JPH06281825A - Optical waveguide device and connecting structure for optical waveguide and optical fiber - Google Patents

Optical waveguide device and connecting structure for optical waveguide and optical fiber

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Publication number
JPH06281825A
JPH06281825A JP6809993A JP6809993A JPH06281825A JP H06281825 A JPH06281825 A JP H06281825A JP 6809993 A JP6809993 A JP 6809993A JP 6809993 A JP6809993 A JP 6809993A JP H06281825 A JPH06281825 A JP H06281825A
Authority
JP
Japan
Prior art keywords
optical waveguide
optical
optical fiber
output
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6809993A
Other languages
Japanese (ja)
Inventor
Toshimichi Yasuda
俊道 安田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to JP6809993A priority Critical patent/JPH06281825A/en
Publication of JPH06281825A publication Critical patent/JPH06281825A/en
Pending legal-status Critical Current

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  • Optical Couplings Of Light Guides (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To reduce trouble for optical axis alignment to half at the time of connecting an optical waveguide, and to install an optical waveguide device in a small space. CONSTITUTION:As for an optical waveguide substrate 1 and an optical fiber array substrate 5, respective one ends are allowed to abut on each other, and an optical waveguide 2 of a going path side, an optical waveguide 4 of a returning path side, and cores 8 of input side/output side optical fibers 6, 7 are allowed to coincide with each other and connected to each other, and light inputted to the optical waveguide 2 of the going path side from the optical fiber 6 of the input side is propagated to the optical waveguide 4 of the coming path side after the advance direction of the light is inverted by a bending part 3 of the optical waveguide. Also, in the optical waveguide 4, a branch part is formed, the light inputted to the optical waveguide 1 is allowed to branch finally into four pieces of optical waveguides and outputted to the optical fiber 7 of the output side from four pieces of output parts, respectively.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、光導波路と光ファイバ
との接続に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection between an optical waveguide and an optical fiber.

【０００２】[0002]

【従来技術】従来、光導波路に入力側と出力側の光ファ
イバを接続するには、図６のように光導波路基板１の一
方に入力側光ファイバ１９を、反対側に出力側光ファイ
バ２０を接続する構造であった。2. Description of the Related Art Conventionally, in order to connect an input side and an output side optical fiber to an optical waveguide, an input side optical fiber 19 is provided on one side of the optical waveguide substrate 1 and an output side optical fiber 20 is provided on the opposite side as shown in FIG. It was a structure to connect.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、光導波
路と光ファイバの接続においては、光軸を合わせるのに
非常に手間がかかり、従来技術では２箇所の接続部が存
在する。また、光導波路デバイスの両側に光ファイバが
接続され、光ファイバを大きな曲率で曲げることができ
ないため、このデバイスを設置するにはかなりのスペー
スを必要とするという問題点があった。However, in connecting the optical waveguide and the optical fiber, it takes a great deal of time to align the optical axes, and in the prior art, there are two connecting portions. Further, since the optical fiber is connected to both sides of the optical waveguide device and the optical fiber cannot be bent with a large curvature, there is a problem that a considerable space is required to install this device.

【０００４】本発明はこのような課題を解決するため
に、光導波路の接続において光軸合わせの手間を半減
し、光導波路デバイスを小スペースに設置できるように
することを目的とする。In order to solve such a problem, it is an object of the present invention to reduce the labor of optical axis alignment in the connection of optical waveguides by half and enable the optical waveguide device to be installed in a small space.

【０００５】[0005]

【課題を解決するための手段】本発明は上記課題を解決
するために、基板に入出力部が並設され、入力部から出
力部に至る往路と復路から成る光導波路が形成された光
導波路デバイスで、このような光導波路の途中に分岐、
合分波、フィルター、変調、スイッチ、増幅等の機能手
段を具備させた光導波路デバイスである。In order to solve the above-mentioned problems, the present invention provides an optical waveguide in which an input / output section is arranged in parallel on a substrate, and an optical waveguide consisting of a forward path and a return path from an input section to an output section is formed. In the device, branch in the middle of such an optical waveguide,
It is an optical waveguide device provided with functional means such as multiplexing / demultiplexing, filter, modulation, switch, and amplification.

