JPH03126334A - Optical transmission line duplexing system - Google Patents
Optical transmission line duplexing systemInfo
- Publication number
- JPH03126334A JPH03126334A JP1265531A JP26553189A JPH03126334A JP H03126334 A JPH03126334 A JP H03126334A JP 1265531 A JP1265531 A JP 1265531A JP 26553189 A JP26553189 A JP 26553189A JP H03126334 A JPH03126334 A JP H03126334A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- switch
- conversion circuit
- transmission line
- electrical
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 87
- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光伝送路２重化方式に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a duplex optical transmission line system.
従来、この種の光伝送路２重化方式は、第２図に示すよ
うに、第１の電気−光変換回路１と、第１の光伝送路３
と、第１の光−電気変換回路９からなる光伝送系列と、
第２の電気−光変換回路と、第２の光伝送路４と、第２
の光−電気変換回路１０からなる光伝送系列を送信部ス
イッチ１１と受信部スイッチ１２で切り替えて運用する
形式がとられていた。Conventionally, as shown in FIG. 2, this type of optical transmission line duplication system has a first electrical-to-optical conversion circuit 1 and a first optical transmission line 3.
and an optical transmission line consisting of a first optical-to-electrical conversion circuit 9;
a second electrical-optical conversion circuit, a second optical transmission line 4, and a second electrical-optical conversion circuit;
An optical transmission system consisting of an optical-to-electrical conversion circuit 10 was switched and operated by a transmitter switch 11 and a receiver switch 12.
上述した従来の光伝送路２重化方式では、送信側と受信
側の切替スイッチが正常に動作しながった場合には信号
が通らなくなり、かつ、第１の電気−光変換器１と第２
の光−電気変換回路２が故障した場合には送信側と受信
側に正常なユニットがあるにもかかわらず光伝送路３．
４ともにデータが通らないという欠点がある。In the conventional optical transmission line duplication method described above, if the changeover switch on the transmitting side and the receiving side does not operate normally, the signal will not pass, and the first electrical-to-optical converter 1 Second
If the optical-to-electrical conversion circuit 2 of the optical transmission line 3 fails, even though there are normal units on the transmitting and receiving sides.
Both methods have the disadvantage that data cannot be passed through them.
本発明の光伝送路２重化方式は、共通の電気信号を入力
とする第１の電気−光変換回路と、第２の電気−光変換
回路と、前記第１の電気−光変換回路に接続される第１
の光伝送路と、前記第２の電気−光変換回路に接続され
る第２の光伝送路と、前記第１の光伝送路と接続される
第１の光分岐器と、前記第２の光伝送路と接続される第
２の光分岐器と、前記第１の光分岐器の一方の出力及び
第２を光分岐器の一方の出力と接続され外部からの制御
信号によってスイッチングさせる第１の光スイッチと、
前記第１の光分岐器の他方の出力及び第２の光分岐器の
他方の出力と接続され外部からの制御信号によってスイ
ッチングされる第２の光スイッチと、前記第１の光スイ
ッチと接続される第１の光−電気変換回路と、前記第２
の光スイッチと接続される第２の光−電気変換回路とを
備えて構成される。The optical transmission line duplication system of the present invention includes a first electrical-to-optical conversion circuit, a second electrical-to-optical conversion circuit, and a second electrical-to-optical conversion circuit that receives a common electrical signal as input. 1st connected
a second optical transmission line connected to the second electrical-to-optical conversion circuit, a first optical splitter connected to the first optical transmission line, and a second optical transmission line connected to the second electrical-optical conversion circuit; a second optical branching device connected to the optical transmission line; and a first optical branching device connected to one output of the optical branching device and switching one output of the first optical branching device and the second optical branching device to one output of the optical branching device. light switch and
a second optical switch connected to the other output of the first optical splitter and the other output of the second optical splitter and switched by an external control signal; and a second optical switch connected to the first optical switch. a first optical-to-electrical conversion circuit;
and a second optical-to-electric conversion circuit connected to the optical switch.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の光伝送路２重化方式の一実施例の構成
図である。第１の電気−光変換回路１と第１の電気−光
変換回路２は共通の電気信号たる入力信号１０１を入力
として、それぞれ第１及び第２の光伝送路３及び４に光
信号を出力する。FIG. 1 is a block diagram of an embodiment of the optical transmission line duplication system of the present invention. The first electrical-optical conversion circuit 1 and the first electrical-optical conversion circuit 2 receive an input signal 101, which is a common electrical signal, and output optical signals to the first and second optical transmission lines 3 and 4, respectively. do.
