CA2057232A1 - Method of creating an index grating in an optical fiber and a mode converter using the index grating - Google Patents

Method of creating an index grating in an optical fiber and a mode converter using the index grating

Info

Publication number
CA2057232A1
CA2057232A1 CA002057232A CA2057232A CA2057232A1 CA 2057232 A1 CA2057232 A1 CA 2057232A1 CA 002057232 A CA002057232 A CA 002057232A CA 2057232 A CA2057232 A CA 2057232A CA 2057232 A1 CA2057232 A1 CA 2057232A1
Authority
CA
Canada
Prior art keywords
index grating
optical fiber
creating
mode converter
fiber
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
CA002057232A
Other languages
French (fr)
Other versions
CA2057232C (en
Inventor
Kenneth O. Hill
Bernard Y. Malo
Francois Bilodeau
Derwyn C. Johnson
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.)
Individual
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 CA2057232A1 publication Critical patent/CA2057232A1/en
Application granted granted Critical
Publication of CA2057232C publication Critical patent/CA2057232C/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
    • G02B6/02147—Point by point fabrication, i.e. grating elements induced one step at a time along the fibre, e.g. by scanning a laser beam, arc discharge scanning
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1847—Manufacturing methods
    • G02B5/1857—Manufacturing methods using exposure or etching means, e.g. holography, photolithography, exposure to electron or ion beams
    • 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
    • G02B6/14—Mode converters
    • 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
    • G02B6/02047—Dual mode fibre
    • 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
    • G02B6/0208—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
    • G02B6/02085—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response characterised by the grating profile, e.g. chirped, apodised, tilted, helical
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

This invention relates to a method of creating an index grating in an optical fiber comprising disposing a slit mask containing one or more slits over a side of an optical fiber, illuminating the fiber through the slit mask by substantially monochromatic ultraviolet light for a short interval, whereby an index grating line is created and stored in the core of the fiber.
CA002057232A 1991-02-19 1991-12-06 Method of creating an index grating in an optical fiber and a mode converter using the index grating Expired - Lifetime CA2057232C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/656,462 US5104209A (en) 1991-02-19 1991-02-19 Method of creating an index grating in an optical fiber and a mode converter using the index grating
US656,462 1991-02-19

Publications (2)

Publication Number Publication Date
CA2057232A1 true CA2057232A1 (en) 1992-08-20
CA2057232C CA2057232C (en) 2003-06-03

Family

ID=24633136

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002057232A Expired - Lifetime CA2057232C (en) 1991-02-19 1991-12-06 Method of creating an index grating in an optical fiber and a mode converter using the index grating

Country Status (2)

Country Link
US (3) US5104209A (en)
CA (1) CA2057232C (en)

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Also Published As

Publication number Publication date
USRE39865E1 (en) 2007-10-02
CA2057232C (en) 2003-06-03
US5216739A (en) 1993-06-01
US5104209A (en) 1992-04-14

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