JPH02682B2 - - Google Patents
Info
- Publication number
- JPH02682B2 JPH02682B2 JP54063967A JP6396779A JPH02682B2 JP H02682 B2 JPH02682 B2 JP H02682B2 JP 54063967 A JP54063967 A JP 54063967A JP 6396779 A JP6396779 A JP 6396779A JP H02682 B2 JPH02682 B2 JP H02682B2
- Authority
- JP
- Japan
- Prior art keywords
- subscriber
- photodetector
- optical
- call
- optical signal
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3586—Control or adjustment details, e.g. calibrating
- G02B6/3588—Control or adjustment details, e.g. calibrating of the processed beams, i.e. controlling during switching of orientation, alignment, or beam propagation properties such as intensity, size or shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/351—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements
- G02B6/3512—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror
- G02B6/3514—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror the reflective optical element moving along a line so as to translate into and out of the beam path, i.e. across the beam path
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Optical Communication System (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Description
【発明の詳細な説明】
本発明は光通信に用いられる光交換機に関す
る。光フアイバを伝送路に用いた光通信は現在開
発段階にあるが、光フアイバが誘導雑音を全く受
けないで高信頼度の伝送ができること、光フアイ
バの広帯域性を利用してその単位断面積当り多量
の情報が伝送できることなどの利点を有すること
から将来多用されるものと予想されている。この
光通信をシステム化する場合は現在の電気通信と
同様に交換機が必要となる。このため現在、光交
換機は種々考案されつつあるが、加入者からの起
呼・終呼の信号を検出する装置が未開発である。
従つてこの開発が要請されており本発明はこの要
請に基づいて案出されたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical switch used for optical communications. Optical communications using optical fibers as transmission paths are currently in the development stage, but optical fibers are capable of highly reliable transmission without any induced noise, and take advantage of the broadband properties of optical fibers to improve the performance per unit cross-sectional area. It is expected that it will be widely used in the future because it has the advantage of being able to transmit a large amount of information. If this optical communication is to be systematized, a switch will be required, similar to current telecommunications. For this reason, various types of optical switching equipment are currently being devised, but devices for detecting call origination and call termination signals from subscribers have not yet been developed.
Therefore, this development is required, and the present invention was devised based on this request.
このため本発明においては、一部光を透過する
ミラーを複数個マトリクス状に配例してなる通話
路接続用光スイツチにおいて、
加入者からの起呼および終呼に応じた光信号を
検出するための光検出器が各加入者に対応して設
けられ、加入者の起呼に応じた光信号が対応する
光検出器に直接入力されるようになつており、前
記光検出器による加入者の起呼の検出により前記
加入者と被呼加入者との光信号通話路を接続する
ように対応する前記ミラーを駆動し、かつ前記ミ
ラーを透過した加入者からの光信号の一部を前記
光検出器で監視し、前記加入者からの光信号が消
失したことによる終呼を前記光検出器で検出した
ときは前記ミラーを元の状態に復旧することを特
徴とするものである。 Therefore, in the present invention, optical signals corresponding to call origination and call termination from a subscriber are detected in an optical switch for connecting a communication path, which is made up of a plurality of mirrors arranged in a matrix that partially transmit light. A photodetector is provided corresponding to each subscriber, and an optical signal in response to a subscriber's call is directly input to the corresponding photodetector. Detecting a call from the subscriber drives the corresponding mirror to connect an optical signal path between the subscriber and the called subscriber, and transmits a portion of the optical signal from the subscriber that has passed through the mirror to the called subscriber. The mirror is monitored by a photodetector, and when the photodetector detects a call termination due to disappearance of an optical signal from the subscriber, the mirror is restored to its original state.
以下、添付図面に基づいて本発明の実施例につ
き詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings.