第１の光分岐器５は、第１の光伝送路３から入力された
光信号を分岐して第１の光スイッチ７と第２の光スイッ
チ８に入力する。同様に第２の光分岐器６は、第２の光
伝送路４から入力された光信号を分岐して第１の光スイ
ッチ７と第２の光スイッチ８に入力する。第１の光スイ
ッチの出力は、第１の光−電気変換回路９に入力され電
気信号に変換される。同様に、第２の光スイッチ８の出
力は、第２の光−電気変換回路１０に入力され電気信号
に変換される。第１及び第２の光スイッチ７゜８は、第
１及び第２の光−電気変換回路９．１０が受信した信号
の状態に応じた切替え信号を受信することにより伝送路
の切り替えを行なう、この光スイッチ７．８を切り替え
ることにより第１の電気−光変換回路１は、第１及び第
２の光−電気変換回路９，１０と接続される。同様に第
２の電気−光変換回路２も第１及び第２の光−電気変換
回路９，１０と接続される。こうして、従来例に比べる
と電気−光変換と光−電気変換の組合せが２倍になるた
め、システム信頼性を著しく向上させることができる。The first optical splitter 5 branches the optical signal input from the first optical transmission line 3 and inputs it to the first optical switch 7 and the second optical switch 8. Similarly, the second optical splitter 6 branches the optical signal input from the second optical transmission line 4 and inputs it to the first optical switch 7 and the second optical switch 8. The output of the first optical switch is input to the first optical-to-electrical conversion circuit 9 and converted into an electrical signal. Similarly, the output of the second optical switch 8 is input to a second optical-to-electrical conversion circuit 10 and converted into an electrical signal. The first and second optical switches 7°8 switch the transmission paths by receiving switching signals according to the states of the signals received by the first and second optical-to-electrical conversion circuits 9.10. By switching this optical switch 7.8, the first electrical-optical conversion circuit 1 is connected to the first and second optical-electrical conversion circuits 9, 10. Similarly, the second electrical-optical conversion circuit 2 is also connected to the first and second optical-electrical conversion circuits 9 and 10. In this way, since the number of combinations of electrical-to-optical conversion and optical-to-electrical conversion is doubled compared to the conventional example, system reliability can be significantly improved.
以上説明したように本発明は、伝送路の途中に光分岐器
と光スイッチと、備えることにより、２系統の光伝送系
列の切替え保護が光伝送系列ごとに独立的に行なえ、正
常なパネルが送受信側に存在していてもデーターが通ら
ないということを根本的に回避できる効果がある。また
、信号経路の組合せが多くなるため、系としての信頼性
が著しく高くなるという効果がある。As explained above, by providing an optical splitter and an optical switch in the middle of the transmission line, the present invention can protect the switching of two optical transmission lines independently for each optical transmission line. It has the effect of fundamentally avoiding situations where data cannot pass even if it exists on the sending and receiving sides. Furthermore, since the number of combinations of signal paths increases, there is an effect that the reliability of the system is significantly increased.
