JPS63227225A - Automatic wavelength switching type wavelength multiplex optical transmitter - Google Patents
Automatic wavelength switching type wavelength multiplex optical transmitterInfo
- Publication number
- JPS63227225A JPS63227225A JP62061922A JP6192287A JPS63227225A JP S63227225 A JPS63227225 A JP S63227225A JP 62061922 A JP62061922 A JP 62061922A JP 6192287 A JP6192287 A JP 6192287A JP S63227225 A JPS63227225 A JP S63227225A
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- wavelength
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- 230000003287 optical effect Effects 0.000 title claims abstract description 242
- 230000005540 biological transmission Effects 0.000 claims abstract description 100
- 239000013307 optical fiber Substances 0.000 claims abstract description 25
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、１心光ファイバを用いて光信号の双方向伝送
を行うための自動波長切換形波長多重光伝送装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic wavelength switching type wavelength division multiplexing optical transmission device for bidirectional transmission of optical signals using a single-core optical fiber.
（従来の技術）
従来、このような分野の技術としては、昭和５９年度電
子通信学会総合全国大会、田村安昭他１’−２６５６発
光、受光素子内蔵型双方向伝送用合分波器Ｊ Ｐｌｏ−
３５６に記載されるものがあった。以下、その構成を図
を用いて説明する。(Prior art) Conventionally, technologies in this field include the 1985 National Conference of the Institute of Electronics and Communication Engineers, Yasuaki Tamura et al.
There was something described in 356. The configuration will be explained below using figures.
第２図は従来の波長多重光伝送装置の構成例とその使用
例を示す光伝送システム図である。この光伝送システム
は第１と第２の波長多重光伝送装＠１−１ 、１−２を
備え、その両光伝送装置１−１゜１−２が１心光ファイ
バ２で相互に接続されている。FIG. 2 is an optical transmission system diagram showing a configuration example of a conventional wavelength division multiplexing optical transmission device and an example of its use. This optical transmission system includes first and second wavelength multiplexed optical transmission devices @1-1 and 1-2, and both optical transmission devices 1-1 and 1-2 are connected to each other by a single-core optical fiber 2. ing.
第１の波長多重光伝送装＠１−１は、入力電気信号Ｓｉ
Ａを波長λ１の光信号に変換する電気／光変換器（Ｅｌ
ｏ）１０−１ 、波長λ２の光信号を出力電気信号ＳＯ
Ａに変換する光／電気変換器（０／Ｅ）１１−１、及び
波長λ１．λ２の光信号の合波と分波を行う光合分波器
１２−１で構成されている。同様に第２の波長多重光伝
送装置１−２は、入力電気信号ＳｉＢを波長λ２の光信
号に変換する電気／光変換器（Ｅｌｏ）１０−２ 、波
長λ１の光信号を出力電気信号ＳｏＢに変換する光／電
気変換器（０／Ｅ）１１−２ 、及び波長λ１．λ２の
光信号の合波と分波を行う光合分波器１２−２で構成さ
れている。The first wavelength multiplexing optical transmission device @1-1 has an input electrical signal Si
An electrical/optical converter (El
o) 10-1, outputs an optical signal of wavelength λ2 as an electrical signal SO
an optical/electrical converter (0/E) 11-1 that converts wavelengths λ1. It is composed of an optical multiplexer/demultiplexer 12-1 that multiplexes and demultiplexes optical signals of λ2. Similarly, the second wavelength multiplexing optical transmission device 1-2 includes an electrical/optical converter (Elo) 10-2 that converts an input electrical signal SiB into an optical signal with a wavelength λ2, and an output electrical signal SoB that converts an optical signal with a wavelength λ1. an optical/electrical converter (0/E) 11-2 that converts the wavelength λ1. It is composed of an optical multiplexer/demultiplexer 12-2 that multiplexes and demultiplexes optical signals of λ2.
以上の構成において、第１の波長多重光伝送装置１−１
に入力電気信＠ＳｉＡが供給されると、その入力電気信
号Ｓｉ＾は電気／光変換器１０−１で波長λ１の光信号
に変換され、それが光合分波器１２−１及び光ファイバ
２を通して第２の波長多重光伝送装置１−２側へ伝送さ
れる。第２の波長多重光伝送装置１−２側へ伝送された
波長λ１の光信号は、光／電気変換器１１−２で電気信
号に変換され、それが出力電気信号ＳＯＢの形で出力さ
れる。また、第２の波長多重光伝送装置１−２に入力電
気信号ＳｉＢが供給されると、その入力電気信号ＳｉＢ
は電気／光変換器１０−２で波長λ２の光信号に変換さ
れ、それが光合分波器１２−２及び光ファイバ２を通し
て第１の波長多重光伝送装置１−１側へ伝送され、そこ
の光合分波器１２−１を通して光／電気変換器１１−１
で出力電気信号ＳＯＡに変換され、出力される。このよ
うに１本の光ファイバ２を用いて波長λ１゜λ２の２波
多重双方向伝送を行っていた。In the above configuration, the first wavelength multiplexing optical transmission device 1-1
When an input electric signal @SiA is supplied to , the input electric signal Si^ is converted into an optical signal of wavelength λ1 by an electric/optical converter 10-1, which is transmitted to an optical multiplexer/demultiplexer 12-1 and an optical fiber 2. The signal is transmitted to the second wavelength multiplexing optical transmission device 1-2 through the wavelength division multiplexing optical transmission device 1-2. The optical signal of wavelength λ1 transmitted to the second wavelength multiplexing optical transmission device 1-2 side is converted into an electrical signal by the optical/electrical converter 11-2, which is output in the form of an output electrical signal SOB. . Further, when the input electrical signal SiB is supplied to the second wavelength multiplexing optical transmission device 1-2, the input electrical signal SiB
is converted into an optical signal of wavelength λ2 by the electrical/optical converter 10-2, which is transmitted through the optical multiplexer/demultiplexer 12-2 and the optical fiber 2 to the first wavelength multiplexing optical transmission device 1-1 side, where it is transmitted to the first wavelength multiplexing optical transmission device 1-1 side. The optical/electrical converter 11-1 passes through the optical multiplexer/demultiplexer 12-1.
It is converted into an output electrical signal SOA and output. In this way, one optical fiber 2 was used to perform two-wave multiplexed bidirectional transmission of wavelengths λ1 and λ2.
（発明が解決しようとする問題点）
しかしながら、上記構成の装置では、第１の波長多重光
伝送装置１−１の送信光波長がλ１であり、第２の波長
多重光伝送装置１−２の送信光波長がλ２であってそれ
ぞれの波長が異なるため、第１と第２の光伝送装＠ｌ−
１、１−２間には互換性がなく、不利不便であった。(Problems to be Solved by the Invention) However, in the device with the above configuration, the transmission light wavelength of the first wavelength division multiplexing optical transmission device 1-1 is λ1, and the wavelength of the transmission light of the second wavelength division multiplexing optical transmission device 1-2 is λ1. Since the transmitted light wavelength is λ2 and each wavelength is different, the first and second optical transmission devices @l-
There was no compatibility between 1 and 1-2, which was disadvantageous and inconvenient.
本発明は前記従来技術が持っていた問題点として互換性
のない点について解決した自動波長切換形波長多重光伝
送装置を提供するものである。The present invention provides an automatic wavelength switching type wavelength division multiplexing optical transmission device that solves the problem of incompatibility that the prior art had.
