JPS6038074B2 - Optical exchange method - Google Patents
Optical exchange methodInfo
- Publication number
- JPS6038074B2 JPS6038074B2 JP53126082A JP12608278A JPS6038074B2 JP S6038074 B2 JPS6038074 B2 JP S6038074B2 JP 53126082 A JP53126082 A JP 53126082A JP 12608278 A JP12608278 A JP 12608278A JP S6038074 B2 JPS6038074 B2 JP S6038074B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical
- receiving
- pieces
- row
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
- H04Q3/526—Optical switching systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Optical Communication System (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Description
【発明の詳細な説明】
本発明は光フアィバ通信システム、特に光フアィバ利用
の電話における光交換方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical fiber communication system, and more particularly to an optical switching system in a telephone using optical fiber.
光フアィバは資源的に豊富な桂素材料を主材料としてお
り、軽量である（従来のケブルの１％以下の重量である
）、紬径である、可榛性が優れている等の特徴を有し、
この光フアィバを伝送路とする光フアィバ通信は、低損
失である、伝送帯域が広い、無議導無濠話である（普通
の金属線導体に必要な変圧器絶縁およびケーブル遮蔽が
不必要である）等の長所を有する。Optical fiber is mainly made of Katsura material, which is a rich resource, and has characteristics such as being lightweight (less than 1% of the weight of conventional cables), having a pongee diameter, and having excellent flexibility. have,
Optical fiber communication using this optical fiber as a transmission path has low loss, wide transmission band, and is conductor-free (no need for transformer insulation and cable shielding required for ordinary metal wire conductors). It has the following advantages:
このため光フアイバ通信の利用開発が近年急激に行われ
、最近では実験室段階から現場試験段階へ、更には実用
段階へと進んでいる。ところで光フアィバ通信システム
を電話に使用する場合、音声信号を電気信号に変換し、
そしてその電気信号を半導体レーザ、発光ダイオード等
によって光信号へと変換して伝送する。For this reason, the use and development of optical fiber communications has been rapidly carried out in recent years, and has recently progressed from the laboratory stage to the field test stage and then to the practical stage. By the way, when using an optical fiber communication system for telephone, voice signals are converted into electrical signals,
Then, the electrical signal is converted into an optical signal using a semiconductor laser, a light emitting diode, etc., and then transmitted.
そして交換点において従来では光信号を再び電気信号に
変換してから交換を行い、交換後電気信号を再度光信号
に変換して伝送している。このような交換方式では光通
信システムの長所、例えば無漏話であること、が矢なわ
れるし、構造的にも複雑になる。前述のような交換方式
の欠点を除去するために送信されてきた光信号を電気信
号に変換することなく、レンズとミラーを使用して光信
号のまま交換することが提案された。Conventionally, at the exchange point, the optical signal is converted back into an electrical signal before the exchange is performed, and after the exchange, the electrical signal is converted back into an optical signal and transmitted. Such a switching method compromises the advantages of optical communication systems, such as non-crosstalk, and also becomes structurally complex. In order to eliminate the drawbacks of the above-mentioned exchange methods, it has been proposed to exchange transmitted optical signals as they are using lenses and mirrors without converting them into electrical signals.
しかしながらこの方式では非常に多数のレンズおよびミ
ラーが必要であり、しかもそれらは精巧なものでなくて
はならない。そのためこれらの部品代が高価であり、こ
の方式は経済的ではない。本発明は光フアィバ通信シス
テムにおける従来の交換方式の欠点を除去し、簡単な構
造で、コンパクトで且つ安価な光交換方式を提供するこ
とを目的とするものである。However, this method requires a large number of lenses and mirrors, and they must be sophisticated. Therefore, these parts are expensive, and this method is not economical. SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of conventional switching systems in optical fiber communication systems and to provide an optical switching system that is simple in structure, compact, and inexpensive.
