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JPS5723343A - Looped optical transmission system - Google Patents

Looped optical transmission system

Info

Publication number
JPS5723343A
JPS5723343A JP9836680A JP9836680A JPS5723343A JP S5723343 A JPS5723343 A JP S5723343A JP 9836680 A JP9836680 A JP 9836680A JP 9836680 A JP9836680 A JP 9836680A JP S5723343 A JPS5723343 A JP S5723343A
Authority
JP
Japan
Prior art keywords
wavelength
optical transmission
equipment
station
receive
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
JP9836680A
Other languages
Japanese (ja)
Inventor
Takashi Tsutsuizumi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9836680A priority Critical patent/JPS5723343A/en
Publication of JPS5723343A publication Critical patent/JPS5723343A/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
    • H04B10/27—Arrangements for networking
    • 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
    • H04B10/27—Arrangements for networking
    • H04B10/275—Ring-type networks
    • H04B10/2755—Ring-type networks with a headend

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To transmit and receive smoothly in the event of a fault by use of one transmission line, by using a light source having each different wavelength, for three optical transmission and receiving equipments which are adjoining each other, so that each of them is able to receive the wavelength of other equipment, and is unable to receive the wavelength of its own equipment. CONSTITUTION:An optical transmission loop is constituted by connecting the center 100 and stations 101-105 with one optical transmission line 200. Each of optical transmission equipments 300-305 has a light source whose three adjoining light emission wavelength is different from each other, and each receiving equipment has optical branching filters 700-705 by which other two wavelength being different from light emission wavelength of its own transmission equipment is made to branch selectively, respectively, and photodetecting elements 400-405 and 500-505. According to this constitution the station 101 which has received a signal from the center 100 extracts a signal component to its own station, adds a signal to be transmitted, and transmits it to the station 102 by wavelength of its own equipment, therefore, communication by loop-back is executed in the event of a fault.
JP9836680A 1980-07-17 1980-07-17 Looped optical transmission system Pending JPS5723343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9836680A JPS5723343A (en) 1980-07-17 1980-07-17 Looped optical transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9836680A JPS5723343A (en) 1980-07-17 1980-07-17 Looped optical transmission system

Publications (1)

Publication Number Publication Date
JPS5723343A true JPS5723343A (en) 1982-02-06

Family

ID=14217874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9836680A Pending JPS5723343A (en) 1980-07-17 1980-07-17 Looped optical transmission system

Country Status (1)

Country Link
JP (1) JPS5723343A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143148U (en) * 1983-03-15 1984-09-25 株式会社山武 Optical multiplex transmission equipment
US4653042A (en) * 1983-10-25 1987-03-24 Thomson-Csf Device for storing information in an optical fiber transmission system
US5223967A (en) * 1986-06-11 1993-06-29 Mcdonnell Douglas Corporation Secure communications system
US5422772A (en) * 1989-08-28 1995-06-06 Mcdonnell Douglas Corporation Secure fiber optic networks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143148U (en) * 1983-03-15 1984-09-25 株式会社山武 Optical multiplex transmission equipment
US4653042A (en) * 1983-10-25 1987-03-24 Thomson-Csf Device for storing information in an optical fiber transmission system
US5223967A (en) * 1986-06-11 1993-06-29 Mcdonnell Douglas Corporation Secure communications system
US5422772A (en) * 1989-08-28 1995-06-06 Mcdonnell Douglas Corporation Secure fiber optic networks

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