JPS55154844A - Light-source redundancy system of light repeater - Google Patents

Light-source redundancy system of light repeater

Info

Publication number
JPS55154844A
JPS55154844A JP6264479A JP6264479A JPS55154844A JP S55154844 A JPS55154844 A JP S55154844A JP 6264479 A JP6264479 A JP 6264479A JP 6264479 A JP6264479 A JP 6264479A JP S55154844 A JPS55154844 A JP S55154844A
Authority
JP
Japan
Prior art keywords
light
light source
repeater
transmission line
fault
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.)
Granted
Application number
JP6264479A
Other languages
Japanese (ja)
Other versions
JPS6057254B2 (en
Inventor
Norio Seki
Yotaro Hachitsuka
Haruo Sakaguchi
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP54062644A priority Critical patent/JPS6057254B2/en
Publication of JPS55154844A publication Critical patent/JPS55154844A/en
Publication of JPS6057254B2 publication Critical patent/JPS6057254B2/en
Expired 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
    • H04B10/03—Arrangements for fault recovery
    • H04B10/032—Arrangements for fault recovery using working and protection systems

Abstract

PURPOSE:To make it possible to realize a light repeater of high reliability even when the reliability of each light source would be low, by changing light sources in sequence when a light source in operation runs into trouble. CONSTITUTION:For example, light source S1 is put into operation with only current switch 21 closed and light energy from light source S1 is transmitted to optical fiber transmission line f0 via light switch circuit 3. In case that light source S1 gets out of order, the post-stage repeater detects the fault happening to send out fault-position information characteristic of each repeater to a supervisory station via the optical fiber transmission line. In the supervisory station, the light repeater generating a fault-position information signal is sepcified and it is judged that the light source of the pre-stage light repeater is in trouble. The supervisory station transmits a light switching control signal up to the faulty repeater and puts switching control circuit 4 into opeation to open switch 21 while closing switch 22, and consequently while light source S2 is put into operation, light energy from only light source S2 is sent out to transmission line f0 via circuit 3.
JP54062644A 1979-05-23 1979-05-23 Light source redundancy method for optical repeaters Expired JPS6057254B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54062644A JPS6057254B2 (en) 1979-05-23 1979-05-23 Light source redundancy method for optical repeaters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54062644A JPS6057254B2 (en) 1979-05-23 1979-05-23 Light source redundancy method for optical repeaters

Publications (2)

Publication Number Publication Date
JPS55154844A true JPS55154844A (en) 1980-12-02
JPS6057254B2 JPS6057254B2 (en) 1985-12-13

Family

ID=13206237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54062644A Expired JPS6057254B2 (en) 1979-05-23 1979-05-23 Light source redundancy method for optical repeaters

Country Status (1)

Country Link
JP (1) JPS6057254B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528586A1 (en) * 1982-06-11 1983-12-16 Cit Alcatel OPTICAL SWITCHING DEVICE
US7127168B2 (en) 2001-06-13 2006-10-24 Nippon Telegraph And Telephone Corporation Multi-wavelength optical modulation circuit and wavelength-division multiplexed optical signal transmitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528586A1 (en) * 1982-06-11 1983-12-16 Cit Alcatel OPTICAL SWITCHING DEVICE
US7127168B2 (en) 2001-06-13 2006-10-24 Nippon Telegraph And Telephone Corporation Multi-wavelength optical modulation circuit and wavelength-division multiplexed optical signal transmitter

Also Published As

Publication number Publication date
JPS6057254B2 (en) 1985-12-13

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