（問題点を解決するための手段）
本発明は前記問題点を解決するために、１心光ファイバ
を用いて光信号の双方向伝送を自動的に行う自動波長切
換形波長多重光伝送装置において、この装置を少なくと
も、１心光ファイバを用いて双方向に伝送する第１と第
２の波長の光信号をそれぞれ入出力する光入出力回路と
、前記第１と第２の波長を選択する波長選択手段と、前
記第１の波長の光信号を電気信号に変換する第１の光／
電気変換器及び電気信号を前記第１の波長の光信号に変
換する第１の電気／光変換器と、前記第２の波長の光信
号を電気信号に変換する第２の光／電気変換器及び電気
信号を前記第２の波長の光信号に変換する第２の電気／
光変換器と、制御信号に基づき入力電気信号を前記第１
と第２の電気／光変換器側に切換えて供給する第１のス
イッチと、制御信号に基づき前記第１と第２の光／電気
変換器の出力電気信号を切換えて出力する第２のスイッ
チと、前記第１と第２の光／電気変換器の出力電気信号
に基づき前記各制御信号を出力するスイッチ制御回路と
で、構成したものである。(Means for Solving the Problems) In order to solve the above problems, the present invention provides an automatic wavelength switching type wavelength division multiplexing optical transmission device that automatically performs bidirectional transmission of optical signals using a single-core optical fiber. , this device includes at least an optical input/output circuit that inputs and outputs optical signals of first and second wavelengths that are bidirectionally transmitted using a single-core optical fiber, and selects the first and second wavelengths. wavelength selection means; and a first light/wavelength selection means for converting the optical signal of the first wavelength into an electrical signal.
an electrical converter; a first electrical/optical converter that converts the electrical signal into an optical signal of the first wavelength; and a second electrical/optical converter that converts the optical signal of the second wavelength into an electrical signal. and a second electrical signal converting the electrical signal into an optical signal of the second wavelength.
an optical converter, and an input electrical signal based on the control signal.
and a second switch that switches and outputs the output electrical signals of the first and second optical/electrical converters based on a control signal. and a switch control circuit that outputs each of the control signals based on the output electrical signals of the first and second optical/electrical converters.
（作 用）
本発明によれば、以上のように自動波長切換形波長多重
光伝送装置を構成したので、スイッチ制御回路により第
１のスイッチは入力電気信号を切換えてそれを第１また
は第２の電気／光変換器へ与え、その変換器より第１ま
たは第２の波長を有する光信号を出力させ、それを波長
選択手段及び光入出力回路を通して１心光ファイバへ送
出させる。スイッチ制御回路により第２のスイッチは、
入出力回路及び波長選択手段を通して第１または第２の
光／電気変換器で充電変換された出力電気信号を選択し
て出力する。この第１．第２のスイッチの切換えにより
、波長多重光伝送装置に互換 性を持たせることが可能
になり、１種類の波長多重光伝送装置を用いた双方向伝
送が行える。従って前記問題点を除去できるのである。(Function) According to the present invention, since the automatic wavelength switching type wavelength division multiplexing optical transmission device is configured as described above, the first switch switches the input electrical signal and transmits it to the first or second electrical signal. is applied to an electrical/optical converter, the converter outputs an optical signal having a first or second wavelength, and the optical signal is transmitted to a single-core optical fiber through a wavelength selection means and an optical input/output circuit. The switch control circuit causes the second switch to
The output electrical signal charged and converted by the first or second optical/electrical converter is selected and outputted through the input/output circuit and the wavelength selection means. This first. By switching the second switch, it is possible to make wavelength division multiplexing optical transmission devices compatible, and bidirectional transmission can be performed using one type of wavelength division multiplexing optical transmission device. Therefore, the above-mentioned problem can be eliminated.
（実施例）
第１図（１） 、 （２）は本発明の実施例に係る自動
波長切換形波長多重光伝送装置の構成およびその使用例
を示す光伝送システム図であり、同図（１）は波長λ１
の光信号を右方向へ、波長λ２の光信号を左方向へ伝送
する場合のシステムが、同図（２）はその逆方向の伝送
システムがそれぞれ示されている。(Embodiment) Figures 1 (1) and (2) are optical transmission system diagrams showing the configuration and usage example of an automatic wavelength switching type wavelength division multiplexing optical transmission device according to an embodiment of the present invention. ) is the wavelength λ1
The system for transmitting an optical signal of wavelength λ2 to the right and the optical signal of wavelength λ2 to the left is shown in FIG.
第１図（１）において、自動波長切換形の波長多重光伝
送装置２０−１は、１心光ファイバ２１に接続されるも
ので、第１．第２のスイッチ３０−１１ 。In FIG. 1(1), an automatic wavelength switching type wavelength division multiplexing optical transmission device 20-1 is connected to a single-core optical fiber 21. Second switch 30-11.
３０−１２を有するスイッチ回路３０−１、スイッチ制
御回路３１−１、発光素子駆動回路３２−１１ 、３２
−１２ 、受光増幅器３３−１１ 、３３−１２ 、及
び発光素子３５−１１ 。30-12, a switch control circuit 31-1, and a light emitting element drive circuit 32-11, 32.
-12, light receiving amplifiers 33-11, 33-12, and light emitting element 35-11.
３５−１２と受光素子３６−１１ 、３６−１２を有す
る発受光素子併設形のハイブリッド光合分波器３４−１
を備えている。A hybrid optical multiplexer/demultiplexer 34-1 with a light emitting/receiving element having a light receiving element 35-12 and a light receiving element 36-11, 36-12.
It is equipped with
第１．第２のスイッチ３０−１１ 、３０−１２を有す
るスイッチ回路３０−１は、スイッチ制御回路３１−１
から出ツノされる制御信号に基づき信号経路を切換える
回路でおり、トランジスタ等で構成されている。1st. A switch circuit 30-1 having second switches 30-11 and 30-12 is a switch control circuit 31-1.
This circuit switches the signal path based on the control signal output from the circuit, and is composed of transistors and the like.
このスイッチ回路３０−１中の第１のスイッチ３０−１
１は、入力電気信号ＳｉＡを切換えて発光素子駆動回路
３２−１１または３２−１２に与えるスイッチ、第２の
スイッチ３０−１２は受光増幅器３３−１１または３３
−１２の出力側を切換えて出力電気信号ＳｏＡを出力す
るスイッチである。スイッチ制御回路３１−１は、受光
増幅器３３−１１ 、３３−１２の出力に基づきスイッ
チ回路３０−１の切換え動作を制御するための制御信号
を出力する回路であり、送受信系形成の論理判断を行う
機能を有している。発光素子駆動回路３２−１１ 。The first switch 30-1 in this switch circuit 30-1
1 is a switch that switches the input electric signal SiA and supplies it to the light emitting element drive circuit 32-11 or 32-12; the second switch 30-12 is a light receiving amplifier 33-11 or 33;
This is a switch that switches the output side of -12 and outputs the output electrical signal SoA. The switch control circuit 31-1 is a circuit that outputs a control signal for controlling the switching operation of the switch circuit 30-1 based on the outputs of the light-receiving amplifiers 33-11 and 33-12, and makes logical decisions for forming the transmitting and receiving system. It has the function to do. Light emitting element drive circuit 32-11.
３２−１２は第１のスイッチ３０−１１を通して入力さ
れる入力電気信号ＳｉＡを増幅して発光素子３５−１１
。32-12 amplifies the input electrical signal SiA input through the first switch 30-11 and outputs the light emitting element 35-11.
.
３５−１２を駆動する回路、受光増幅器３３−１１ 。35-12, a light receiving amplifier 33-11.
３３−１２は受光素子３６−１１ 、３６−１２の出力
電気信号を増幅して第２のスイッチ３０−１２側へ与え
る回路である。33-12 is a circuit that amplifies the output electric signals of the light receiving elements 36-11 and 36-12 and supplies them to the second switch 30-12 side.