本発明の光交換方式は、細切れの多数の光フアィバ片を
それらの鞄線が行又は列方向と一致するようにしてマト
リックス状に配列し、光フアィバ片の藤線方向の行又は
列に送信側又は受信側の光フアィバを固定的に整列設置
し、更に前記光フアィバ片の軸線と交差する方向の各列
間又は各行間の間隙に、受信側又は送信側の光フアィバ
をその間隙に沿って移動可能に配列し、該移動可能な光
フアィバの先端は、斜めに４５ｏに切断され、該切断面
が鏡面加工してあることを特徴とするものである。In the optical switching system of the present invention, a large number of finely divided optical fiber pieces are arranged in a matrix shape so that their bag lines coincide with the row or column direction, and the optical fibers are transmitted in the rows or columns in the wavi line direction of the optical fiber pieces. side or receiving side optical fibers are fixedly aligned and installed, and furthermore, the receiving side or transmitting side optical fibers are installed along the gaps between each column or each row in a direction intersecting the axis of the optical fiber pieces. The distal ends of the movable optical fibers are cut diagonally at an angle of 45 degrees, and the cut surfaces are mirror-finished.
本発明の光交換方式によれば、送信側の光フアィバがｎ
本であれば受信側の光フアィバもｎ本必要であり、従っ
て光フアィバ片はｎ×（ｎ−１）個のマトリックス状に
配置される。According to the optical switching system of the present invention, the transmitting side optical fiber is n
In the case of a book, n optical fibers are required on the receiving side, so the optical fiber pieces are arranged in a matrix of n×(n-1) pieces.
光フアイバ片マトリックスと固定の光フアィバ（例えば
送信側の光フアィバ）とを同一平面（例えば水平面）内
に鰯遣した場合、移動可能な光フアィバ（受信側の光フ
アィバ）は前記平面と交差する平面（例えば垂直平面）
内に配置するのが好ましい。このような配列にすれば交
信中の送受信の光フアィバの光路中に他の光フアィバが
介入しない。以下添付図面に示した本発明の光交換方式
の実施例に基いて本発明を詳細に説明する。When a matrix of optical fiber strips and a fixed optical fiber (e.g., an optical fiber on the transmitting side) are laid out in the same plane (e.g., a horizontal plane), the movable optical fiber (optical fiber on the receiving side) intersects said plane. plane (e.g. vertical plane)
It is preferable to place it within. With this arrangement, other optical fibers will not intervene in the optical path of the transmitting and receiving optical fibers during communication. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on embodiments of the optical switching system of the present invention shown in the accompanying drawings.
第１図は本発明の光交換方式を説明するための説明図で
ある。FIG. 1 is an explanatory diagram for explaining the optical switching system of the present invention.
第２図は本発明の一実施例の斜視図である。FIG. 2 is a perspective view of one embodiment of the present invention.
第１図において送信側光フアィバｆがｎ本あり、同じく
受信側光フアイバｆ′もｎ本ある。光フアィバを細切れ
にした光フアィバ片１０はｎ×（ｎ−１）個あり、夫々
適当な間隔をあげてｎ行（ｎ−１）列のマトリックス状
に配列される。この場合、各行における複数個の光フア
ィバ片１０の光軸が一直線をなすようにして各光フアィ
バ片１川ま配置される。また送信側の各光フアィバｆ，
，……，ｆｎはそれぞれ光フアィバ片マトリックスの各
行の光フアィバ片の光軸とその光藤が一致するようにし
て固定的に設置される。受信側の各光フアィバｆ′，，
・・・・・・，ｆ′ｎは光フアィバ片マトリックスの各
列間の間隙に、列方向に移動可能に設置される。受信側
の光フアィバｆ′の先端は４５０に切断研摩され、この
斜面はアルミ蒸着等の適宜な手段により鏡面仕上加工さ
れている。従って送信側光フアィバからきた光が光フア
イバ片を通過して前記斜面３に入射すると、その光の進
行方向は９００曲げられ、その結果その光はその受信側
光フアイバｆ′内を進行することになる。本発明の光交
換方式の原理を説明する。In FIG. 1, there are n optical fibers f on the transmitting side and n optical fibers f' on the receiving side. There are n×(n-1) optical fiber pieces 10, each of which is an optical fiber cut into pieces, and arranged in a matrix of n rows and (n-1) columns with appropriate spacing between them. In this case, the optical fibers 10 in each row are arranged so that their optical axes are aligned in a straight line. Also, each optical fiber f on the transmitting side,
, . . . , fn are fixedly installed so that the optical axes of the optical fibers in each row of the optical fiber matrix coincide with the optical fibers thereof. Each optical fiber f′, , on the receiving side
..., f'n are installed in the gaps between each row of the optical fiber piece matrix so as to be movable in the row direction. The tip of the optical fiber f' on the receiving side is cut and polished to a 450 mm diameter, and this slope is polished to a mirror finish by an appropriate means such as aluminum vapor deposition. Therefore, when the light coming from the transmitting optical fiber passes through the optical fiber piece and enters the slope 3, the traveling direction of the light is bent by 900 degrees, and as a result, the light travels within the receiving optical fiber f'. become. The principle of the optical switching system of the present invention will be explained.
