JPS56156037A - Optical signal switching system - Google Patents

Optical signal switching system

Info

Publication number
JPS56156037A
JPS56156037A JP5869080A JP5869080A JPS56156037A JP S56156037 A JPS56156037 A JP S56156037A JP 5869080 A JP5869080 A JP 5869080A JP 5869080 A JP5869080 A JP 5869080A JP S56156037 A JPS56156037 A JP S56156037A
Authority
JP
Japan
Prior art keywords
light
connector
port part
reflection factor
transmitted
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
JP5869080A
Other languages
Japanese (ja)
Inventor
Hiroshi Kawakami
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.)
Fuji Facom Corp
Original Assignee
Fuji Facom Corp
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 Fuji Facom Corp filed Critical Fuji Facom Corp
Priority to JP5869080A priority Critical patent/JPS56156037A/en
Publication of JPS56156037A publication Critical patent/JPS56156037A/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
    • 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

Abstract

PURPOSE:To reduce an attenuation in transmission and thus increase the reliability, by installing a light branching device at a port part to control both the reflection factor and the transmission factor of the light to the incident light by the applied voltage. CONSTITUTION:The incident light supplied through a connector 11 of a port part 3 is branched to a light branching device 14a and a connector 11b through a light branching device 14. The light branched by the device 14a is transmitted to the next port part via a connector 11a. On the other hand, the light branched by the connector 11b is supplied to an application device 4, and the light sent from the device 4 is transmitted to the next port part via a connector 11c, the device 14a and the connector 11a each. The devices 14 and 14a can control the reflection factor of light by the applied voltage, and accordingly the reflection factor is usually set at 1. However, in case the device 4 has some fault, a switch 15 is changed over to set the reflection factor at 0. Then the light is transmitted to the next port part after by-passing the device 4.
JP5869080A 1980-05-06 1980-05-06 Optical signal switching system Pending JPS56156037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5869080A JPS56156037A (en) 1980-05-06 1980-05-06 Optical signal switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5869080A JPS56156037A (en) 1980-05-06 1980-05-06 Optical signal switching system

Publications (1)

Publication Number Publication Date
JPS56156037A true JPS56156037A (en) 1981-12-02

Family

ID=13091538

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5869080A Pending JPS56156037A (en) 1980-05-06 1980-05-06 Optical signal switching system

Country Status (1)

Country Link
JP (1) JPS56156037A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713599A (en) * 1980-06-30 1982-01-23 Tokyo Shibaura Electric Co Method of transmitting information for vehicle
JPS60141054A (en) * 1983-12-28 1985-07-26 Nec Corp Light nrz-rz code converting circuit
JP2007067944A (en) * 2005-08-31 2007-03-15 Fujitsu Ltd Upgrade method of optical node and optical node apparatus
JP2007228151A (en) * 2006-02-22 2007-09-06 Mitsubishi Electric Corp System and circuit for signal switching communication system where repeater exists

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713599A (en) * 1980-06-30 1982-01-23 Tokyo Shibaura Electric Co Method of transmitting information for vehicle
JPS60141054A (en) * 1983-12-28 1985-07-26 Nec Corp Light nrz-rz code converting circuit
JP2007067944A (en) * 2005-08-31 2007-03-15 Fujitsu Ltd Upgrade method of optical node and optical node apparatus
JP4678647B2 (en) * 2005-08-31 2011-04-27 富士通株式会社 Optical node upgrade method and optical node device
JP2007228151A (en) * 2006-02-22 2007-09-06 Mitsubishi Electric Corp System and circuit for signal switching communication system where repeater exists

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