第１図に実施例の構成図を示す。図において１
は加入者、２は通話路接続用光スイツチ、３は光
フアイバケーブル、４は制御回路４であつて、加
入者１と通話路接続用光スイツチ２とは光フアイ
バケーブル３により結ばれている。また通話路接
続用光スイツチ２は１部光を透過するミラー５を
有する光スイツチの複数個を、行X0〜Xoと列Y0
〜Yoを交差させた交点に配置し、その行X0〜Xo
を加入者１よりの光フアイバケーブル３に接続
し、列Y0〜Yoを光フアイバケーブル６により他
局の交換機に接続するようにしたもので、各行
X0〜Xoの末端に本発明の要点である光検出器７
を設けている。この光検出器７の出力は制御回路
４に接続され、制御回路４は通話路接続用光スイ
ツチ２に接続している。 FIG. 1 shows a configuration diagram of an embodiment. In the figure 1
2 is a subscriber, 2 is an optical switch for connecting the communication line, 3 is an optical fiber cable, and 4 is a control circuit 4, and the subscriber 1 and the optical switch 2 for communication line connection are connected by the optical fiber cable 3. . Further, the communication path connection optical switch 2 has a plurality of optical switches each having a mirror 5 that partially transmits light, arranged in rows X 0 to X o and column Y 0 .
~Y o placed at the intersection of the intersecting lines X 0 ~ X o
is connected to the optical fiber cable 3 from subscriber 1, and columns Y 0 to Y o are connected to the exchange of another station via optical fiber cable 6.
A photodetector 7, which is the main point of the present invention, is installed at the end of X 0 to X o.
has been established. The output of this photodetector 7 is connected to a control circuit 4, and the control circuit 4 is connected to the optical switch 2 for connecting the communication path.
このように構成された本発明の通話路接続用光
スイツチの動作について次に説明する。 The operation of the communication path connecting optical switch of the present invention constructed in this manner will be described next.
通話路接続用光スイツチ２は加入者１からの起
呼がない場合はＸ行とＹ列の接続を行なわないた
め、ミラー５を制御回路４により下方にさげてお
り、光検出器７は加入者１からの起呼が起るのを
待期している。加入者１が受話器を取り上げると
起呼の光信号が送出され、光フアイバケーブル３
を通つて通話路接続用光スイツチ２に送られた光
検出器７に入力される。光検出器７はこの起呼の
光信号を電気信号に変換して制御回路４に入力す
る。制御回路４はこの情報により必要なミラー５
を上げてＸ行とＹ列の接続を行なうのである。即
ち加入者と被呼加入者との光信号通話路を接続す
るのである。また本通話路接続用光スイツチには
一部透過形のミラーを使用しているためＸ行とＹ
列を接続していても、光検出器７はミラー５を通
して光信号を受信することができるので加入者１
からの終呼も検出することが可能である。なお通
話路接続用光スイツチの入力端および出力端にレ
ンズ８および９を用い光ビームを整形することに
より低損失化が可能である。 Since the communication path connection optical switch 2 does not connect the X row and Y column when there is no call from the subscriber 1, the mirror 5 is lowered by the control circuit 4, and the photodetector 7 is not connected. Waiting for person 1 to call. When subscriber 1 picks up the handset, a calling optical signal is sent out and optical fiber cable 3
The signal is inputted to the photodetector 7 which is sent to the optical switch 2 for connecting the communication path through the signal line. The photodetector 7 converts this calling optical signal into an electrical signal and inputs it to the control circuit 4. The control circuit 4 uses this information to select the necessary mirror 5.
The connection between the X row and the Y column is made by raising the . That is, it connects the optical signal communication path between the subscriber and the called subscriber. In addition, since the optical switch for connecting this communication path uses a partially transparent mirror,
Even if the columns are connected, the photodetector 7 can receive the optical signal through the mirror 5, so the subscriber 1
It is also possible to detect termination of calls from. Note that it is possible to reduce the loss by shaping the light beam using lenses 8 and 9 at the input and output ends of the optical switch for connecting the communication path.