或る送信側光フアィバと或る受信側光フアィバとを接続
する場合受信側光フアイバの先端の斜面がその送信側光
フアィバの位置する光フアィバ片マトリックスの行に一
致するまで受信側光ファイバを移動させればよい。When connecting a transmitting optical fiber and a receiving optical fiber, connect the receiving optical fiber until the slope of the tip of the receiving optical fiber matches the row of the optical fiber matrix where the transmitting optical fiber is located. Just move it.
例えばもし電話Ａの送信側および受信側光フアィバがそ
れぞれＬ，ｆ′，であり、亀話Ｂの送信側および受信脚
光フアイバがそれぞれも，ｆ′２であるとして、今電話
Ａと鰭話Ｂとを接続する場合は次のようにする。すなわ
ち電話Ａの受信側光フアィバｆ′，の先端が光フアィバ
片２１の端面と一致するまで前記光フアィバ片ｆ′，を
移動し、他方電話Ｂの受信側光フアィバｆ′２の先端が
光フアィバ片１１と光フアィバ片１２との間に位置する
まで前記光フアィバｆ′２を移動する。このようにして
電話Ａの送信側光フアィバｆ，から送られて来た光信号
は光フアィバ片１（ｎ−１），・・・・・・１３，１２
を通って電話Ｂの受信側光フアィバｆ′２の先端に入り
、鏡面仕上げの斜面３で反射して受信側光フアィバｆ′
２内を進み、電話Ｂに達する。また電話Ｂからの光信号
は送信脚光フアィバｆ２を通り、更に光フアィバ片２（
ｎ−１），・・・・・・，２２，２１を通って、電話Ａ
の受信用光フアィバｆ′，に送られる。第２図は本発明
の−実施例を示すものである。For example, if the transmitting and receiving optical fibers of telephone A are L and f', respectively, and the transmitting and receiving fibers of telephone B are f'2, then telephone A and telephone B To connect, do the following: That is, the optical fiber piece f' is moved until the tip of the receiving optical fiber f' of telephone A coincides with the end face of the optical fiber piece 21, and the tip of the receiving optical fiber f'2 of telephone B is brought into contact with the optical fiber piece 21. The optical fiber f'2 is moved until it is located between the fiber piece 11 and the optical fiber piece 12. In this way, the optical signals sent from the transmission side optical fiber f of telephone A are optical fiber pieces 1 (n-1), . . . 13, 12
It enters the tip of the receiving optical fiber f'2 of telephone B, is reflected by the mirror-finished slope 3, and enters the receiving optical fiber f'
2 and reach Phone B. Also, the optical signal from telephone B passes through the transmission leg fiber f2, and further passes through the optical fiber piece 2 (
n-1), ..., 22, 21, telephone A
is sent to the receiving optical fiber f'. FIG. 2 shows an embodiment of the invention.
