JPS5789702A - Optical-fiber wavelength dispersion equalizer - Google Patents

Optical-fiber wavelength dispersion equalizer

Info

Publication number
JPS5789702A
JPS5789702A JP16557880A JP16557880A JPS5789702A JP S5789702 A JPS5789702 A JP S5789702A JP 16557880 A JP16557880 A JP 16557880A JP 16557880 A JP16557880 A JP 16557880A JP S5789702 A JPS5789702 A JP S5789702A
Authority
JP
Japan
Prior art keywords
couples
light beams
coupling part
waveguide
lambda1
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
JP16557880A
Other languages
Japanese (ja)
Inventor
Nobuyuki Imoto
Masahiro Ikeda
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 JP16557880A priority Critical patent/JPS5789702A/en
Publication of JPS5789702A publication Critical patent/JPS5789702A/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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/29392—Controlling dispersion
    • G02B6/29394—Compensating wavelength dispersion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To reduce a difference in time lag due to wavelength generated when light having a latitude in wavelength propagates in an optical fiber, by combining looped delay waveguides which couple with only specific wavelengths. CONSTITUTION:A looped delay waveguide 2 couples with a waveguide 1 through a coupling part 3, waveguides 4 and 5 couples with the waveguide 2, and waveguides 8 and 9 couples with the waveguides 4 and 5 similarly. For example, when light beams having wavelengths lambda1-lambda8 are made incident to the waveguide 1, the coupling part 3 couples with only the light beams having the wavelengths lambda1, lambda3, lambda5, and lambda7, and light beams having the wavelengths lambda2, lambda4, lambda6, and lambda8 are transmitted as they are. A coupling part couples with the light beams having the lambda1 and lambda5, and a coupling part 7 couples with the light beams having lambda3 and lambda7; and a coupling part 11 couples with the light beam having the lambda1, and a coupling part 12 couples with the light beam having the lambda3 respectively. Conseuequently, the light beams having the wavelengths lambda1, lambda3, lambda5, and lambda7 are delayed optionally, and the remaining light beams having the lambda2, lambda4, lambda6, and lambda8 are delayed behind a delay waveguide 13.
JP16557880A 1980-11-25 1980-11-25 Optical-fiber wavelength dispersion equalizer Pending JPS5789702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16557880A JPS5789702A (en) 1980-11-25 1980-11-25 Optical-fiber wavelength dispersion equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16557880A JPS5789702A (en) 1980-11-25 1980-11-25 Optical-fiber wavelength dispersion equalizer

Publications (1)

Publication Number Publication Date
JPS5789702A true JPS5789702A (en) 1982-06-04

Family

ID=15815012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16557880A Pending JPS5789702A (en) 1980-11-25 1980-11-25 Optical-fiber wavelength dispersion equalizer

Country Status (1)

Country Link
JP (1) JPS5789702A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676584A (en) * 1983-06-22 1987-06-30 Metatech Corporation Fiber optic light coupling assemblies
EP0257889A2 (en) * 1986-08-08 1988-03-02 Corning Glass Works Data rate limiter for optical transmission system
US6847759B2 (en) 2002-04-24 2005-01-25 Fujitsu Limited Wavelength dispersion compensating filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676584A (en) * 1983-06-22 1987-06-30 Metatech Corporation Fiber optic light coupling assemblies
EP0257889A2 (en) * 1986-08-08 1988-03-02 Corning Glass Works Data rate limiter for optical transmission system
US6847759B2 (en) 2002-04-24 2005-01-25 Fujitsu Limited Wavelength dispersion compensating filter

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