JPS5789704A - Equalization system for optical-fiber wavelength dispersion - Google Patents

Equalization system for optical-fiber wavelength dispersion

Info

Publication number
JPS5789704A
JPS5789704A JP55165580A JP16558080A JPS5789704A JP S5789704 A JPS5789704 A JP S5789704A JP 55165580 A JP55165580 A JP 55165580A JP 16558080 A JP16558080 A JP 16558080A JP S5789704 A JPS5789704 A JP S5789704A
Authority
JP
Japan
Prior art keywords
wavelength
optical fiber
lambda3
wavelengths
optical
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.)
Granted
Application number
JP55165580A
Other languages
Japanese (ja)
Other versions
JPS6242245B2 (en
Inventor
Nobuyuki Imoto
Sunao Uesugi
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 JP55165580A priority Critical patent/JPS5789704A/en
Publication of JPS5789704A publication Critical patent/JPS5789704A/en
Publication of JPS6242245B2 publication Critical patent/JPS6242245B2/ja
Granted 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
    • H04B10/2519—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using Bragg gratings

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 inverting a spectrum at a specific position of all transmission lines. CONSTITUTION:When the lengths of optical fibers 11 and 12 having wavelength dispersions S1 and S2 are L1 and L2, a spectrum inverter 13 which converts a wavelength in signal light into the wavelength of light generated at a symmetrical position with an energizing wavelength in a Raman medium is provided at a position where L1.S1=L2.S2. Consequently, light beams having wavelengths lambda1-lambda3, when made incident to the optical fiber simultaneously, arrive at the spectrum inverter 13 after propagating the optical fiber 11. The spectrum inverter 13 converts the wavelengths lambda1, lambda2 and lambda3 into wavelengths lambda1', lambda2' and lambda3' to reverse the order of wavelengths, so delay is performed by optical fiber 12 to cancel time differences in wavelength, thereby reducing a delay time.
JP55165580A 1980-11-25 1980-11-25 Equalization system for optical-fiber wavelength dispersion Granted JPS5789704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55165580A JPS5789704A (en) 1980-11-25 1980-11-25 Equalization system for optical-fiber wavelength dispersion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55165580A JPS5789704A (en) 1980-11-25 1980-11-25 Equalization system for optical-fiber wavelength dispersion

Publications (2)

Publication Number Publication Date
JPS5789704A true JPS5789704A (en) 1982-06-04
JPS6242245B2 JPS6242245B2 (en) 1987-09-07

Family

ID=15815050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55165580A Granted JPS5789704A (en) 1980-11-25 1980-11-25 Equalization system for optical-fiber wavelength dispersion

Country Status (1)

Country Link
JP (1) JPS5789704A (en)

Also Published As

Publication number Publication date
JPS6242245B2 (en) 1987-09-07

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