ハイブリッド光合分波器３４−１は、２個の入出力ポー
ト３４−１ａ及び１個の共通ポート２４−１ｂを有し、
その各入出力ポート３４−１８にはそれらの波長に適、
合した第１．第２の電気／光変換器である発光素子３５
−１１ 、３５−１２ 、及び第１．第２の光／電気変
換器である受光素子３Ｂ−１１、３６−１２がそれぞれ
対になって併設され、ざらにその共通ポート３４−１ｂ
には図示しない光コネクタを介して１心光ファイバ２１
が接続される。発光素子３５−１１は発光素子駆動回路
３２−１１の出力電気信号を波長λ１の光信号に変換す
るもの、これと併設された受光素子、 ３６−１１
は波長λ１の光信号を電気信号に変換して受光増幅器３
３−１１へ与えるものである。同様に発光素子３５−１
２は発光素子駆動回路３２−１２の出力電気信号を波長
λ２の光信号に変換するもの、その発光素子３５−１２
に併設された受光素子３６−１２は波長λ２の光信号を
電気信号に変換して受光増幅器３３−１２へ与えるもの
である。そして発光素子３５−１１ 、３５−１２及び
受光素子３６−１１ 、３６−１２と共通ポート３４−
１ｂとの間には、図示されていないが各発光素子３５−
１１ 、３５−１２の出力光信号を能率良く共通ポート
３４−１ｂに送出し、かつ共通ポート３４−１ｂから送
られてくる光信号を各受光素子３６−１１ 、３６−１
２へ能率良く入射させるだめの光入出力回路及び波長選
択手段が設けられている。光入出力回路は例えばレンズ
、ミラー等で構成されると共に、波長選択手段は例えば
光波長選択透過性フィルタ等で構成される。The hybrid optical multiplexer/demultiplexer 34-1 has two input/output ports 34-1a and one common port 24-1b,
Each of its input/output ports 34-18 has a
The first match. Light emitting element 35 which is a second electric/optical converter
-11, 35-12, and 1st. Light receiving elements 3B-11 and 36-12, which are second optical/electrical converters, are arranged side by side in pairs, and their common port 34-1b
A single-core optical fiber 21 is connected via an optical connector (not shown).
is connected. The light emitting element 35-11 converts the output electric signal of the light emitting element drive circuit 32-11 into an optical signal of wavelength λ1, and the light receiving element attached thereto, 36-11
converts the optical signal of wavelength λ1 into an electrical signal and sends it to the optical receiver amplifier 3.
3-11. Similarly, light emitting element 35-1
2 converts the output electric signal of the light emitting element drive circuit 32-12 into an optical signal of wavelength λ2, and its light emitting element 35-12
A light-receiving element 36-12 attached thereto converts an optical signal of wavelength λ2 into an electrical signal and supplies it to a light-receiving amplifier 33-12. And the light emitting elements 35-11, 35-12 and the light receiving elements 36-11, 36-12 and the common port 34-
Although not shown, each light emitting element 35-
11, 35-12 are efficiently sent to the common port 34-1b, and the optical signals sent from the common port 34-1b are sent to the respective light receiving elements 36-11, 36-1.
A light input/output circuit and wavelength selection means are provided for efficiently inputting the light into the light source 2. The optical input/output circuit is composed of, for example, a lens, a mirror, etc., and the wavelength selection means is composed of, for example, an optical wavelength selection transmitting filter.
以上のような自動波長切換形の波長多重光伝送装置２０
−１を用いて双方向２波多重伝送システムを構成する場
合、その波長多重光伝送装置２０−１と同一構造の波長
多重光伝送装置２０−２を光ファイバ２１に接続する。Automatic wavelength switching type wavelength multiplexing optical transmission device 20 as described above
When configuring a bidirectional two-wave multiplexing transmission system using the wavelength multiplexing optical transmission system 20-1, a wavelength division multiplexing optical transmission apparatus 20-2 having the same structure as the wavelength division multiplexing optical transmission apparatus 20-1 is connected to the optical fiber 21.
この波長多重光伝送装置２０−２は、入力電気信号Ｓｉ
Ｂの切換えを行う第１のスイッチ３０−２１と出力電気
信＠ＳｏＢの切換えを行う第２のスイッチ３０−２２と
を有するスイッチ回路３０−２、このスイッチ回路３１
−２の切換え制御を行うスイッチ制御回路３１−２、発
光素子駆動回路３２−２１ 、３２−２２、受光増幅器
３３−２１ 、３３−２２ 、及び発受光素子併設形の
ハイブリッド光合分波器３４−２を備えている。This wavelength division multiplexing optical transmission device 20-2 has an input electrical signal Si
A switch circuit 30-2 having a first switch 30-21 for switching B and a second switch 30-22 for switching output electric signal @SoB, this switch circuit 31
-2, a switch control circuit 31-2 that performs switching control, a light emitting element drive circuit 32-21, 32-22, a light receiving amplifier 33-21, 33-22, and a hybrid optical multiplexer/demultiplexer 34- with light emitting and receiving elements. It is equipped with 2.
ハイブリッド光合分波器３４−２は、２個の入出力ポー
ト３４−２ａ及び１個の共通ポート３４−２ｂを有し、
その各入出力ポート３４−２８にはそれぞれ発光素子３
５−２１ 、３５−２２及び受光素子３６−２１ 、３
６−２２が併設されている。The hybrid optical multiplexer/demultiplexer 34-2 has two input/output ports 34-2a and one common port 34-2b,
Each input/output port 34-28 has a light emitting element 3.
5-21, 35-22 and light receiving elements 36-21, 3
6-22 is attached.
第１図（２）は同図（１）と同一の双方向２波多重伝送
システムの構成図であり、波長多重光伝送装置２０−１
．２０−２中のスイッチ回路３０−１．３０−２の切換
えにより第１図（１）と逆方向の光伝送を行う例が示さ
れている。FIG. 1 (2) is a configuration diagram of the same bidirectional two-wave multiplexing transmission system as in FIG.
．． An example is shown in which optical transmission is performed in the opposite direction to that in FIG. 1(1) by switching the switch circuits 30-1 and 30-2 in 20-2.
第３図は第１図の動作を示すフローチャートでおり、こ
の第３図を参照しつつ第１図の動作を説明する。FIG. 3 is a flowchart showing the operation of FIG. 1, and the operation of FIG. 1 will be explained with reference to FIG.
第１図（１）に示すように、一方の波長多重伝送装置
波長λ１の光信号を伝送し、続いて他方の波長多重伝送
装置２０−２から一方の波長多重光伝送装置２０−１へ
波長λ２の光信号を伝送する場合の動作を説明する。As shown in FIG. 1 (1), one wavelength division multiplexing transmission device transmits an optical signal of wavelength λ1, and then from the other wavelength division multiplexing transmission device 20-2 to one wavelength division multiplexing transmission device 20-1. The operation when transmitting an optical signal of λ2 will be explained.
第３図のステップ４０で電源を投入すると、一方７の波
長多重光伝送装置２０−１におけるスイッチ制御回路３
１−１は、受光増幅器３３−１１ 、３３−１２の出力
に基づき、他方の波長多重光伝送装置２０−２からの受
信光信号が存在するか否かを判断する（ステップ４１）
。第１図（１）では未だ受信光信号を入力していないの
で、スイッチ制御回路３１−１はステップ４２において
所定の波長で送受信（例えば、λ１で送信、λ２で受信
）を行うために、制御信号を出力してスイッチ回路３０
−１中の第１のスイッチ３０−１１を発光素子駆動回路
３２−１１側へ切換えると共に、第２のスイッチ３０−
１２を受光増幅器３３−１２側へ切換える。When the power is turned on in step 40 of FIG.
1-1 determines whether or not there is a received optical signal from the other wavelength multiplexing optical transmission device 20-2 based on the outputs of the optical receiving amplifiers 33-11 and 33-12 (step 41).