【０００６】また、入力部と出力部とが並設され、前記
入力部から出力部に至る往路と復路から成る光導波路が
形成された光導波路基板と、入力側の光ファイバと出力
側の光ファイバが保持された光ファイバアレイ基板とが
具備されたことを特徴とする光導波路と光ファイバの接
続構造である。Further, an optical waveguide substrate in which an input section and an output section are provided in parallel and an optical waveguide consisting of a forward path and a return path from the input section to the output section is formed, an optical fiber on the input side and an optical fiber on the output side. An optical fiber array substrate holding fibers is provided, which is a connection structure for an optical waveguide and an optical fiber.

【０００７】[0007]

【実施例】図１は本発明の第１実施例を示す平面図であ
る。光導波路基板１と光ファイバアレイ基板５は一端が
当接されて、往路側の光導波路２、復路側の光導波路４
と入力側、出力側光ファイバ６、７のコア８がそれぞれ
一致して接続されおり、入力側の光ファイバ６から往路
側の光導波路２に入力された光は、光導波路の曲げ部３
で光の進行方向を反転させられ復路側の光導波路４に伝
搬される。さらに、光導波路４には分岐部が形成されて
おり、光導波路基板１に入力された光は最終的に４本の
光導波路に分岐されて４個の出力部からそれぞれ出力側
の光ファイバ７に出力される。このように、光導波路基
板１の一方向から入出力の両接続が行えるので、少ない
スペースでの接続が行える。また、光ファイバアレイ基
板５によって入力用と出力用の光ファイバ６、７の位置
決めがされたことにより、光導波路基板１と一端同士を
当接して入出力の両接続がされるので、光軸合わせの手
間が半減し、少ないスペースでの接続が行える。1 is a plan view showing a first embodiment of the present invention. One ends of the optical waveguide substrate 1 and the optical fiber array substrate 5 are in contact with each other, and the optical waveguide 2 on the forward path side and the optical waveguide 4 on the return path side are provided.
And the cores 8 of the input-side and output-side optical fibers 6 and 7 are connected so as to match with each other, and the light input from the input-side optical fiber 6 to the outgoing-side optical waveguide 2 is the bent portion 3 of the optical waveguide.
The traveling direction of the light is reversed by and is propagated to the optical waveguide 4 on the return path side. Further, a branch portion is formed in the optical waveguide 4, and the light input to the optical waveguide substrate 1 is finally branched into four optical waveguides, and the four output portions respectively output the optical fibers 7 on the output side. Is output to. In this way, since both input and output connections can be made from one direction of the optical waveguide substrate 1, connection can be made in a small space. Further, since the optical fibers 6 and 7 for input and output are positioned by the optical fiber array substrate 5, both ends of the optical waveguide substrate 1 are brought into contact with each other for both input and output connection. Connection work is halved, and connections can be made in a small space.

【０００８】図２は本発明の第２実施例を示す平面図
で、図３は光ファイバの接続方向からみた側面図であ
る。図１の光ファイバアレイ基板５を用いずに、光導波
路基板１の一端に光導波路の端部１２と光ファイバのコ
ア１１が一致するように形成した光ファイバ位置決め用
の溝９を設ける。この光ファイバ位置決め用溝を用いる
ことにより、光軸合わせの必要がなくなる。FIG. 2 is a plan view showing a second embodiment of the present invention, and FIG. 3 is a side view seen from the connecting direction of optical fibers. Instead of using the optical fiber array substrate 5 of FIG. 1, an optical fiber positioning groove 9 is formed at one end of the optical waveguide substrate 1 so that the end 12 of the optical waveguide and the core 11 of the optical fiber are aligned with each other. By using this optical fiber positioning groove, it is not necessary to align the optical axis.

