is recessed by a fixed inclined surface portion inclined with respect to the fixed surface portion,
The curved surface portion is formed as a convex portion that is convex with respect to a part of the peripheral surface of the cylindrical portion,
The curved side groove portion is disposed on the convex portion,
The curved surface side convex portion of the curved surface portion is disposed on both sides of the curved surface side groove portion, and is protruded from the bottom portion of the curved surface side groove portion and the peripheral surface of the cylindrical portion,
The curved surface side inclined surface portion of the curved surface side groove portion also serves as the side surface of the curved surface side convex portion,
The fixed surface portion functions as a part of one end surface of the fixing member,
The fixing side groove portion of the fixing portion is disposed on both sides of the fixing surface portion, and is recessed with respect to the fixing surface portion and the one end surface of the fixing member,
The fixed-side inclined surface portion of the fixed-side groove portion functions as a part of the inner surface of the fixed-side groove portion,
When the curved surface portion is moved toward the one end surface and the midway portion is sandwiched between the fixed surface portion and the curved surface side groove portion, the fixed surface portion is accommodated in the curved surface side groove portion, and at the same time, at least of the curved surface side inclined surface portion. An optical fiber side entrance characterized in that at least a part of the curved-surface-side convex portion is accommodated in the fixed-side groove portion so that a part thereof abuts on the fixed-side inclined surface portion and slides on the fixed-side inclined surface portion. output method.
光ファイバの側方から光信号を前記光ファイバに入出力する光ファイバ側方入出力方法であって、  An optical fiber side input / output method for inputting / outputting an optical signal to / from the optical fiber from the side of the optical fiber,
曲面部に、直線状の前記光ファイバの中途部に曲げ部を形成するために前記中途部を載置し、  Place the midway part to form a bent part in the midway part of the linear optical fiber on the curved surface part,
固定部材が前記曲面部と共に前記中途部を挟み込むように前記中途部を含む前記曲面部を前記固定部材に突き当て、突き当りによって前記固定部材と前記曲面部とによって前記中途部に曲げ部を形成し、突き当りによって前記固定部材と前記曲面部とによって前記中途部を挟み込んで前記中途部を固定し、  The curved member including the intermediate part is abutted against the fixing member so that the fixing member sandwiches the intermediate part together with the curved part, and a bent part is formed in the intermediate part by the fixing member and the curved part by abutment. , The intermediate part is sandwiched between the fixing member and the curved surface part by abutment, and the intermediate part is fixed.
前記光ファイバに対して前記光信号を入出力し、プローブファイバから入出力される前記光信号が前記光ファイバの前記側方から前記光ファイバに入出力されるように前記固定部材に前記プローブファイバを保持させ、  The optical fiber is input / output to / from the optical fiber, and the optical signal input / output from / to the probe fiber is input / output from the side of the optical fiber to / from the optical fiber. Hold
前記中途部を前記曲面部の曲面側溝部に載置し、  Placing the midway part in the curved surface side groove part of the curved surface part,
前記曲面部が前記固定部材に突き当たる際、前記固定部材の固定部に前記曲面側溝部に配設されている前記中途部を突き当て、突き当りによって前記曲面側溝部と前記固定部とによって前記中途部を挟み込んで固定し、  When the curved surface portion abuts against the fixing member, the midway portion disposed in the curved surface side groove portion is abutted against the fixing portion of the fixing member, and the midway portion is formed by the curved surface side groove portion and the fixing portion by abutment. Pinch and fix,
前記中途部が前記固定部に突き当たる際、前記曲面部と前記固定部材とが互いに位置決めされ、位置決めによって前記光ファイバと前記プローブファイバとが互いに光学的に結合するように、前記固定部の少なくとも一部を前記曲面側溝部に収容し、  When the midway portion abuts against the fixing portion, the curved surface portion and the fixing member are positioned relative to each other, and at least one of the fixing portions is optically coupled to each other by positioning. Part is accommodated in the curved side groove,
前記固定部の平面状の固定面部に前記中途部を突き当て、突き当てによって前記固定面部と前記曲面側溝部とで前記中途部を挟み込んで固定し、固定時に固定のために前記固定面部を前記曲面側溝部に収容し、  The intermediate portion is abutted against the flat fixed surface portion of the fixing portion, and the intermediate portion is sandwiched and fixed by the abutment between the fixing surface portion and the curved-surface side groove portion, and the fixing surface portion is fixed for fixing at the time of fixing. Housed in the curved side groove,
前記固定面部を前記曲面側溝部に収容するために前記固定面部の周囲を前記固定面部に対して傾斜している固定側傾斜面部によって窪ませ、  In order to accommodate the fixed surface portion in the curved surface side groove portion, the periphery of the fixed surface portion is recessed by a fixed inclined surface portion inclined with respect to the fixed surface portion,
前記曲面部を、円筒部の周面の一部に対して凸設されている凸部として形成し、  The curved surface portion is formed as a convex portion that is convex with respect to a part of the peripheral surface of the cylindrical portion,
前記曲面側溝部を、前記凸部に配設し、  The curved side groove portion is disposed on the convex portion,
前記曲面部の曲面側凸部は、前記曲面側溝部の両脇部に配設し、前記曲面側溝部の底部と前記円筒部の周面とに対して凸設させ、  The curved surface side convex portion of the curved surface portion is disposed on both sides of the curved surface side groove portion, and is protruded with respect to the bottom portion of the curved surface side groove portion and the peripheral surface of the cylindrical portion,
前記曲面側溝部の曲面側傾斜面部を、前記曲面側凸部の側面を兼ねさせ、  The curved surface side inclined surface portion of the curved surface side groove portion also serves as the side surface of the curved surface side convex portion,
台形形状の前記固定部を、前記固定部材の一端面に対して凸設させ、  The trapezoidal fixing portion is protruded with respect to one end surface of the fixing member,
前記固定面部を、台形の上面として機能させ、研磨し、  The fixed surface portion functions as a trapezoidal upper surface, polished,
前記固定側傾斜面部を、台形の側面として機能させ、  The fixed inclined surface portion functions as a trapezoidal side surface,
前記固定部を前記曲面側溝部に収容する際、前記固定側傾斜面部の少なくとも一部を、前記曲面側溝部の曲面側傾斜面部に当接させることを特徴とする光ファイバ側方入出力方法。  An optical fiber side input / output method, wherein when the fixing portion is accommodated in the curved surface side groove portion, at least a part of the fixed side inclined surface portion is brought into contact with the curved surface side inclined surface portion of the curved surface side groove portion.
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