. In FIG. 1 (1), since the received optical signal has not yet been input, the switch control circuit 31-1 performs control in order to transmit and receive at a predetermined wavelength (for example, transmit at λ1 and receive at λ2) in step 42. The switch circuit 30 outputs a signal.
-1, the first switch 30-11 is switched to the light emitting element drive circuit 32-11 side, and the second switch 30-1 is switched to the light emitting element drive circuit 32-11 side.
12 to the light receiving amplifier 33-12 side.
すると、入力電気信号ＳｉＡは第１のスイッチ３０−１
１を通って発光素子駆動回路３２−１１に与えられ、そ
の発光素子駆動回路３２−１１により発光素子３５−１
１が動作して波長λ１の光信号に変換される。Then, the input electrical signal SiA is transmitted to the first switch 30-1.
1 to the light emitting element drive circuit 32-11, and the light emitting element drive circuit 32-11 drives the light emitting element 35-1.
1 is operated and converted into an optical signal of wavelength λ1.
この光信号はハイブリッド光合分波器３４−１中を通っ
てその共通ポート３４−１ｂから光フフイバ２１へ送出
される。光ファイバ２１で伝送された波長λ１の光信号
は、他方の波長多重光伝送装置２０−２に達し、その装
＠２０−２におけるハイブリッド光合分波器３４−２の
共通ポート３４−２ｂへ入力され、そのハイブリッド光
合分波器３４−２中を通って受光素子３Ｂ−２１で電気
信号に変換され、受光増幅器３３−２１で増幅される。This optical signal passes through the hybrid optical multiplexer/demultiplexer 34-1 and is sent to the optical fiber 21 from its common port 34-1b. The optical signal of wavelength λ1 transmitted through the optical fiber 21 reaches the other wavelength multiplexing optical transmission device 20-2, and is input to the common port 34-2b of the hybrid optical multiplexer/demultiplexer 34-2 in that device @20-2. The signal passes through the hybrid optical multiplexer/demultiplexer 34-2, is converted into an electrical signal by the light receiving element 3B-21, and is amplified by the light receiving amplifier 33-21.
スイッチ制御回路３１−２では受光増幅器３３−２１の
出力を入力し、第３図のステップ４１と同様に受信光信
号の存在の有無を判断し、この場合は受信光信号が存在
しているので、ステップ４３で受信波長の種類を検出す
る。受信光信号の波長がλ１であるため、スイッチ制御
回路３１−２はステップ４４−１においてスイッチ回路
３０−２の第２のスイッチ３０−２２を受光増幅器３３
−２１側へ切換えると共に、その波。The switch control circuit 31-2 inputs the output of the light-receiving amplifier 33-21, and judges whether there is a received optical signal in the same way as step 41 in FIG. 3. In this case, since the received optical signal is present, , in step 43, the type of reception wavelength is detected. Since the wavelength of the received optical signal is λ1, the switch control circuit 31-2 switches the second switch 30-22 of the switch circuit 30-2 to the light-receiving amplifier 33 in step 44-1.
When switching to the -21 side, the wave.
長λ１と異なる波長λ２で送信を行うために第１のスイ
ッチ３０−２１を発光素子駆動回路３２−２２側へ切換
える。そして受光増幅器３３−２１の出力は、第２のス
イッチ３０−２２を通り、出力電気信＠３０Ｂの形で出
力される。In order to transmit at a wavelength λ2 different from the wavelength λ1, the first switch 30-21 is switched to the light emitting element drive circuit 32-22 side. The output of the light receiving amplifier 33-21 passes through the second switch 30-22 and is output in the form of an output electric signal @30B.
一方、入力電気信号ＳｉＢは第１のスイッチ３０−２１
を通って発光素子駆動回路３２−２２に与えられ、この
駆動回路３２−２２により発光素子３５−２２が動作し
て波長λ２の光信号に変換される。この光信号はハイブ
リッド光合分波器３４−２中を通り、その共通ポート３
４−２ｂから光ファイバ２１へ送出される。光ファイバ
２１中の波長λ２の光信号が一方の波長多重光伝送装置
２０−１へ達すると、その装置２０−１におけるハイブ
リッド光合分波器３４−１の共通ポート３４−１ｂを通
って受光素子３６−１２で電気信号に変換され、さらに
受光増幅器３３−１２で増幅された後、第２のスイッチ
２０−１２を通って出力電気信号ＳｏＡの形で出力され
る。On the other hand, the input electrical signal SiB is transmitted to the first switch 30-21.
The light is applied to a light emitting element drive circuit 32-22 through the light emitting element drive circuit 32-22, which operates a light emitting element 35-22 and converts it into an optical signal of wavelength λ2. This optical signal passes through the hybrid optical multiplexer/demultiplexer 34-2 and its common port 3
4-2b to the optical fiber 21. When the optical signal with the wavelength λ2 in the optical fiber 21 reaches one of the wavelength multiplexing optical transmission devices 20-1, it passes through the common port 34-1b of the hybrid optical multiplexer/demultiplexer 34-1 in that device 20-1 and passes through the light receiving element. After being converted into an electrical signal by 36-12 and further amplified by a light receiving amplifier 33-12, it is output through a second switch 20-12 in the form of an output electrical signal SoA.
なお、前記ステップ４３において、仮にスイッチ制御回
路３１−２が第１図（２）に示すように受信波長λ２を
検出した場合、そのスイッチ制御回路３１−２はステッ
プ４４−２において送信波長をλ１とするために、第１
と第２のスイッチ３０−２１ 、３０−２２を前記とは
逆方向に切換える。Incidentally, in step 43, if the switch control circuit 31-2 detects the reception wavelength λ2 as shown in FIG. 1(2), the switch control circuit 31-2 detects the transmission wavelength λ1 in step 44-2 In order to
and the second switches 30-21 and 30-22 are switched in the opposite direction.
次に、送受信中の双方の波長多重光伝送装置２０−１．
２０−２におけるスイッチ制御回路３１−１．３１−２
は、相手側からの受信光信号の状態を常に監視している
。すなわら、一方のスイッチ制御回路３１−１は、ステ
ップ４５において受光増幅器３３−１２の出力に基づき
、波長λ２の受信光信号が存在するか否かを監視し、存
在する場合には現在の送受信状態を維持じ、仮に波長多
重伝送装置２０−２における発光素子３５−２２の故障
等によって受信中の波長λ２の光信号が一定時間以上断
状態となった場合にはステップ４６へ進む。ステップ４
６においてスイッチ制御回路３１−１は、送受信波長λ
１．λ２を逆にするために、第１図（２）に示すように
第１のスイッチ３０−１１を発光素子駆動回路３２−１
２側に切換えると共に、第２のスイッチ３０−１２を受
光増幅器３３−１１側に切換え、波長λ２の光信号を送
信させ、波長λ１の光信号を受信させる。以後同様に、
スイッチ制御回路３１−１はステップ４７において波長
λ１の受信光信号が存在するか否かを監視し、存在する
場合には現在の送受信系を維持し、存在しない場合には
ステップ４８において送受信波長λ２゜λ１を逆にする
ために第１．第２のスイッチ３０−１１ 、３０−１２
を第１図（１）のようにもとの状態に切換え、ステップ
４５へ戻る。Next, both wavelength division multiplexing optical transmission devices 20-1.
Switch control circuit 31-1.31-2 in 20-2
constantly monitors the status of the received optical signal from the other party. That is, one switch control circuit 31-1 monitors whether or not a received optical signal of wavelength λ2 exists based on the output of the light receiving amplifier 33-12 in step 45, and if it exists, the current signal is The transmitting/receiving state is maintained, and if the optical signal of the wavelength λ2 being received is interrupted for a certain period of time or more due to a failure of the light emitting element 35-22 in the wavelength division multiplexing transmission device 20-2, the process proceeds to step 46. Step 4
6, the switch control circuit 31-1 controls the transmission/reception wavelength λ
1. In order to reverse λ2, the first switch 30-11 is connected to the light emitting element drive circuit 32-1 as shown in FIG. 1(2).