以上説明した如く本発明は一部透過形ミラーを
用いた通話路接続用光スイツチに光検出器を組み
込むことにより加入者の起呼および終呼を簡単に
検出できる光交換機を小型に構成することを可能
にしたものである。 As explained above, the present invention provides a compact optical exchange that can easily detect call origination and call termination by incorporating a photodetector into an optical switch for connecting communication paths using a partially transmissive mirror. This is what made it possible.
第１図は本発明にかかる実施例の通話路接続用
光スイツチの構成図である。
１……加入者、２……通話路接続用光スイツ
チ、３，６……光フアイバケーブル、４……制御
回路、５……一部透過形ミラー、７……光検出
器。
FIG. 1 is a block diagram of an optical switch for connecting a communication path according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Subscriber, 2...Optical switch for communication line connection, 3, 6...Optical fiber cable, 4...Control circuit, 5...Partial transmission mirror, 7...Photodetector.
Claims (1)
状に配例してなる通話路接続用光スイツチにおい
て、 加入者からの起呼および終呼に応じた光信号を
検出するための光検出器が各加入者に対応して設
けられ、加入者の起呼に応じた光信号が対応する
光検出器に直接入力されるようになつており、前
記光検出器による加入者の起呼の検出により前記
加入者と被呼加入者との光信号通話路を接続する
ように対応する前記ミラーを駆動し、かつ前記ミ
ラーを透過した加入者からの光信号の一部を前記
光検出器で監視し、前記加入者からの光信号が消
失したことによる終呼を前記光検出器で検出した
ときは前記ミラーを元の状態に復旧することを特
徴とする通話路接続用光スイツチ。[Scope of Claims] 1. In an optical switch for connecting a communication line, which includes a plurality of mirrors arranged in a matrix that partially transmit light, an optical signal corresponding to the origination and termination of a call from a subscriber is detected. A photodetector is provided corresponding to each subscriber, and an optical signal in response to a subscriber's call is directly input to the corresponding photodetector. Detecting a call from the subscriber drives the corresponding mirror to connect an optical signal path between the subscriber and the called subscriber, and transmits a portion of the optical signal from the subscriber that has passed through the mirror to the called subscriber. A light for connecting a communication line, characterized in that the light is monitored by a photodetector, and when the photodetector detects a termination of a call due to disappearance of an optical signal from the subscriber, the mirror is restored to its original state. Switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6396779A JPS55156902A (en) | 1979-05-25 | 1979-05-25 | Partly transmittable mirror channel-connecting photo switch having photodetector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6396779A JPS55156902A (en) | 1979-05-25 | 1979-05-25 | Partly transmittable mirror channel-connecting photo switch having photodetector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55156902A JPS55156902A (en) | 1980-12-06 |
| JPH02682B2 true JPH02682B2 (en) | 1990-01-09 |
Family
ID=13244568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6396779A Granted JPS55156902A (en) | 1979-05-25 | 1979-05-25 | Partly transmittable mirror channel-connecting photo switch having photodetector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55156902A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381881A (en) * | 1980-05-27 | 1983-05-03 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Fiber optic crossbar switch for automatically patching optical signals |
| JPS6051342A (en) * | 1983-08-31 | 1985-03-22 | Fujitsu Ltd | Optical communication system between processors |
| FR2602595B1 (en) * | 1986-08-06 | 1989-07-28 | Cit Alcatel | OPTICAL SWITCH FOR AUTOMATIC MAINTENANCE AND SECURITY OF MULTIMODE OPTICAL LINKS |
| US7400790B2 (en) | 2004-11-03 | 2008-07-15 | Hewlett-Packard Development Company, L.P. | Optical connections and methods of forming optical connections |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS525209B2 (en) * | 1972-07-28 | 1977-02-10 | ||
| JPS5535366A (en) * | 1978-09-06 | 1980-03-12 | Nippon Telegr & Teleph Corp <Ntt> | Photo switch |
-
1979
- 1979-05-25 JP JP6396779A patent/JPS55156902A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55156902A (en) | 1980-12-06 |
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