JPS5573152A - Optical transmitter - Google Patents

Optical transmitter

Info

Publication number
JPS5573152A
JPS5573152A JP14738778A JP14738778A JPS5573152A JP S5573152 A JPS5573152 A JP S5573152A JP 14738778 A JP14738778 A JP 14738778A JP 14738778 A JP14738778 A JP 14738778A JP S5573152 A JPS5573152 A JP S5573152A
Authority
JP
Japan
Prior art keywords
optical
signal
light
input
transmitter
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
Application number
JP14738778A
Other languages
Japanese (ja)
Inventor
Naoki Yoshinari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP14738778A priority Critical patent/JPS5573152A/en
Publication of JPS5573152A publication Critical patent/JPS5573152A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To secure continuance of the repeating action for the transmission line signals through formation of the optical by-pass circuit even when the optical transmitter has some trouble by installing the optical branch part, the optical cut-off part and the optical coupling part each between the transmission lines of the input and output sides. CONSTITUTION:Optical branching unit 12 is provided between the transmission lines of the input and output sides, and input optical signal Si is divided into two parts through branching half-mirror 12b. Thus reflected light Sr of one side is led into optical receiver 14; while transmitted light Sp of the other side is led into shutter 16b of optical breaker 16 each. Light Sr goes up to receiver 14 and then converted into the electric signal to be supplied to the reception circuit, and at the same time converted into the optical signal again at optical transmitter 22 via signal switch gate 21 to be delivered via optical coupler 18. On the other hand, light Sp actuates shutter driving circuit 16c by the optical by-pass command to open shutter 16d to be delivered through coupler 18. Accordingly, the repeating action can be continued for the transmission line signal even when transmitter 1 has some trouble.
JP14738778A 1978-11-28 1978-11-28 Optical transmitter Pending JPS5573152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14738778A JPS5573152A (en) 1978-11-28 1978-11-28 Optical transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14738778A JPS5573152A (en) 1978-11-28 1978-11-28 Optical transmitter

Publications (1)

Publication Number Publication Date
JPS5573152A true JPS5573152A (en) 1980-06-02

Family

ID=15429096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14738778A Pending JPS5573152A (en) 1978-11-28 1978-11-28 Optical transmitter

Country Status (1)

Country Link
JP (1) JPS5573152A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5737942A (en) * 1980-08-13 1982-03-02 Toshiba Corp Optical signal relay system
US4783851A (en) * 1984-01-27 1988-11-08 Yokogawa Electric Corporation Optical communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5737942A (en) * 1980-08-13 1982-03-02 Toshiba Corp Optical signal relay system
US4783851A (en) * 1984-01-27 1988-11-08 Yokogawa Electric Corporation Optical communication system

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