JPS615046U

JPS615046U - Bidirectional optical transmission equipment

Info

Publication number: JPS615046U
Application number: JP1984088114U
Authority: JP
Inventors: 千隆小西; 徹浜中
Original assignee: 日本電気株式会社
Priority date: 1984-06-15
Filing date: 1984-06-15
Publication date: 1986-01-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案に係わる双方向光伝送装置の一実施例を
示す系統図であり、第２図、第３図は同装置の他の実施
例を示す系統図である。１０．２０・・・光端局中継装置、１１．２１・・・光
送信盤、１２．２２・・・光受信盤、１３．２３・・・
符号変換盤、１４．２４・・・出力制御系、１５．２５
・・・重畳制御系、１６．２６・・・入力端子、１７，
２７・・・出力端子、１８．２８・・・解除制御系、３
０〜３５・・・光ファイバケーブル、４０１〜４０ｎ，
５０１〜５０ｎ・・・光中継器。FIG. 1 is a system diagram showing one embodiment of a bidirectional optical transmission device according to the present invention, and FIGS. 2 and 3 are system diagrams showing other embodiments of the same device. 10.20... Optical terminal repeater, 11.21... Optical transmitting board, 12.22... Optical receiving board, 13.23...
Code conversion board, 14.24...Output control system, 15.25
...Superimposition control system, 16.26...Input terminal, 17,
27... Output terminal, 18.28... Release control system, 3
0~35...Optical fiber cable, 401~40n,
501-50n...Optical repeater.

Claims

[Scope of utility model registration request]

In a bidirectional optical transmission system comprising first and second tip end station repeaters and first and second optical fiber cables that bidirectionally connect the first and second optical end station repeaters. , the first and second optical terminal relay devices each include an optical transmission board that converts an electrical transmission signal into an optical transmission signal and sends it out, and also cuts off the optical output according to a control signal, and an optical transmission panel that converts the optical transmission signal into an electrical transmission signal. An optical receiver panel that converts the optical fiber into an optical receiver, which generates an abnormal signal when the electrical transmission signal disappears due to a break in the optical fiber cable, and when it receives an electrical transmission signal with an abnormal signal superimposed on it, extracts this abnormal signal and sends it. a code conversion board that converts communication information into an electrical transmission signal and converts a received electrical transmission signal into communication information; a superimposition control system that superimposes an abnormal signal generated in the code conversion board onto the electrical transmission signal; and a code conversion system. 1. A bidirectional optical transmission device comprising: an output control system that generates a control signal for cutting off optical output of the optical transmitting board based on an abnormal signal extracted by the board.