CA2179042A1 - Method and Apparatus for Forming Aperiodic Gratings in Optical Fibers - Google Patents

Method and Apparatus for Forming Aperiodic Gratings in Optical Fibers

Info

Publication number
CA2179042A1
CA2179042A1 CA2179042A CA2179042A CA2179042A1 CA 2179042 A1 CA2179042 A1 CA 2179042A1 CA 2179042 A CA2179042 A CA 2179042A CA 2179042 A CA2179042 A CA 2179042A CA 2179042 A1 CA2179042 A1 CA 2179042A1
Authority
CA
Canada
Prior art keywords
wavelength
predetermined
fiber
variation
index variation
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
CA2179042A
Other languages
French (fr)
Other versions
CA2179042C (en
Inventor
William H. Glenn
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.)
RTX Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2179042A1 publication Critical patent/CA2179042A1/en
Application granted granted Critical
Publication of CA2179042C publication Critical patent/CA2179042C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
    • G02B6/02133—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating using beam interference
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00—Optical: systems and elements
    • Y10S359/90—Methods

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

A method and apparatus for simultaneously exposing an optical fiber (32), made of a material which has a refractive index that can b e permanently changed by exposure to light of a predetermined intensity at a predetermined wavelength, to two writing light beams (268 , 272) which intersect and interfere in a predetermined region (30) of the fiber (32) so as to create an interference pattern along a longi tudinal axis of the fiber (32), for a time long enough to form a permanent refractive index variation in the waveguide. Each of said two writing beams have a predetermined number of wavelengths, each wavelength being sufficiently different from each other so as to cause said refract ive index variation to be an aperiodic variation. Also, each wavelength represents a Fourier component of the desired aperiodic refracti ve index variation.
CA002179042A 1993-12-20 1994-09-30 Method and apparatus for forming aperiodic gratings in optical fibers Expired - Lifetime CA2179042C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/169,796 US5388173A (en) 1993-12-20 1993-12-20 Method and apparatus for forming aperiodic gratings in optical fibers
US08/169,796 1993-12-20

Publications (2)

Publication Number Publication Date
CA2179042A1 true CA2179042A1 (en) 1995-06-29
CA2179042C CA2179042C (en) 1998-01-06

Family

ID=22617217

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002179042A Expired - Lifetime CA2179042C (en) 1993-12-20 1994-09-30 Method and apparatus for forming aperiodic gratings in optical fibers

Country Status (7)

Country Link
US (1) US5388173A (en)
EP (1) EP0736201B1 (en)
JP (1) JP3059761B2 (en)
CA (1) CA2179042C (en)
DE (1) DE69411590T2 (en)
ES (1) ES2119372T3 (en)
WO (1) WO1995017705A2 (en)

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Also Published As

Publication number Publication date
WO1995017705A2 (en) 1995-06-29
WO1995017705A3 (en) 1995-09-08
JPH09506981A (en) 1997-07-08
EP0736201A1 (en) 1996-10-09
DE69411590T2 (en) 1998-11-12
ES2119372T3 (en) 1998-10-01
DE69411590D1 (en) 1998-08-13
US5388173A (en) 1995-02-07
CA2179042C (en) 1998-01-06
JP3059761B2 (en) 2000-07-04
EP0736201B1 (en) 1998-07-08

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