JPS52130651A - Optical fiber apparatus - Google Patents

Optical fiber apparatus

Info

Publication number
JPS52130651A
JPS52130651A JP4807576A JP4807576A JPS52130651A JP S52130651 A JPS52130651 A JP S52130651A JP 4807576 A JP4807576 A JP 4807576A JP 4807576 A JP4807576 A JP 4807576A JP S52130651 A JPS52130651 A JP S52130651A
Authority
JP
Japan
Prior art keywords
optical fiber
fiber apparatus
location
high accuracy
arithmetic unit
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
JP4807576A
Other languages
Japanese (ja)
Other versions
JPS5811565B2 (en
Inventor
Munehiko Nagano
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP51048075A priority Critical patent/JPS5811565B2/en
Publication of JPS52130651A publication Critical patent/JPS52130651A/en
Publication of JPS5811565B2 publication Critical patent/JPS5811565B2/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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]

Abstract

PURPOSE:To automatically indicate with high accuracy the location of cut damaged part of optical fiber by providing phase detecting circuit oscillator and frequency arithmetic unit.
JP51048075A 1976-04-27 1976-04-27 fiber optic equipment Expired JPS5811565B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51048075A JPS5811565B2 (en) 1976-04-27 1976-04-27 fiber optic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51048075A JPS5811565B2 (en) 1976-04-27 1976-04-27 fiber optic equipment

Publications (2)

Publication Number Publication Date
JPS52130651A true JPS52130651A (en) 1977-11-02
JPS5811565B2 JPS5811565B2 (en) 1983-03-03

Family

ID=12793218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51048075A Expired JPS5811565B2 (en) 1976-04-27 1976-04-27 fiber optic equipment

Country Status (1)

Country Link
JP (1) JPS5811565B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557622A (en) * 1978-07-03 1980-01-19 Automob Antipollut & Saf Res Center Diagnosis unit for wiring failure
FR2505045A1 (en) * 1981-04-30 1982-11-05 Lignes Telegraph Telephon Fibre=optic cable fracture location determn. circuit - uses clock to measure propagation time difference for two laser diodes emitting different wavelengths

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6219366U (en) * 1985-07-18 1987-02-05

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557622A (en) * 1978-07-03 1980-01-19 Automob Antipollut & Saf Res Center Diagnosis unit for wiring failure
JPS6148672B2 (en) * 1978-07-03 1986-10-25 Jidosha Kogai Anzen Kiki Gijutsu Kenkyu Kumiai
FR2505045A1 (en) * 1981-04-30 1982-11-05 Lignes Telegraph Telephon Fibre=optic cable fracture location determn. circuit - uses clock to measure propagation time difference for two laser diodes emitting different wavelengths

Also Published As

Publication number Publication date
JPS5811565B2 (en) 1983-03-03

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