【０００９】図４は本発明の第３実施例を示す平面図で
ある。光導波路内での光の進行方向を反転させるため、
光導波路の途中に反射部１３、１４を設ける。この反射
部は、エッチング等を用いて光導波路基板１に凹状部を
形成し反射面を構成する。さらに、その凹状部に金属や
光導波路の屈折率より小さい屈折率を有する物質を充填
しても良い。FIG. 4 is a plan view showing a third embodiment of the present invention. In order to reverse the traveling direction of light in the optical waveguide,
Reflectors 13 and 14 are provided in the middle of the optical waveguide. The reflecting portion forms a reflecting surface by forming a concave portion in the optical waveguide substrate 1 by using etching or the like. Further, the concave portion may be filled with a metal or a substance having a refractive index smaller than that of the optical waveguide.

【００１０】図５は本発明の第４実施例を示す平面図で
ある。光導波路内の光の進行方向の反転を行うため、光
導波路の曲げ部１５、１６と反射部１８を用いる。光導
波路２に入力された光が曲げ部１５に沿って伝搬し、光
導波路基板１の端面１７で反射され曲げ部１６を伝搬し
復路側の光導波路４に進む。この時、光導波路基板の端
面１７において伝搬してきた光が全反射条件を満たす角
度となっていれば反射部１８を設ける必要はないが、全
反射条件を満たさない場合は金属の蒸着等によって反射
部１８を設ける。FIG. 5 is a plan view showing a fourth embodiment of the present invention. In order to reverse the traveling direction of light in the optical waveguide, the bent portions 15 and 16 of the optical waveguide and the reflecting portion 18 are used. The light input to the optical waveguide 2 propagates along the bent portion 15, is reflected by the end surface 17 of the optical waveguide substrate 1, propagates through the bent portion 16, and travels to the optical waveguide 4 on the return path side. At this time, if the light propagated on the end face 17 of the optical waveguide substrate is at an angle satisfying the condition of total reflection, it is not necessary to provide the reflection portion 18, but if the condition of total reflection is not satisfied, it is reflected by vapor deposition of metal or the like. The part 18 is provided.

【００１１】以上のように、本発明によれば一方向から
入出力の両方の接続が行えるので、光軸合わせの手間が
半減し、小スペースで光導波路デバイスの設置が行え
る。また、上記実施例のように光導波路に分岐部を具備
させた場合には入出力部の数が多いので特に効果的であ
るが、もちろん他の機能を有する光導波路デバイス（例
えば、合分波、フィルター、変調、スイッチ、増幅等）
としても、同様の効果を得ることができる。As described above, according to the present invention, since both input and output can be connected from one direction, the labor for aligning the optical axis is reduced by half, and the optical waveguide device can be installed in a small space. Further, when the optical waveguide is provided with the branching portion as in the above-described embodiment, it is particularly effective because the number of input / output portions is large, but of course, an optical waveguide device having another function (for example, a multiplexing / demultiplexing device). , Filters, modulation, switches, amplification etc.)
Also, the same effect can be obtained.

【００１２】[0012]

【発明の効果】以上説明したように本発明は、基板に入
力部と出力部とが並設され、前記入力部から出力部に至
る往路と復路とから成る光導波路が形成されているの
で、一方向から入出力の両接続が行えて、光軸合わせの
手間が半減し、少ないスペースで接続が可能である。As described above, according to the present invention, the substrate is provided with the input section and the output section in parallel, and the optical waveguide formed of the forward path and the return path from the input section to the output section is formed. Both input and output connections can be made from one direction, and the labor for aligning the optical axis is halved, enabling connection in a small space.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の第１実施例の接続構造を示す平面図で
ある。FIG. 1 is a plan view showing a connection structure according to a first embodiment of the present invention.

【図２】本発明の第２実施例の接続構造を示す平面図で
ある。FIG. 2 is a plan view showing a connection structure according to a second embodiment of the present invention.