第２図において多数の光フアィバ片１０が受台１に設け
たＶ溝２の中に受容されている。多数本のＶ溝２は互に
平行であり、Ｖ溝２の中で各光フアィバ片１０は隣接す
る光フアイバ片と所定の間隔をあげてマトリックス状に
配置される。またＶ溝２には送信側（又は受信側）光フ
アィバｆ（図示せず）が配置される。更に受台１に対し
て垂直方向に受信側光フアィバｆ′が配置される。この
受信側光フアィバは図示しない適宜な支持機構によって
支持され、また同じく図示しない適宜なスライド機構に
よって、好ましくは垂直方向ａおよび光フアィバ片の間
隙に沿って水平方向ｂに移動される。前記スライド機構
にはパルスモータ又はリニアモ−夕を用いて、位置制御
信号により前記モータを制御駆動して光フアィバを所望
の位置へと移動させる。In FIG. 2, a number of optical fiber pieces 10 are received in V-grooves 2 provided in a pedestal 1. As shown in FIG. A large number of V-grooves 2 are parallel to each other, and within the V-grooves 2, each optical fiber piece 10 is arranged in a matrix shape with a predetermined interval between adjacent optical fiber pieces. Further, a transmitting side (or receiving side) optical fiber f (not shown) is arranged in the V-groove 2. Furthermore, a receiving side optical fiber f' is arranged in a direction perpendicular to the pedestal 1. The receiving optical fiber is supported by a suitable support mechanism (not shown) and is preferably moved in the vertical direction (a) and in the horizontal direction (b) along the gap between the optical fiber pieces by a suitable sliding mechanism (also not shown). A pulse motor or a linear motor is used for the slide mechanism, and the motor is controlled and driven in response to a position control signal to move the optical fiber to a desired position.
各光フアィバｆ′１こ対して１個のモータを設置すれば
瞬時に所望の送信側光フアィバｆと受信側光フアィバｆ
′とを接続することができる。或はモータ自体を例えば
左右に移動可能に設けて、１個のモータによって多数本
の光フアィバを順次移動させるようにすればコンパクト
な設計となる。この場合光フアィバの支持機構およびス
ライド機構に電磁石を利用して結合・切離しを行うこと
も可能である。光フアィバ片の長さは約１肋乃至５００
Ａ程度が好ましく、各光フアィバ片間の間隙は光フアィ
バの太さ程度とするのが好ましい。If one motor is installed for each optical fiber f'1, the desired transmitting optical fiber f and receiving optical fiber f can be instantly connected.
′ can be connected. Alternatively, a compact design can be achieved by providing the motor itself so that it can move, for example, left and right, so that a large number of optical fibers can be sequentially moved by one motor. In this case, it is also possible to couple and disconnect by using electromagnets in the optical fiber support mechanism and slide mechanism. The length of the optical fiber piece is about 1 rib to 500
It is preferable that the gap is about A, and the gap between each optical fiber piece is preferably about the thickness of the optical fiber.
例えば光フアイバの太さが１５０〜２００＃ならば、間
隔は２００一程度である。間隔が大きいと光損失が大き
いからである。また光フアィバ片は一括研磨法で作るの
が便利である。光フアィバ片間の間隙がフアィバ蚤程度
である場合、間隙１ケ所当りの光の損失は０．粒Ｂ程度
であるが、光フアィバ片の列を屈折率マッチング液等に
浸すか、若しくは光フアィバ片の両端面に無反射コート
を施こせば、間隙１ケ所当りの光損失を０．０＆Ｂ以下
とすることができる。For example, if the thickness of the optical fiber is 150 to 200#, the spacing is about 200mm. This is because the larger the distance, the greater the optical loss. Furthermore, it is convenient to make the optical fiber pieces by a batch polishing method. When the gap between the optical fiber pieces is about the size of a fiber flea, the loss of light per gap is 0. Although it is about the size of grain B, if the row of optical fiber pieces is immersed in a refractive index matching liquid or a non-reflective coating is applied to both end faces of the optical fiber pieces, the optical loss per gap can be reduced to 0.0&B or less. It can be done.