At the same time, the second switch 30-12 is switched to the light-receiving amplifier 33-11 side, and the optical signal with the wavelength λ2 is transmitted and the optical signal with the wavelength λ1 is received. Similarly,
The switch control circuit 31-1 monitors in step 47 whether or not a received optical signal of wavelength λ1 exists, and if it exists, maintains the current transmission and reception system, and if it does not exist, changes the transmission and reception wavelength to λ2 in step 48.゜In order to reverse λ1, the first. Second switches 30-11, 30-12
is switched to the original state as shown in FIG. 1(1), and the process returns to step 45.
また、他方のスイッチ制御回路３１−２においても同様
に、ステップ４３．４４−１．４７．４８という動作、
おるいはステップ４３．４４−２．４５．４８という動
作を行う。Similarly, in the other switch control circuit 31-2, the operation of steps 43.44-1.47.48 is performed.
Otherwise, steps 43.44-2.45.48 are performed.
本実施例では、同一構造の２個の波長多重光伝送装置２
０−１．２０−２と１心光ファイバ２１を用い、その各
スイッチ制御回路３１−１．３１−２により、対向する
装置２０−２．２０−１の送信波長λ２．λ１を検出し
、自動的に送信波長を決定してスイッチ回路３０−１゜
３０−２を切換えるようにしたので、波長λ１．λ２の
光信号を双方向に多重伝送ができる。そのため、波長多
重光伝送装置２０−１．２０−２は互換性を有し、１種
類のものを用意すればよく、それによって使い勝手の向
上とシステムの低コスト化が可能となる。ざらに、各波
長多重光伝送装置２０−１．２０−２はそれぞれ２系統
の送受信回路を有しているので、一方の系統が故障した
場合にも、他方の系統がバックアップ回路として動作し
、それによって信頼性が向上する。また、スイッチ制御
回路３１−１゜３１−２において、スイッチ回路３０−
１．３０−２の切換え制御に連動して発光素子駆動回路
３２−１１ 、３２−１２ 。In this embodiment, two wavelength multiplexing optical transmission devices 2 having the same structure are used.
0-1.20-2 and a single-core optical fiber 21, each switch control circuit 31-1.31-2 controls the transmission wavelength λ2. λ1 is detected, the transmission wavelength is automatically determined, and the switch circuits 30-1 and 30-2 are switched. Bidirectional multiplex transmission of λ2 optical signals is possible. Therefore, the wavelength division multiplexing optical transmission devices 20-1 and 20-2 are compatible, and only one type needs to be prepared, thereby making it possible to improve usability and reduce the cost of the system. Roughly speaking, each of the wavelength division multiplexing optical transmission devices 20-1 and 20-2 has two transmission/reception circuits, so even if one system fails, the other system operates as a backup circuit. This improves reliability. Further, in the switch control circuits 31-1 and 31-2, the switch circuit 30-
1. Light emitting element drive circuits 32-11 and 32-12 in conjunction with the switching control of 30-2.
３２−２１ 、３２−２２ 、及び受光増幅器３３−１
１ 、３３−１２ 。32-21, 32-22, and light receiving amplifier 33-1
1, 33-12.
３３−２１ 、３３−２２のうちの待機状態あるいはオ
フ状態の箇所の電源を遮断する機能を付加すれば、低消
費電力化の効果も期待できる。If a function is added to cut off the power to parts 33-21 and 33-22 that are in a standby state or an off state, the effect of reducing power consumption can be expected.
第４図は第１図中の波長多重光伝送装置２０−１゜２０
−２のうち、例えば一方の波長多重光伝送装置２０−１
の実装例を示す斜視図である。Figure 4 shows the wavelength division multiplexing optical transmission device 20-1°20 in Figure 1.
-2, for example, one wavelength multiplexing optical transmission device 20-1
FIG. 2 is a perspective view showing an example of implementation.
この波長多重光伝送装置２０−１は、スイッチ３０−１
１ 、３０−１２ 、スイッチ制御回路３１−１、発光
素子駆動回路３２−１１ 、３２−１２ 、受光増幅器
３３−１１ 。This wavelength division multiplexing optical transmission device 20-1 includes a switch 30-1
1, 30-12, switch control circuit 31-1, light emitting element drive circuit 32-11, 32-12, light receiving amplifier 33-11.
３３−１２ 、及び発光素子３５−１１ 、３５−１２
と受光素子３６−１１ 、３６−１２が併設されたハイ
ブリッド光合分波器３４−１が光電子集積回路（以下、
０ＥＩＣという）で構成され、それが基板５０上に形成
されている。33-12, and light emitting elements 35-11, 35-12
The hybrid optical multiplexer/demultiplexer 34-1 in which the photodetectors 36-11 and 36-12 are installed is an optoelectronic integrated circuit (hereinafter referred to as
0EIC), which is formed on the substrate 50.
このように波長多重光伝送装置２０−１．２０−２を０
ＥＩＣで構成すれば、装置の小型化が図れるばかりか、
高精度化、低消費電力化、および低コスト化が可能とな
る。In this way, the wavelength division multiplexing optical transmission device 20-1, 20-2 is
By configuring it with EIC, not only can the device be made smaller, but also
Higher precision, lower power consumption, and lower costs are possible.
第５図（１） 、 （２）は本発明の他の実施例に係る
自動波長切換形波形多重光伝送装置の構成およびその使
用例を示す光伝送システム図であり、同図（１）は波長
λ１の光信号を右方向へ、波長λ２の光信号を左方向へ
伝送する場合のシステムが、同図（２）はその逆方向の
伝送システムがそれぞれ示されている。FIGS. 5(1) and 5(2) are optical transmission system diagrams showing the configuration and usage example of an automatic wavelength switching type waveform multiplexing optical transmission device according to another embodiment of the present invention, and FIG. A system for transmitting an optical signal of wavelength λ1 to the right and an optical signal of wavelength λ2 to the left is shown, and FIG. 2(2) shows a transmission system for the opposite direction.
第５図（１）において、自動波長切換形の波長多重光伝
送装置６０−１は、１心光ファイバ６１に接続されるも
ので、第１．第２のスイッチ７０−１１ 。In FIG. 5(1), an automatic wavelength switching type wavelength division multiplexing optical transmission device 60-1 is connected to a single-core optical fiber 61. Second switch 70-11.
７０−１２を有するスイッチ回路７０−１、スイッチ制
御回路７１−１、第１．第２の電気／光変換器（Ｅｌｏ
）７２−１１ 、７２−１２ 、第１．第２の光／電気
変換器（０／Ｅ）７３−１１．７３−２１ 、光合分波
器７４−１１ 、７４−１２、及び光分岐結合器７５−
１を備えている。70-12, a switch control circuit 71-1, a first . A second electrical/optical converter (Elo
)72-11, 72-12, 1st. Second optical/electrical converter (0/E) 73-11, 73-21, optical multiplexer/demultiplexer 74-11, 74-12, and optical branching coupler 75-
1.
第１．第２のスイッチ７０−１１ 、７０−１２を有す
るスイッチ回路７０−１は、スイッチ制御回路７１−１
から出力される制御信号により信号経路を切換える回
・路であり、そのうち第１のスイッチ７０−１１は入力
電気信＠ＳｉＡを切換えて電気／光変換器７２−１１ま
たは７２−１２に与え、第２のスイッチ７０−１２は光
／電気変換器７３−１１または７３−１２の出力側を切
換えて出力電気信号ＳｏＡを出力する機能を有している
。1st. A switch circuit 70-1 having second switches 70-11 and 70-12 is a switch control circuit 71-1.