【図３】本発明の第２実施例の光導波路基板の側面図で
ある。FIG. 3 is a side view of an optical waveguide substrate according to a second embodiment of the present invention.

【図４】本発明の第３実施例の接続構造を示す平面図で
ある。FIG. 4 is a plan view showing a connection structure according to a third embodiment of the present invention.

【図５】本発明の第４実施例の接続構造を示す平面図で
ある。FIG. 5 is a plan view showing a connection structure according to a fourth embodiment of the present invention.

【図６】従来技術の接続構造を示す平面図である。FIG. 6 is a plan view showing a conventional connection structure.

【符号の説明】[Explanation of symbols]

１ 光導波路基板 ２、４ 光導波路 ３、１５、１６ 光導波路の曲げ部 ５ 光ファイバアレイ基板 ６、７、１０、１９、２０ 光ファイバ ８、１１ 光ファイバのコア ９ 光ファイバ位置決め用溝 １２ 光導波路の端部 １３、１４、１８ 光導波路の反射部 １７ 光導波路基板の端面 1 Optical Waveguide Substrate 2, 4 Optical Waveguides 3, 15, 16 Bent Part of Optical Waveguide 5 Optical Fiber Array Substrate 6, 7, 10, 19, 20 Optical Fiber 8, 11 Optical Fiber Core 9 Optical Fiber Positioning Groove 12 Optical End part of waveguide 13, 14, 18 Reflection part of optical waveguide 17 End face of optical waveguide substrate

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】基板に入力部と出力部とが並設され、前記
入力部から出力部に至る往路と復路とから成る光導波路
が形成され、前記光導波路には分岐あるいはスイッチ等
の機能手段が具備されていることを特徴とする光導波路
デバイス。1. An input section and an output section are arranged side by side on a substrate, and an optical waveguide consisting of a forward path and a return path from the input section to the output section is formed, and the optical waveguide has a functional means such as a branch or a switch. An optical waveguide device comprising: 【請求項２】入力部と出力部とが並設され、前記入力部
から出力部に至る往路と復路から成る光導波路が形成さ
れた光導波路基板と、入力側の光ファイバと出力側の光
ファイバが保持された光ファイバアレイ基板とが具備さ
れたことを特徴とする光導波路と光ファイバの接続構
造。2. An optical waveguide substrate in which an input section and an output section are arranged in parallel, and an optical waveguide consisting of a forward path and a return path from the input section to the output section is formed, an input side optical fiber and an output side optical fiber. An optical waveguide and optical fiber connection structure, comprising: an optical fiber array substrate holding fibers.
JP6809993A 1993-03-26 1993-03-26 Optical waveguide device and connecting structure for optical waveguide and optical fiber Pending JPH06281825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6809993A JPH06281825A (en) 1993-03-26 1993-03-26 Optical waveguide device and connecting structure for optical waveguide and optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6809993A JPH06281825A (en) 1993-03-26 1993-03-26 Optical waveguide device and connecting structure for optical waveguide and optical fiber

Publications (1)

Publication Number Publication Date
JPH06281825A true JPH06281825A (en) 1994-10-07

Family

ID=13363961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6809993A Pending JPH06281825A (en) 1993-03-26 1993-03-26 Optical waveguide device and connecting structure for optical waveguide and optical fiber

Country Status (1)

Country Link
JP (1) JPH06281825A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6122423A (en) * 1997-12-08 2000-09-19 Samsung Electronics Co., Ltd. Pigtailing method between optical waveguide device and optical fiber array
US6654523B1 (en) * 2001-08-10 2003-11-25 Lightwave Microsystems Corporation Optical alignment guide and method for aligning an optical fiber array with an optical integrated circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6122423A (en) * 1997-12-08 2000-09-19 Samsung Electronics Co., Ltd. Pigtailing method between optical waveguide device and optical fiber array
US6654523B1 (en) * 2001-08-10 2003-11-25 Lightwave Microsystems Corporation Optical alignment guide and method for aligning an optical fiber array with an optical integrated circuit

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