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JPS5611432A - Light delay device - Google Patents

Light delay device

Info

Publication number
JPS5611432A
JPS5611432A JP8677279A JP8677279A JPS5611432A JP S5611432 A JPS5611432 A JP S5611432A JP 8677279 A JP8677279 A JP 8677279A JP 8677279 A JP8677279 A JP 8677279A JP S5611432 A JPS5611432 A JP S5611432A
Authority
JP
Japan
Prior art keywords
branching
noise components
mixing
optical fibers
input
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
JP8677279A
Other languages
Japanese (ja)
Inventor
Tsutomu Asabe
Kenzo Ono
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8677279A priority Critical patent/JPS5611432A/en
Publication of JPS5611432A publication Critical patent/JPS5611432A/en
Pending legal-status Critical Current

Links

Landscapes

  • Light Guides In General And Applications Therefor (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE: To suppress noise components in an optical transmission system and perform signal transmission of high reliability by the constitution consisting in photocoupling the input side and output side of a light delay element to one output terminal and input terminal, respectively, of a photomixing and branching element.
CONSTITUTION: A mixing and branching element 10 performing mixing and branching of light signals has at least two input terminals of optical fibers A, D and two output terminals of optical fibers B, C; the input signal (x) being inputted to the optical fiber A and the output signal (y) being outputted to the optical fiber B. The optical fibers C, D are photocoupled with a delay element 11 and the spreading, etc. of the pulse width of the ouput waveform (y) may be controlled by changing the branching rate of the mixing and branching element 10. Since the pulse width of noise components is usually narrow, taking a delay amount long has the effect of decreasing the peak values of respective impulses of the noise components and averaging them in time, and this enables the communication of high reliability to be realized.
COPYRIGHT: (C)1981,JPO&Japio
JP8677279A 1979-07-09 1979-07-09 Light delay device Pending JPS5611432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8677279A JPS5611432A (en) 1979-07-09 1979-07-09 Light delay device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8677279A JPS5611432A (en) 1979-07-09 1979-07-09 Light delay device

Publications (1)

Publication Number Publication Date
JPS5611432A true JPS5611432A (en) 1981-02-04

Family

ID=13896034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8677279A Pending JPS5611432A (en) 1979-07-09 1979-07-09 Light delay device

Country Status (1)

Country Link
JP (1) JPS5611432A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4479701A (en) * 1981-12-01 1984-10-30 Leland Stanford Junior University Dual coupler fiber optic recirculating memory
US4511207A (en) * 1981-11-19 1985-04-16 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic data distributor
US4558920A (en) * 1981-11-19 1985-12-17 Board Of Trustees Of The Leland Stanford Junior University Tapped optical fiber delay line
US4588255A (en) * 1982-06-21 1986-05-13 The Board Of Trustees Of The Leland Stanford Junior University Optical guided wave signal processor for matrix-vector multiplication and filtering
JPS61200502A (en) * 1985-03-01 1986-09-05 Nec Corp Optical filter
JPS61157156U (en) * 1985-03-20 1986-09-29
JPS6450015A (en) * 1987-08-21 1989-02-27 Fujikura Ltd Staircase-shaped light pulse generating device
US8779317B2 (en) 2010-10-18 2014-07-15 Lsis Co., Ltd. Contact assembly for vacuum interrupter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337375A (en) * 1977-09-07 1978-04-06 Hitachi Ltd Secondary electron detector in scanning type electron microscope

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337375A (en) * 1977-09-07 1978-04-06 Hitachi Ltd Secondary electron detector in scanning type electron microscope

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4511207A (en) * 1981-11-19 1985-04-16 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic data distributor
US4558920A (en) * 1981-11-19 1985-12-17 Board Of Trustees Of The Leland Stanford Junior University Tapped optical fiber delay line
US4479701A (en) * 1981-12-01 1984-10-30 Leland Stanford Junior University Dual coupler fiber optic recirculating memory
US4588255A (en) * 1982-06-21 1986-05-13 The Board Of Trustees Of The Leland Stanford Junior University Optical guided wave signal processor for matrix-vector multiplication and filtering
JPS61200502A (en) * 1985-03-01 1986-09-05 Nec Corp Optical filter
JP2652944B2 (en) * 1985-03-01 1997-09-10 日本電気株式会社 Optical filter
JPS61157156U (en) * 1985-03-20 1986-09-29
JPS6450015A (en) * 1987-08-21 1989-02-27 Fujikura Ltd Staircase-shaped light pulse generating device
US8779317B2 (en) 2010-10-18 2014-07-15 Lsis Co., Ltd. Contact assembly for vacuum interrupter

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