A circuit that switches the signal path using a control signal output from the
- The first switch 70-11 switches the input electrical signal @SiA and supplies it to the electrical/optical converter 72-11 or 72-12, and the second switch 70-12 switches the input electrical signal @SiA to the electrical/optical converter 72-11 or 72-12. It has a function of switching the output side of 73-11 or 73-12 and outputting an output electric signal SoA.
スイッチ制御回路７１−１は、光／電気変換器７３−１
１ 。The switch control circuit 71-1 is an optical/electrical converter 73-1.
1.
７３−１２の出力に基づきスイッチ回路７０−１の切換
え動作を制御するための制御信号を出力する回路であり
、第１図のスイッチ制御回路３１−１と同様に、送受信
系形成の論理判断を行う機能を有している。This circuit outputs a control signal for controlling the switching operation of the switch circuit 70-1 based on the output of the switch circuit 73-12, and similarly to the switch control circuit 31-1 in FIG. It has the function to do.
第１．第２の電気／光変換器７２−１１ 、７２−１２
は入力電気信号ＳｉＡを波長λ１．λ２の光信号にそれ
ぞれ変換する回路、第１．第２の光／電気変換器７３−
１１ 、７３−１２は波長λ２．λ１の光信号をそれぞ
れ出力電気信号Ｓｏ＾に変換する回路である。1st. Second electrical/optical converter 72-11, 72-12
is input electric signal SiA at wavelength λ1. A circuit for converting each into an optical signal of λ2, 1st. Second optical/electrical converter 73-
11, 73-12 are wavelengths λ2. This is a circuit that converts each optical signal of λ1 into an output electrical signal So^.
光合分波器７４−１１ 、７４−１２は波長λ１．λ２
の光信号の合波または分波を行うもので、一方が前記電
気／光変換器７２−１１ 、７２−１２及び光／電気変
換器７３−１１ 、７３−１２に、他方が光分岐結合器
７５−１にそれぞれ接続されている。光分岐結合器７５
−１は光合分波器７４−１１または７４−１２の入出力
光を１心光ファイバ６１に振分けるものである。これら
の光合分波器７４−１１ 、７４−１２及び光分岐結合
器７５−１は光学系等で構成され、波長選択手段及び光
入出力 。The optical multiplexer/demultiplexers 74-11 and 74-12 have wavelengths λ1. λ2
One is connected to the electrical/optical converters 72-11, 72-12 and the optical/electrical converters 73-11, 73-12, and the other is an optical branching coupler. 75-1, respectively. Optical splitter coupler 75
-1 distributes the input and output light of the optical multiplexer/demultiplexer 74-11 or 74-12 to the single-core optical fiber 61. These optical multiplexer/demultiplexers 74-11, 74-12 and optical branching coupler 75-1 are composed of optical systems and the like, including wavelength selection means and optical input/output.
回路としての機能を有している。It has a function as a circuit.
以上のような自動波長切換形の波長多重光伝送装置６０
−１を用いて双方向２波多重伝送システムを構成する場
合、その波長多重光伝送装置６０−１と同一構造の波長
多重光伝送装置６０−２を１心光ファイバ６１に接続す
る。この波長多重光伝送装置６０−２は、入力電気信号
ＳｉＢの切換えを行う第１のスイッチ７０−２１と出力
電気信号ＳｏＢの切換えを行う第２のスイッチ７０−２
２とを有するスイッチ回路７０−２、このスイッチ回路
７０−２の切換え制御を行うスイッチ制御回路７１−２
、第１．第２の電気／光変換器（Ｅｌｏ）７２−２１．
７２−２２ 、第１．第２の光／電気変換器（０／Ｅ）
７３−２１．７３−２２ 、光合分波器７４−２１ 。Automatic wavelength switching type wavelength multiplexing optical transmission device 60 as described above
When configuring a bidirectional two-wave multiplexing transmission system using the wavelength division multiplexing optical transmission system 60-1, a wavelength division multiplexing optical transmission apparatus 60-2 having the same structure as the wavelength division multiplexing optical transmission apparatus 60-1 is connected to the single-core optical fiber 61. This wavelength multiplexing optical transmission device 60-2 includes a first switch 70-21 for switching an input electrical signal SiB and a second switch 70-2 for switching an output electrical signal SoB.
2, and a switch control circuit 71-2 that performs switching control of this switch circuit 70-2.
, 1st. Second electrical/optical converter (Elo) 72-21.
72-22, 1st. Second optical/electrical converter (0/E)
73-21.73-22, optical multiplexer/demultiplexer 74-21.
７４−２２ 、及び光分岐結合器７５−２で構成されて
いる。74-22, and an optical branching coupler 75-2.
第５図（２）は同図（１）と同一の双方向２波多重伝送
システムの構成図であり、波長多重光伝送装置６０−１
．６０−２中のスイッチ回路７０−１．７０−２の切換
えにより第５図（２）と逆方向の光伝送を行う例が示さ
れている。FIG. 5 (2) is a configuration diagram of the same bidirectional two-wave multiplexing transmission system as in FIG.
．． An example is shown in which optical transmission is performed in the opposite direction to that in FIG. 5(2) by switching the switch circuits 70-1 and 70-2 in 60-2.
第５図（１）において、一方の波長多重光伝送装置６０
−１の入力電気信号ＳｉＡは、次のルートを経由して他
方の波長多重光伝送装置７０−２の出力電気信号ＳｏＢ
となる。In FIG. 5(1), one wavelength multiplexing optical transmission device 60
-1's input electrical signal SiA is transmitted to the other wavelength multiplexed optical transmission device 70-2's output electrical signal SoB via the following route.
becomes.
入力電気信号ＳｉＡ→第１のスイッチ７０−１１→第１
の電気／光変換器７２−１１で波長λ１の光信号に変換
→光合分波器７４−１１→光分岐結合器７５−１→１心
光ファイバ６１→光分岐結合器７５−２→光合分波器７
４−２２→第２の光／電気変換器７３−２２で電気信号
に変換→第２のスイッチ７０−２２→出力電気信号Ｓｏ
Ｂ ０
また、他方の波長多重光伝送装置６０−２の入力電気信
ＱＳｉＢは、次のルートを経由して一方の波長多重光伝
送装置６０−１の出力電気信号ＳｏＡとなる。Input electric signal SiA→first switch 70-11→first
Electric/optical converter 72-11 converts it into an optical signal of wavelength λ1 → Optical multiplexer/demultiplexer 74-11 → Optical branch/coupler 75-1 → Single-core optical fiber 61 → Optical branch/coupler 75-2 → Optical multiplexer/demultiplexer 75-1 Wave device 7
4-22 → Converted to electrical signal by second optical/electrical converter 73-22 → Second switch 70-22 → Output electrical signal So
B 0 Further, the input electrical signal QSiB of the other wavelength division multiplexing optical transmission device 60-2 becomes the output electrical signal SoA of the one wavelength division multiplexing optical transmission device 60-1 via the following route.
入力電気信号ＳｉＢ→第１のスイッチ７０−２１→第２
の電気／光変換器７２−２２で波長λ２の光信号に変換
→光合分波器７４−２２→光分岐結合器７５−２→１心
光ファイバ６１→光分岐結合器７５−１→光合分波器７
４−１ｔ→第１の光／電気変換器７３−１１で電気信号
に変換→第２のスイッチ７０−１２→出力電気信号Ｓｏ
Ａ 。Input electric signal SiB→first switch 70-21→second
Electric/optical converter 72-22 converts it into an optical signal of wavelength λ2 → Optical multiplexer/demultiplexer 74-22 → Optical splitter/coupler 75-2 → Single-core optical fiber 61 → Optical splitter/coupler 75-1 → Optical multiplexer/demultiplexer 75-2 Wave device 7
4-1t→converted to electrical signal by first optical/electrical converter 73-11→second switch 70-12→output electrical signal So
A.
第５図（２）の場合、は、各スイッチ７０−１１ 。In the case of FIG. 5(2), is each switch 70-11.
７０−１２ 、７０−２１ 、７０−２２の切換え方向
を逆にし、各波長多重光伝送装置６０−１．６０−２の
送受信波長λ１．λ２を第５図（１）の場合と逆にして
いる。The switching directions of 70-12, 70-21, and 70-22 are reversed, and the transmitting and receiving wavelengths λ1. λ2 is reversed from that in FIG. 5(1).
そして第５図（１） 、 （２）のスイッチ制御回路７
１−１．７１−２は、第３図のフローチャートに従って
動作し、それによって第１図の実施例と同様の利点が得
られる。And the switch control circuit 7 in Fig. 5 (1) and (2)
1-1.71-2 operates according to the flowchart of FIG. 3, thereby providing similar advantages to the embodiment of FIG.
第６図は第５図中の波長多重光伝送装＠６０−１゜６０
−２のうち、例えば一方の波長多重光伝送装置６０−１
の実装例を示す斜視図である。Figure 6 shows the wavelength multiplexed optical transmission system in Figure 5 @60-1゜60
-2, for example, one wavelength multiplexing optical transmission device 60-1
FIG. 2 is a perspective view showing an example of implementation.
この波長多重光伝送装置６０−１は、スイッチ７０−１
１ 、７０−１２ 、スイッチ制御回路７１−１、電気
／光変換器７２−１１ 、７２−１２ 、光／電気変換
器７３−１１ 。This wavelength division multiplexing optical transmission device 60-1 includes a switch 70-1
1, 70-12, switch control circuit 71-1, electrical/optical converters 72-11, 72-12, optical/electrical converter 73-11.
７３−１２ 、光合分波器７４−１１ 、７４−１２
、及び光分岐結合器７５−１が０ＥＩＣで構成され、そ
れが基板８０上に形成されている。このように波長多重
光伝送装置６０−１．６０−２を０ＥＩＣで構成するこ
とにより、装置の小型化、高精度化、低消費電力化及び
低コスト化が可能となる。73-12, optical multiplexer/demultiplexer 74-11, 74-12
, and the optical branching coupler 75-1 are composed of 0EIC, which is formed on the substrate 80. By configuring the wavelength division multiplexing optical transmission device 60-1, 60-2 with 0EIC in this way, it becomes possible to make the device smaller, more accurate, lower in power consumption, and lower in cost.
（発明の効果）
以上詳細に説明したように、本発明によれば、受信波長
を検出して自動的に送信波長を決定するスイッチ制御回
路の出力制御信号により第１と第２のスイッチを切換え
、その第１のスイッチで入力電気信号を切換えて入力す
ると共に、第２のスイッチで出力電気信号を切換えて出
力するようにしたので、１種類の波長多重光伝送装置を
用いて１心光ファイバによる双方向伝送が可能となる。(Effects of the Invention) As described above in detail, according to the present invention, the first and second switches are switched by the output control signal of the switch control circuit that detects the reception wavelength and automatically determines the transmission wavelength. , the first switch switches and inputs the input electrical signal, and the second switch switches and outputs the output electrical signal, so one type of wavelength division multiplexing optical transmission device is used to connect a single optical fiber. bidirectional transmission is possible.
しかも波長多重光伝送装置は互換性を有するため、使い
勝手の向上と低コスト化が期待できる。ざらに、送受信
機構を２系統有しているので、一方が故障した場合にも
、他方がバックアップ回路として動作するため、信頼性
が向上する。Furthermore, since the wavelength division multiplexing optical transmission device is compatible, it can be expected to improve usability and reduce costs. Roughly speaking, since it has two systems of transmitting and receiving mechanisms, even if one fails, the other operates as a backup circuit, improving reliability.
第１図（１） 、 （２）は本発明の実施例を示す自動
波長切換形波長多重光伝送装置の構成及び使用例を示す
光伝送システム図、第２図は従来の波長多重光伝送装置
の構成及び使用例を示す光伝送システム図、第３図は第
１図の動作フローチャート、第４図は第１図の実装例を
示す斜視図、第５図（１） 、 （２）は本発明の他の
実施例を示す自動波長切換形波長多重光伝送装置の構成
及び使用例を示す光伝送システム図、第６図は第５図の
実装例を示す斜視図である。
２０−１．２０−２．６０−１．６０−２・・・・・・
波長多重光伝送装置、２１．６１・・・・・・１心光フ
ァイバ、３０−１．３０−２゜７０−１．７０−２・・
・・・・スイッチ回路、３０−１１ 、３０−２１ 。
７０−１１ 、７０−２１・・・・・・第１のスイッチ
、３０−１２ 。
３０−２２ 、７０−１２ 、７０−２２・・・・・・
第２のスイッチ、３１−１．３１−２．７１−１．７１
−２・・・・・・スイッチ制御回路、３５−１ｔ 、
３５−１２ 、３５−２１ 、３５−２２・・・・・・
発光素子、３６−１１ 、３６−１２ 、３８−２１
、３６−２２・・・・・・受光素子、３４−１．３４−
２・・・・・・ハイブリッド光合分波器、３４−１ａ
。
３４−２８・・・・・・入出力ポート、３４−１ｂ 、
３４−２ｂ・・・・・・共通ポート、７２−１１ 、
７２−２１・・・・・・第１の電気／光変換器、７２−
１２ 、７２−２２・・・・・・第２の電気／光変換器
、７３−１１ 、７３−２１・・・・・・第１の光／電
気変換器、７３−１２ 、７３−２２・・・・・・第２
の光／電気変換器、７４−１１ 、７４−１２ 、７４
−２１ 、７４−２２・・・・・・光合分波器、７５−
１．７５−２・・・・・・光分岐結合器。
出願人代理人 柿 本 恭 成第１図の蛎乍フ
ローチマート
第１図の実装例
第４図Figures 1 (1) and (2) are optical transmission system diagrams showing the configuration and usage example of an automatic wavelength switching type wavelength division multiplexing optical transmission apparatus according to an embodiment of the present invention, and Figure 2 is a diagram of a conventional wavelength division multiplexing optical transmission apparatus. Figure 3 is an operation flowchart of Figure 1, Figure 4 is a perspective view of the implementation example of Figure 1, Figures 5 (1) and (2) are FIG. 6 is an optical transmission system diagram showing a configuration and usage example of an automatic wavelength switching type wavelength division multiplexing optical transmission device showing another embodiment of the invention. FIG. 6 is a perspective view showing an example of implementation of FIG. 5. 20-1.20-2.60-1.60-2...
Wavelength multiplexing optical transmission device, 21.61...1-core optical fiber, 30-1.30-2゜70-1.70-2...
...Switch circuit, 30-11, 30-21. 70-11, 70-21...first switch, 30-12. 30-22, 70-12, 70-22...
Second switch, 31-1.31-2.71-1.71
-2...Switch control circuit, 35-1t,
35-12, 35-21, 35-22...