第２図の実施例では受信側光フアイバｆ′を受台に対し
て垂直に配置したが、受台１に対して斜め方向としても
、同様に交信中の送受信の光ファイバの光路中に他の受
信脚光フアィバが介入しない。In the embodiment shown in FIG. 2, the receiving side optical fiber f' is arranged perpendicularly to the pedestal, but it may also be placed obliquely to the pedestal 1. The receiving spotlight fiber does not intervene.
本発明によれば従来の光フアィバ通信システムに異なっ
て、交換時に光信号を一時的に電気信号に変換する必要
がなく、光信号のまま送信側と受信脚光フアィバを持続
できる。According to the present invention, unlike conventional optical fiber communication systems, there is no need to temporarily convert an optical signal into an electrical signal at the time of exchange, and the optical signal can be maintained between the transmitting side and the receiving optical fiber as it is.
また本発明によればレンズ、ミラー等を使用しておらず
、単に光フアィバの先端を斜めに切り、該斜面に鏡面加
工を施こすだけでよいから安価に製造できる。図面の簡
単な説明第１図は本発明の光交換方式を説明するための
説明図である。Further, according to the present invention, no lenses, mirrors, etc. are used, and the tip of the optical fiber is simply cut diagonally and the sloped surface is mirror-finished, so it can be manufactured at low cost. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram for explaining the optical switching system of the present invention.
第２図は本発明の光交換方式の一実施例の斜視図である
。１……受台、２……Ｖ溝、３……光ファィバの斜面、
１０・・・・・・光フアィバ片、ｆ・・・・・・送信側
光フアィバ、ｆ′・・・・・・受信側光フアィバ。FIG. 2 is a perspective view of an embodiment of the optical switching system of the present invention. 1... pedestal, 2... V groove, 3... optical fiber slope,
10... Optical fiber piece, f... Sending side optical fiber, f'...... Receiving side optical fiber.
Claims (1)
は列方向と一致するようにしてマトリツクス状に配列し
、該フアイバ片の軸線方向の行又は列に送信側又は受信
側の光フアイバを固定的に整列設置し、前記光フアイバ
片の軸線と交差する方向の各列間又は各行間の間隙に受
信側又は送信側の光フアイバをその間隙に沿つて移動可
能に配列し、該移動可能な光フアイバの先端が斜めに切
断され、該切断面が鏡面加工してあることを特徴とする
光交換方式。1 Arranging a large number of finely divided optical fiber pieces in a matrix so that their axes coincide with the row or column direction, and fixing optical fibers on the transmitting side or receiving side in the rows or columns in the axial direction of the fiber pieces. The optical fibers on the receiving side or the transmitting side are arranged in the gaps between each column or each row in the direction intersecting the axis of the optical fiber pieces so as to be movable along the gaps. An optical exchange system characterized in that the tip of the optical fiber is cut diagonally and the cut surface is mirror-finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53126082A JPS6038074B2 (en) | 1978-10-16 | 1978-10-16 | Optical exchange method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53126082A JPS6038074B2 (en) | 1978-10-16 | 1978-10-16 | Optical exchange method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5553951A JPS5553951A (en) | 1980-04-19 |
| JPS6038074B2 true JPS6038074B2 (en) | 1985-08-29 |
Family
ID=14926151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53126082A Expired JPS6038074B2 (en) | 1978-10-16 | 1978-10-16 | Optical exchange method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038074B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63190543A (en) * | 1987-01-30 | 1988-08-08 | Copal Electron Co Ltd | Inner rotor type dc brushless motor |
-
1978
- 1978-10-16 JP JP53126082A patent/JPS6038074B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63190543A (en) * | 1987-01-30 | 1988-08-08 | Copal Electron Co Ltd | Inner rotor type dc brushless motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5553951A (en) | 1980-04-19 |
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