JP2752730B2 - Optical transmission line duplexer - Google Patents
Optical transmission line duplexerInfo
- Publication number
- JP2752730B2 JP2752730B2 JP1265531A JP26553189A JP2752730B2 JP 2752730 B2 JP2752730 B2 JP 2752730B2 JP 1265531 A JP1265531 A JP 1265531A JP 26553189 A JP26553189 A JP 26553189A JP 2752730 B2 JP2752730 B2 JP 2752730B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- transmission line
- conversion circuit
- switch
- optical transmission
- 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 - Fee Related
Links
Landscapes
- Optical Communication System (AREA)
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重化装置に関する。The present invention relates to an optical transmission line duplexing device.
従来、この種の光伝送路２重化装置は、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 duplexing apparatus includes a first electric-optical conversion circuit 1, a first optical transmission line 3, and a first optical-electric conversion circuit. 9, a second electric-optical conversion circuit, a second optical transmission line 4,
The optical transmission system composed of the second optical-to-electrical conversion circuit 10 is switched between the transmission unit switch 11 and the reception unit switch 12 for operation.
上述した従来の光伝送路２重化装置では、送信側と受
信側の切替スイッチが正常に動作しなかった場合には信
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 above-described conventional optical transmission line duplexing apparatus, if the changeover switch on the transmission side and the reception side does not operate normally, no signal is passed, and the first electro-optical converter 1 and the second If the optical-to-electrical conversion circuit 2 fails, the optical transmission path 3,
4 Both have the disadvantage that data does not pass.
本発明の光伝送路２重化装置は、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の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。An optical transmission line duplexing device according to the present invention includes a first electro-optical conversion circuit, a second electro-optical conversion circuit, and a first electro-optical conversion circuit that receive a common electric signal as an input. A first optical transmission line to be connected, a second optical transmission line to be connected to the second electro-optical conversion circuit, and a first optical splitter to be connected to the first optical transmission line. A second optical splitter connected to the second optical transmission line, and an external control signal connected to one output of the first optical splitter and one output of the second optical splitter A first optical switch that is switched by the first optical switch and a second optical switch that is connected to the other output of the first optical branch and the other output of the second optical branch and that is switched by an external control signal. A first optical-electrical conversion circuit connected to the first optical switch, and a second optical switch. Second light - constructed and an electric converter circuit.
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 described with reference to the drawings.
第１図は本発明の光伝送路２重化装置の一実施例の構
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 configuration diagram of an embodiment of an optical transmission line duplexing apparatus according to the present invention. First electric-optical conversion circuit 1 and first electric
The optical conversion circuit 2 receives an input signal 101 as a common electric signal and outputs an optical signal to the first and second optical transmission lines 3 and 4, respectively.
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 splits an optical signal input from the first optical transmission line 3 and inputs the split optical signal to the first optical switch 7 and the second optical switch 8. Similarly, the second optical splitter 6 splits the optical signal input from the second optical transmission line 4 and inputs the split optical signal 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-electrical conversion circuit 9 and is converted into an electric signal. Similarly, the output of the second optical switch 8 is input to the second optical-electrical conversion circuit 10 and is converted into an electric signal. The first and second optical switches 7, 8 are
The transmission path is switched by receiving a switching signal according to the state of the signal received by the second optical-electrical conversion circuits 9 and 10. By switching these optical switches 7 and 8, the first electro-optical conversion circuit 1 allows the first and second optical-optical
Connected to electric conversion circuits 9 and 10. Similarly, the second electro-optical conversion circuit 2 is also connected to the first and second optical-electric conversion circuits 9 and 10. In this way, the number of combinations of the electrical-optical conversion and the optical-electrical conversion is doubled as compared with the conventional example, so that the 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 described above, the present invention provides the optical splitter and the optical switch in the middle of the transmission path, so that the switching protection of the two optical transmission sequences can be performed independently for each optical transmission sequence,
Even if a normal panel exists on the transmission / reception side, there is an effect of fundamentally preventing data from passing therethrough. In addition, 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重化装置の一実施令の構成
図、第２図は従来の光伝送路２重化装置の構成図であ
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、10
1……入力信号、102……第１の光スイッチ制御信号、10
3……第２の光スイッチ制御信号。FIG. 1 is a block diagram of one embodiment of an optical transmission line duplexer of the present invention, and FIG. 2 is a configuration diagram of a conventional optical transmission line duplexer. 1 1st electrical-optical conversion circuit, 2 ... 2nd electrical-optical conversion circuit, 3 ... 1st optical transmission path, 4 ... 2nd optical transmission path, 5 ... 1st Optical splitter, 6 Second optical splitter, 7
... First optical switch, 8... Second optical switch, 9.
First optical-to-electrical conversion circuit, 10... Second optical-to-electrical conversion circuit, 11... Transmitter switch, 12.
1 ... input signal, 102 ... first optical switch control signal, 10
3 ... second optical switch control signal.
Claims (1)
−光変換回路と、 分岐された前記電気信号を他方を入力とする第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
路および前記第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前記第２の光分岐
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前記第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、 を備えていることを特徴とする光伝送路２重化装置。1. An electric signal splitter for splitting an electric signal, a first electro-optical conversion circuit receiving one of the input electric signals, and the other input receiving the split electric signal. A second electro-optical conversion circuit, a first optical transmission line connected to the first electro-optical conversion circuit, and a second optical transmission line connected to the second electro-optical conversion circuit.
An optical transmission line, a first optical splitter connected to the first optical transmission line, a second optical splitter connected to the second optical transmission line, and the first optical branch A first optical switch connected to one output of the optical switch and one output of the second optical splitter and switched by an external control signal; and the other output of the first optical splitter and the second optical switch. A second optical switch connected to the other output of the optical branching device and switched by a control signal from the outside; a first optical-electrical conversion circuit connected to the first optical switch; And a second optical-electrical conversion circuit connected to the 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 JPH03126334A (en) | 1991-05-29 |
| JP2752730B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2389261A (en) * | 2002-05-30 | 2003-12-03 | Bookham Technology Plc | Optical protective switching modules |
Family Cites Families (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 |
| FR2614110B1 (en) * | 1987-04-14 | 1989-07-21 | Thiennot Jean | OPTICAL FIBER TRANSMISSION DEVICE, PARTICULARLY IN AN UNDERWATER ENVIRONMENT |
-
1989
- 1989-10-11 JP JP1265531A patent/JP2752730B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03126334A (en) | 1991-05-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |