JPS5611432A - Light delay device - Google Patents
Light delay deviceInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-07-09 JP JP8677279A patent/JPS5611432A/en active Pending
Patent Citations (1)
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)
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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BLACKBURN et al. | A versatile fiber-optics signal link for EMP testing and general laboratory applications[Technical Memorandum, Jul. 1977- Jul. 1978] |