第１図は本発明の光伝送路２重化方式の一実施令の構成
図、第２図は従来の光伝送路２重化方式の構成図である
。
１・・・第１の電気−光変換回路、２・・・第２の電気
−光変換回路、３・・・第１の光伝送路、４・・・第２
の光伝送路、５・・・第１の光分岐器、６・・・第２の
光分岐器、７・・・第１の光スイッチ、８・・・第の光
スイッチ、９・・・第１の光−電気変換回路、１０・・
・第２の光−電気変換回路、１１・・・送信部スイッチ
、１２・・・受信部スイッチ、１０１・・・入力信号、
１０２・・・第１の光スイツチ制御信号、１０３・・・
第２の光スイツチ制御信号。FIG. 1 is a configuration diagram of one implementation order of the optical transmission line duplication system of the present invention, and FIG. 2 is a configuration diagram of a conventional optical transmission line duplication system. DESCRIPTION OF SYMBOLS 1... First electrical-optical conversion circuit, 2... Second electrical-optical conversion circuit, 3... First optical transmission line, 4... Second
optical transmission line, 5... first optical splitter, 6... second optical splitter, 7... first optical switch, 8... first optical switch, 9... First optical-electrical conversion circuit, 10...
- Second optical-electrical conversion circuit, 11... Transmitter switch, 12... Receiver switch, 101... Input signal,
102...first optical switch control signal, 103...
Second optical switch control signal.
Claims (1)
、第２の電気−光変換回路と、前記第１の電気−光変換
回路に接続される第１の光伝送路と、前記第２の電気−
光変換回路に接続される第２の光伝送路と、前記第１の
光伝送路と接続される第１の光分岐器と、前記第２の光
伝送路と接続される第２の光分岐器と、前記第１の光分
岐器の一方の出力及び第２を光分岐器の一方の出力と接
続され外部からの制御信号によってスイッチングさせる
第１の光スイッチと、前記第１の光分岐器の他方の出力
及び第２の光分岐器の他方の出力と接続され外部からの
制御信号によってスイッチングされる第２の光スイッチ
と、前記第１の光スイッチと接続される第１の光−電気
変換回路と、前記第２の光スイッチと接続される第２の
光−電気変換回路とを備えて成ることを特徴とする光伝
送路２重化方式。a first electrical-optical conversion circuit that receives a common electrical signal as input; a second electrical-optical conversion circuit; a first optical transmission line connected to the first electrical-optical conversion circuit; Second electricity-
a second optical transmission line connected to the optical conversion circuit; a first optical branching device connected to the first optical transmission line; and a second optical branch connected to the second optical transmission line. a first optical switch that is connected to one output of the first optical splitter and a second output of the optical splitter and is switched by an external control signal; and the first optical splitter. and a second optical switch connected to the other output of the second optical splitter and the other output of the second optical splitter and switched by an external control signal, and a first optical-electrical switch connected to the first optical switch. 1. An optical transmission line duplication system comprising: a conversion circuit; and a second optical-to-electrical conversion circuit connected to the second optical switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1265531A JP2752730B2 (en) | 1989-10-11 | 1989-10-11 | Optical transmission line duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1265531A JP2752730B2 (en) | 1989-10-11 | 1989-10-11 | Optical transmission line duplexer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03126334A true JPH03126334A (en) | 1991-05-29 |
| JP2752730B2 JP2752730B2 (en) | 1998-05-18 |
Family
ID=17418423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1265531A Expired - Fee Related JP2752730B2 (en) | 1989-10-11 | 1989-10-11 | Optical transmission line duplexer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2752730B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2389261A (en) * | 2002-05-30 | 2003-12-03 | Bookham Technology Plc | Optical protective switching modules |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854147U (en) * | 1981-10-06 | 1983-04-13 | 三菱電機株式会社 | Optical fiber signal transmission equipment |
| JPS6427324A (en) * | 1987-04-14 | 1989-01-30 | Centre Nat Etd Telecomm | Optical fiber transmitter |
-
1989
- 1989-10-11 JP JP1265531A patent/JP2752730B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854147U (en) * | 1981-10-06 | 1983-04-13 | 三菱電機株式会社 | Optical fiber signal transmission equipment |
| JPS6427324A (en) * | 1987-04-14 | 1989-01-30 | Centre Nat Etd Telecomm | Optical fiber transmitter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2389261A (en) * | 2002-05-30 | 2003-12-03 | Bookham Technology Plc | Optical protective switching modules |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2752730B2 (en) | 1998-05-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |