JPS604903A - Optical demultiplexer and multiplexer - Google Patents
Optical demultiplexer and multiplexerInfo
- Publication number
- JPS604903A JPS604903A JP11273283A JP11273283A JPS604903A JP S604903 A JPS604903 A JP S604903A JP 11273283 A JP11273283 A JP 11273283A JP 11273283 A JP11273283 A JP 11273283A JP S604903 A JPS604903 A JP S604903A
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelength
- multiplexer
- station
- transmission line
- 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.)
- Pending
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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/29395—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device configurable, e.g. tunable or reconfigurable
-
- 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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
- G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
-
- 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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は光分合波器に係り、特に光フアイバ通信の光波
長分割多重方式に好適な光ファイバの故障点探知を容易
に可能とする光分合波器に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an optical demultiplexer/multiplexer, and in particular, to an optical demultiplexer that enables easy detection of failure points in an optical fiber suitable for optical wavelength division multiplexing in optical fiber communication. Regarding demultiplexer/multiplexer.
一般に光分合波器は、光ファイバの故障点探知の事はほ
とんど考慮に入れずに作られているので、故障点探知を
行おうとすると、この光分合波器での損失が大きく、長
距離における故障点探知ができないというような欠点が
あった。In general, optical demultiplexers and multiplexers are manufactured without taking into consideration the detection of fault points in optical fibers, so if you try to find a fault point, the loss in this optical demultiplexer and multiplexer will be large and it will take a long time. There were drawbacks such as the inability to detect failure points over long distances.
本発明の目的は光フアイバ通信において、光波長分割多
重方式を用いたときの光フアイバ故障点探知が容易に可
能とする方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for easily detecting a fault point in an optical fiber when using an optical wavelength division multiplexing method in optical fiber communication.
本発明は上記目的を達成するために、光波長分割多重方
式では光分合波器を伝送路の両側に一個づつ設け、この
光分合波器内に反射鏡を備え、通常の通信の場合は光路
を遮えぎらない方向に位置づけ、通信が速断えたような
、即ち光ファイバに異常が生じたときには、伝送路に対
し反射鏡として働くように位置するように可動せしめ得
るようにして故障診断を可能にしたものである。In order to achieve the above object, the present invention provides one optical demultiplexer/multiplexer on each side of a transmission line in the optical wavelength division multiplexing system, and includes a reflecting mirror in the optical demultiplexer/multiplexer. The optical fiber is positioned in a direction that does not block the optical path, and in the event of a sudden communication breakdown, i.e., an abnormality occurs in the optical fiber, it can be moved to act as a reflector for the transmission path, allowing troubleshooting. This is what made it possible.
以下、本発明の一実施例を第１図および第２図により説
明する。第１図はＡ局側の光送信器１．２からそれぞれ
波長λ１．λ２の光信号がＢ局側に送信され、受信器６
ではＢ局側からの波長λ３の光信号が受信される。Ｂ局
側１２はこれに対応した受信器７．８および送信器９が
設けられている。Ａ局側とＢ局側との間には１本の光フ
ァイバ５と、Ａ局側光分合波器４およびＢ局側光分合波
器６とで伝送路が構成されている。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows wavelengths λ1, . The optical signal of λ2 is transmitted to the B station side, and the receiver 6
Then, an optical signal of wavelength λ3 from the B station side is received. The B station side 12 is provided with a corresponding receiver 7.8 and transmitter 9. A transmission path is constructed between the A station side and the B station side by one optical fiber 5, an A station side optical demultiplexer/multiplexer 4, and a B station side optical demultiplexer/multiplexer 6.
このとき例えば第２図に示すようにＡ局側の光分合波器
４は波長λｌ、λ２に対しそれぞれ人カポ−Ｎ０，１１
、波長λ３に１対し出力ポート１２をそれぞれ具備し、
伝送路ポート１８を設け、分合波のため波長λ１を全反
射する反射鏡１３．波長λ２を全反射し波長λ１を通過
させる反射鏡１４．波長λ３を通過し波長λ１．λ２を
全反射させる反射鏡１５をそれぞれ具備している。さら
に、伝送路ポート側に波長λ１．λ２およびλ３を全反
射する反射鏡１６を具備し、該反射鏡は点線で示した位
置１７まで可動する。このように伝送路ポート側に可動
する反射鏡を設けることにより、通常通信の場合反射鏡
１６の位置で通常の光分合波器を構成し、異常時破線で
示す１７の位置で送信ボー）１０．１１からの波長λ１
．λ２の光信号を全反射させ受信ポート１２に折返す。At this time, for example, as shown in FIG.
, each having one output port 12 for wavelength λ3,
A reflection mirror 13 is provided with a transmission line port 18 and totally reflects the wavelength λ1 for demultiplexing and multiplexing. A reflecting mirror 14 that totally reflects the wavelength λ2 and passes the wavelength λ1. Wavelength λ3 passes through wavelength λ1. Each of them is equipped with a reflecting mirror 15 that totally reflects λ2. Furthermore, wavelength λ1. A reflecting mirror 16 that totally reflects λ2 and λ3 is provided, and the reflecting mirror is movable to a position 17 shown by a dotted line. In this way, by providing a movable reflector on the transmission line port side, a normal optical demultiplexer/multiplexer is configured at the position of the reflector 16 during normal communication, and when an abnormality occurs, the transmitting baud is set at the position 17 shown by the broken line. Wavelength λ1 from 10.11
．． The optical signal of λ2 is totally reflected and returned to the receiving port 12.
この場合、Ｂ局側で波長λ３を観測またはＡ局側でＢ局
側からの反射光、λｌ。In this case, the wavelength λ3 is observed on the B station side, or the reflected light from the B station side, λl, is observed on the A station side.
λ２を観、測することで伝送路５の故障点を知ることが
できる。By observing and measuring λ2, the failure point of the transmission line 5 can be known.
本発明によれば、光波長分割多重における光フアイバ伝
送路の故障点探知を容易に可能ならしめるので保全の点
での効果が大きい。According to the present invention, it is possible to easily detect a fault point in an optical fiber transmission line in optical wavelength division multiplexing, and therefore it is highly effective in terms of maintenance.
図はいずれも本発明の一実施例を示すもので第１図は光
ファイバにおける光波長分割多重方式の原理図１．−２
図は光分合波器の原理的な構成図を示す。
４・・・光分合波器
１３、１４．１５・・・光分合波反射鏡１６・・・町動
反射嬢８Each of the figures shows an embodiment of the present invention, and Fig. 1 is a diagram illustrating the principle of optical wavelength division multiplexing in an optical fiber. -2
The figure shows the basic configuration of an optical demultiplexer/multiplexer. 4... Optical demultiplexer/combiner 13, 14.15... Optical demultiplex/multiplex reflector 16... Town movement reflector 8
Claims (1)
波器において、伝送路側に反射させる反射鏡を具備し、
該反射鏡が可動し得るようになっていることを堝″徴と
した光分合波器。An optical demultiplexer/multiplexer that demultiplexes and multiplexes at least one or more optical wavelengths, comprising a reflecting mirror that reflects the light toward the transmission line,
An optical demultiplexer/multiplexer whose characteristic is that the reflecting mirror is movable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11273283A JPS604903A (en) | 1983-06-24 | 1983-06-24 | Optical demultiplexer and multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11273283A JPS604903A (en) | 1983-06-24 | 1983-06-24 | Optical demultiplexer and multiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS604903A true JPS604903A (en) | 1985-01-11 |
Family
ID=14594152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11273283A Pending JPS604903A (en) | 1983-06-24 | 1983-06-24 | Optical demultiplexer and multiplexer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604903A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9927116B2 (en) | 2013-11-01 | 2018-03-27 | Panasonic Intellectual Property Management Co., Ltd. | Exhaust heat recovery apparatus, heating system, steam boiler, and deodorization system |
-
1983
- 1983-06-24 JP JP11273283A patent/JPS604903A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9927116B2 (en) | 2013-11-01 | 2018-03-27 | Panasonic Intellectual Property Management Co., Ltd. | Exhaust heat recovery apparatus, heating system, steam boiler, and deodorization system |
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