Light emitting element, 36-11, 36-12, 38-21
, 36-22... Light receiving element, 34-1.34-
2...Hybrid optical multiplexer/demultiplexer, 34-1a
. 34-28...Input/output port, 34-1b,
34-2b...Common port, 72-11,
72-21...first electrical/optical converter, 72-
12, 72-22... Second electrical/optical converter, 73-11, 73-21... First optical/electrical converter, 73-12, 73-22. ...Second
optical/electrical converters, 74-11, 74-12, 74
-21, 74-22... Optical multiplexer/demultiplexer, 75-
1.75-2... Optical branching coupler. Applicant's agent: Yasushi Kakimoto Figure 4: Implementation example of the Kazutani Flowtime Mart in Figure 1 shown in Figure 1
Claims (1)
２の波長の光信号をそれぞれ入出力する先入出力回路と
、 前記第１と第２の波長を選択する波長選択手段と、 前記第１の波長の光信号を電気信号に変換する第１の光
／電気変換器、及び電気信号を前記第１の波長の光信号
に変換する第１の電気／光変換器と、 前記第２の波長の光信号を電気信号に変換する第２の光
／電気変換器、及び電気信号を前記第２の波長の光信号
に変換する第２の電気／光変換器と、 制御信号に基づき入力電気信号を前記第１と第２の電気
／光変換器側に切換えて供給する第１のスイッチと、 制御信号に基づき前記第１と第２の光／電気変換器の出
力電気信号を切換えて出力する第２のスイッチと、 前記第１と第２の光／電気変換器の出力電気信号に基づ
き前記各制御信号を出力するスイッチ制御回路とを、 備えたことを特徴とする自動波長切換形波長多重光伝送
装置。 ２、前記光入出力回路、波長選択手段、第１、第２の電
気／光変換器、及び第１、第２の光／電気変換器は、複
数の入出力ポートの各光波長に適合した発光素子及び受
光素子がそれら各入出力ポートに併設され、その入出力
ポートに供給される入力電気信号を該発光素子により光
信号に変換して共通ポートへ送出し、かつその共通ポー
トから入光する光信号を該受光素子により出力電気信号
に変換して該入出力ポートから出力する発受光素子併設
形光合分波器で構成した特許請求の範囲第１項記載の自
動波長切換形波長多重光伝送装置。 ３、前記光入出力回路及び波長選択手段は、１つの光分
岐結合器及び２つの光合分波器で構成した特許請求の範
囲第１項記載の自動波長切換形波長多重光伝送装置。 ４、前記第１、第２のスイッチの切換え動作に連動して
オフ状態下にある第１、第２の光／電気変換器及び第１
、第２の電気／光変換器の電源が切られる特許請求の範
囲第１項記載の自動波長切換形波長多重光伝送装置。 ５、前記光入出力回路、波長選択手段、第１、第２の光
／電気変換器、第１、第２の電気／光変換器、第１、第
２のスイッチ、及びスイッチ制御回路を光電子集積回路
で構成した特許請求の範囲第１項記載の自動波長切換形
波長多重光伝送装置。 ６、前記スイッチ制御回路は、前記第１と第２の光／電
気変換器の出力電気信号に基づき送受信系形成の論理判
断を行い、それに応じた制御信号を出力する構成にした
特許請求の範囲第１項記載の自動波長切換形波長多重光
伝送装置。[Scope of Claims] A first input/output circuit that respectively inputs and outputs optical signals of first and second wavelengths transmitted bidirectionally using a single-core optical fiber, and selects the first and second wavelengths. a first optical/electrical converter that converts an optical signal of the first wavelength into an electrical signal; and a first electrical/optical converter that converts the electrical signal into an optical signal of the first wavelength. a converter; a second optical/electrical converter that converts the optical signal at the second wavelength into an electrical signal; and a second electrical/optical converter that converts the electrical signal into an optical signal at the second wavelength. a first switch that switches and supplies an input electrical signal to the first and second electrical/optical converters based on a control signal; and a first switch that switches and supplies an input electrical signal to the first and second electrical/optical converters based on a control signal. and a switch control circuit that outputs each of the control signals based on the output electrical signals of the first and second optical/electrical converters. Automatic wavelength switching type wavelength division multiplexing optical transmission equipment. 2. The optical input/output circuit, the wavelength selection means, the first and second electrical/optical converters, and the first and second optical/electrical converters are adapted to each optical wavelength of the plurality of input/output ports. A light-emitting element and a light-receiving element are attached to each input/output port, and the light-emitting element converts an input electrical signal supplied to the input/output port into an optical signal, sends it to a common port, and receives light from the common port. The automatic wavelength switching type wavelength multiplexing light according to claim 1, which comprises an optical multiplexer/demultiplexer with a light emitting/receiving element that converts an optical signal into an output electric signal by the light receiving element and outputs it from the input/output port. Transmission device. 3. The automatic wavelength switching type wavelength division multiplexing optical transmission apparatus according to claim 1, wherein the optical input/output circuit and the wavelength selection means are constituted by one optical branching/coupling device and two optical multiplexing/demultiplexing devices. 4. The first and second optical/electrical converters are in an off state in conjunction with the switching operations of the first and second switches, and the first
2. The automatic wavelength switching type wavelength division multiplexing optical transmission apparatus according to claim 1, wherein the power of the second electrical/optical converter is turned off. 5. The optical input/output circuit, the wavelength selection means, the first and second optical/electrical converters, the first and second electric/optical converters, the first and second switches, and the switch control circuit are arranged in a photoelectronic manner. An automatic wavelength switching type wavelength division multiplexing optical transmission device according to claim 1, which is constructed of an integrated circuit. 6. The scope of the present invention is characterized in that the switch control circuit is configured to make a logical judgment for forming a transmitting/receiving system based on the output electric signals of the first and second optical/electrical converters, and output a control signal in accordance with the logical judgment. 2. The automatic wavelength switching type wavelength division multiplexing optical transmission device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62061922A JPS63227225A (en) | 1987-03-17 | 1987-03-17 | Automatic wavelength switching type wavelength multiplex optical transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62061922A JPS63227225A (en) | 1987-03-17 | 1987-03-17 | Automatic wavelength switching type wavelength multiplex optical transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63227225A true JPS63227225A (en) | 1988-09-21 |
Family
ID=13185137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62061922A Pending JPS63227225A (en) | 1987-03-17 | 1987-03-17 | Automatic wavelength switching type wavelength multiplex optical transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63227225A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004056020A1 (en) * | 2002-12-13 | 2004-07-01 | Allied-Telesis, K.K. | Optical transmitter/receiver and method for selecting optical wavelength automatically |
| WO2011120460A3 (en) * | 2011-05-05 | 2012-04-19 | 华为技术有限公司 | Single fiber bi-directional optical module, transport system and method based on single fiber bi-directional optical modules |
| JP2013016997A (en) * | 2011-07-01 | 2013-01-24 | Furukawa Electric Co Ltd:The | Distribution system communication route controller and communication route control system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62291226A (en) * | 1986-06-11 | 1987-12-18 | Hitachi Ltd | Bidirectional optical communicating system |
-
1987
- 1987-03-17 JP JP62061922A patent/JPS63227225A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62291226A (en) * | 1986-06-11 | 1987-12-18 | Hitachi Ltd | Bidirectional optical communicating system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004056020A1 (en) * | 2002-12-13 | 2004-07-01 | Allied-Telesis, K.K. | Optical transmitter/receiver and method for selecting optical wavelength automatically |
| WO2011120460A3 (en) * | 2011-05-05 | 2012-04-19 | 华为技术有限公司 | Single fiber bi-directional optical module, transport system and method based on single fiber bi-directional optical modules |
| JP2014514878A (en) * | 2011-05-05 | 2014-06-19 | 華為技術有限公司 | Single fiber bi-directional optical module, transport system and method based on single fiber bi-directional optical module |
| US9419706B2 (en) | 2011-05-05 | 2016-08-16 | Huawei Technologies Co., Ltd. | Single fiber bi-directional optical module, and transport system and method based thereon |
| JP2013016997A (en) * | 2011-07-01 | 2013-01-24 | Furukawa Electric Co Ltd:The | Distribution system communication route controller and communication route control system |
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