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JPS57174949A - Optical data branch and inserting device - Google Patents

Optical data branch and inserting device

Info

Publication number
JPS57174949A
JPS57174949A JP56059943A JP5994381A JPS57174949A JP S57174949 A JPS57174949 A JP S57174949A JP 56059943 A JP56059943 A JP 56059943A JP 5994381 A JP5994381 A JP 5994381A JP S57174949 A JPS57174949 A JP S57174949A
Authority
JP
Japan
Prior art keywords
data signal
optical data
electric
photocoupler
photo
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
JP56059943A
Other languages
Japanese (ja)
Inventor
Kazumasa Tsukada
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56059943A priority Critical patent/JPS57174949A/en
Publication of JPS57174949A publication Critical patent/JPS57174949A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2861—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using fibre optic delay lines and optical elements associated with them, e.g. for use in signal processing, e.g. filtering

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To prevent phase shift between an input optical data signal and an inserted optical data signal, by inserting an optical fiber as a delay line between a branching photocoupler and an insertion photocoupler. CONSTITUTION:An input data signal A is branched into two at a branching photocoupler 1; one is converted into an electric signal A'' via a photo-electric converter 2 and another is inputted to an insertion photocoupler 3 via an optical delay line 6. The electric signal A'' is synthesized with an input data signal B with an OR gate 4, the output passes through an electric delay line 7 and converted into an optical data signal D at an electric-photo converter 5. The optical data sigal D is synthesized at an optical data signal A' at the coupler 3 to be an output optical data signal C. In setting a delay time t2 of the line 6 to be equal to a delay time t1 of electric-photo and photo-electric conversion, no time shift is generated in a synthesized output optical data signal C in the coupler 3 is generated.
JP56059943A 1981-04-20 1981-04-20 Optical data branch and inserting device Pending JPS57174949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56059943A JPS57174949A (en) 1981-04-20 1981-04-20 Optical data branch and inserting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56059943A JPS57174949A (en) 1981-04-20 1981-04-20 Optical data branch and inserting device

Publications (1)

Publication Number Publication Date
JPS57174949A true JPS57174949A (en) 1982-10-27

Family

ID=13127726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56059943A Pending JPS57174949A (en) 1981-04-20 1981-04-20 Optical data branch and inserting device

Country Status (1)

Country Link
JP (1) JPS57174949A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60160231A (en) * 1984-01-31 1985-08-21 Toshiba Corp Loop form optical dataway system
US5184244A (en) * 1988-11-25 1993-02-02 Sumitomo Electric Industries, Ltd. Optical communication system and communication method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60160231A (en) * 1984-01-31 1985-08-21 Toshiba Corp Loop form optical dataway system
US5184244A (en) * 1988-11-25 1993-02-02 Sumitomo Electric Industries, Ltd. Optical communication system and communication method

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