JPS5614739A - Light pulse echo detector - Google Patents

Light pulse echo detector

Info

Publication number
JPS5614739A
JPS5614739A JP8934379A JP8934379A JPS5614739A JP S5614739 A JPS5614739 A JP S5614739A JP 8934379 A JP8934379 A JP 8934379A JP 8934379 A JP8934379 A JP 8934379A JP S5614739 A JPS5614739 A JP S5614739A
Authority
JP
Japan
Prior art keywords
light
branch unit
port
light pulse
light branch
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
JP8934379A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6252251B2 (enrdf_load_stackoverflow
Inventor
Hideharu Tokiwa
Hiroharu Wakabayashi
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 JP8934379A priority Critical patent/JPS5614739A/ja
Publication of JPS5614739A publication Critical patent/JPS5614739A/ja
Publication of JPS6252251B2 publication Critical patent/JPS6252251B2/ja
Granted 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]

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Communication System (AREA)
JP8934379A 1979-07-16 1979-07-16 Light pulse echo detector Granted JPS5614739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8934379A JPS5614739A (en) 1979-07-16 1979-07-16 Light pulse echo detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8934379A JPS5614739A (en) 1979-07-16 1979-07-16 Light pulse echo detector

Publications (2)

Publication Number Publication Date
JPS5614739A true JPS5614739A (en) 1981-02-13
JPS6252251B2 JPS6252251B2 (enrdf_load_stackoverflow) 1987-11-04

Family

ID=13968047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8934379A Granted JPS5614739A (en) 1979-07-16 1979-07-16 Light pulse echo detector

Country Status (1)

Country Link
JP (1) JPS5614739A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773633A (en) * 1980-10-27 1982-05-08 Nippon Telegr & Teleph Corp <Ntt> Light pulse testing device
JPS58113831A (ja) * 1981-12-28 1983-07-06 Fujitsu Ltd 損失分布測定装置
US4708471A (en) * 1985-02-27 1987-11-24 U.S. Philips Corporation Optical time-domain reflectometer using heterodyne reception

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS512379A (ja) * 1974-06-24 1976-01-09 Mitsubishi Electric Corp Fujunbutsukakusanhoho
JPS5149737A (ja) * 1974-10-25 1976-04-30 Nippon Electric Co Hikarifuaibadansenkensasochi
JPS5773633A (en) * 1980-10-27 1982-05-08 Nippon Telegr & Teleph Corp <Ntt> Light pulse testing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS512379A (ja) * 1974-06-24 1976-01-09 Mitsubishi Electric Corp Fujunbutsukakusanhoho
JPS5149737A (ja) * 1974-10-25 1976-04-30 Nippon Electric Co Hikarifuaibadansenkensasochi
JPS5773633A (en) * 1980-10-27 1982-05-08 Nippon Telegr & Teleph Corp <Ntt> Light pulse testing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773633A (en) * 1980-10-27 1982-05-08 Nippon Telegr & Teleph Corp <Ntt> Light pulse testing device
JPS58113831A (ja) * 1981-12-28 1983-07-06 Fujitsu Ltd 損失分布測定装置
US4708471A (en) * 1985-02-27 1987-11-24 U.S. Philips Corporation Optical time-domain reflectometer using heterodyne reception

Also Published As

Publication number Publication date
JPS6252251B2 (enrdf_load_stackoverflow) 1987-11-04

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