JPS5526706A - Line concentration-distribution system using photo-branching filter - Google Patents

Line concentration-distribution system using photo-branching filter

Info

Publication number
JPS5526706A
JPS5526706A JP9864478A JP9864478A JPS5526706A JP S5526706 A JPS5526706 A JP S5526706A JP 9864478 A JP9864478 A JP 9864478A JP 9864478 A JP9864478 A JP 9864478A JP S5526706 A JPS5526706 A JP S5526706A
Authority
JP
Japan
Prior art keywords
optical fiber
signals
photo
way
exchange station
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
JP9864478A
Other languages
Japanese (ja)
Inventor
Hideki Ishio
Kiyoshi Nosu
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9864478A priority Critical patent/JPS5526706A/en
Publication of JPS5526706A publication Critical patent/JPS5526706A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To attain duplex communication only by providing one optical fiber line to each subscriber by applying wavelength-division multiplex transmission technology. CONSTITUTION:Signals of wavelengths lambdaD1-lambdaD3 from exchange station 1 are tranmitted through optical fiber 30 to line concentrator 7, where they are separated by an interference-film filter, etc., and separated signals are separately transmitted through optical fiber lines 31-33 corresponding to subscribers 21-23 and then inputted to photo receiver 5 by way of corresponding photo separating couplers 6. Signals of wavelengths lambdaU1-lambdaU3 from subscriber sides, on the other hand, reach line concentrator 7 via optical fiber lines 31-33 by way of the route opposite to signals from exchange station 1 and all signals are transmitted from line concentrator 7 to exchange station 1 via one optical fiber 30. In this way, only providing one optical fiber to each subsciber makes duplex communication possible and required optical fiber lines can be reduced most in number.
JP9864478A 1978-08-15 1978-08-15 Line concentration-distribution system using photo-branching filter Pending JPS5526706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9864478A JPS5526706A (en) 1978-08-15 1978-08-15 Line concentration-distribution system using photo-branching filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9864478A JPS5526706A (en) 1978-08-15 1978-08-15 Line concentration-distribution system using photo-branching filter

Publications (1)

Publication Number Publication Date
JPS5526706A true JPS5526706A (en) 1980-02-26

Family

ID=14225202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9864478A Pending JPS5526706A (en) 1978-08-15 1978-08-15 Line concentration-distribution system using photo-branching filter

Country Status (1)

Country Link
JP (1) JPS5526706A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555810A (en) * 1981-09-04 1985-11-26 U.S. Philips Corporation Distribution system for a local area network
JPS61264893A (en) * 1985-05-20 1986-11-22 Nippon Telegr & Teleph Corp <Ntt> Light concentration system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555810A (en) * 1981-09-04 1985-11-26 U.S. Philips Corporation Distribution system for a local area network
JPS61264893A (en) * 1985-05-20 1986-11-22 Nippon Telegr & Teleph Corp <Ntt> Light concentration system

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