JPS5740207A - Optical fiber dispersion/delay equalizer and its production - Google Patents

Optical fiber dispersion/delay equalizer and its production

Info

Publication number
JPS5740207A
JPS5740207A JP55115840A JP11584080A JPS5740207A JP S5740207 A JPS5740207 A JP S5740207A JP 55115840 A JP55115840 A JP 55115840A JP 11584080 A JP11584080 A JP 11584080A JP S5740207 A JPS5740207 A JP S5740207A
Authority
JP
Japan
Prior art keywords
waveguide line
wavelength
optical fiber
base plate
film thickness
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
JP55115840A
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 JP55115840A priority Critical patent/JPS5740207A/en
Publication of JPS5740207A publication Critical patent/JPS5740207A/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
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/12007—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
    • 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
    • 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
    • G02B6/29304—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 operating by diffraction, e.g. grating
    • G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29317—Light guides of the optical fibre type
    • G02B6/29319—With a cascade of diffractive elements or of diffraction operations
    • G02B6/2932—With a cascade of diffractive elements or of diffraction operations comprising a directional router, e.g. directional coupler, circulator
    • 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

Abstract

PURPOSE:To obtain required highly accurate reflection characteristics at the removal of wavelength dispersion in optical fiber transmission by specifying the film thickness of a waveguide line formed on gratings attached on a base plate and controlling the reflection characteristics of the waveguide line while monitoring them. CONSTITUTION:Grating 11-16 to equalize the group delay time difference generated when the light with a subscribed wavelength width from a light source is transmitted through an optical fiber with length (l) and wavelength dispersion (s) are formed on a light waveguide line 1 attached on a base plate 1. If the wavelength to divide the wavelength area of the light source into (N-1) is lambdai (i=1-N) from the long wavelength side, the grating Gi with frequency LAMBDA attached on the position of Zi from the incident surface of the waveguide line is found from the shown and the film thickness of waveguide lines and positions on the gratings 11-16 can be decided. The film thickness of waveguide line is controlled and formed while monitoring the reflection characteristics of the light passing through the waveguide line in the process of thinfilm prepared on the base plate 2.
JP55115840A 1980-08-25 1980-08-25 Optical fiber dispersion/delay equalizer and its production Pending JPS5740207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55115840A JPS5740207A (en) 1980-08-25 1980-08-25 Optical fiber dispersion/delay equalizer and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55115840A JPS5740207A (en) 1980-08-25 1980-08-25 Optical fiber dispersion/delay equalizer and its production

Publications (1)

Publication Number Publication Date
JPS5740207A true JPS5740207A (en) 1982-03-05

Family

ID=14672417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55115840A Pending JPS5740207A (en) 1980-08-25 1980-08-25 Optical fiber dispersion/delay equalizer and its production

Country Status (1)

Country Link
JP (1) JPS5740207A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60175025A (en) * 1984-02-21 1985-09-09 Nippon Telegr & Teleph Corp <Ntt> Optical demultiplexer
JPS6138908A (en) * 1984-07-11 1986-02-25 エステイーシー・ピーエルシー Optical fiber transmission system
US5570439A (en) * 1993-01-19 1996-10-29 Hitachi, Ltd. Optical waveguide device and optical transmission system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60175025A (en) * 1984-02-21 1985-09-09 Nippon Telegr & Teleph Corp <Ntt> Optical demultiplexer
JPS6138908A (en) * 1984-07-11 1986-02-25 エステイーシー・ピーエルシー Optical fiber transmission system
JPH057683B2 (en) * 1984-07-11 1993-01-29 Stc Plc
US5570439A (en) * 1993-01-19 1996-10-29 Hitachi, Ltd. Optical waveguide device and optical transmission system

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