JPS63114543U

JPS63114543U -

Info

Publication number: JPS63114543U
Application number: JP1987006178U
Authority: JP
Priority date: 1987-01-20
Filing date: 1987-01-20
Publication date: 1988-07-23

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す図、第２図
は従来の光データ伝送装置を示す図である。図において、１は第１の光送信器、２は第２の
光送信器、３は第１の光信号、４は第２の光信号
、５は第１の光フアイバ、６は第２の光フアイバ
、７は第１の光受信器、８は第２の光受信器、９
はスイツチ、１０はレベル比較回路、１１は選択
回路である。なお、各図中同一符号は同一または
相当部分を示す。 FIG. 1 is a diagram showing an embodiment of this invention, and FIG. 2 is a diagram showing a conventional optical data transmission device. In the figure, 1 is a first optical transmitter, 2 is a second optical transmitter, 3 is a first optical signal, 4 is a second optical signal, 5 is a first optical fiber, and 6 is a second optical fiber. optical fiber, 7 is a first optical receiver, 8 is a second optical receiver, 9
1 is a switch, 10 is a level comparison circuit, and 11 is a selection circuit. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

First and second optical transmitters that convert electrical signals into optical signals, first and second optical fibers that transmit optical signals, and first and second optical receivers that reproduce electrical signals from optical signals. an output selection circuit that selects and outputs one of the electrical signals regenerated by the first and second optical receivers, and compares the light reception levels of the first and second optical receivers. An optical data transmission device comprising a level comparison circuit that outputs a control signal so that a selection circuit selects the output of an optical receiver having a high received light level.