CA2120624A1 - An Optical Grating and a Method of Fabricating an Optical Grating - Google Patents

An Optical Grating and a Method of Fabricating an Optical Grating

Info

Publication number
CA2120624A1
CA2120624A1 CA 2120624 CA2120624A CA2120624A1 CA 2120624 A1 CA2120624 A1 CA 2120624A1 CA 2120624 CA2120624 CA 2120624 CA 2120624 A CA2120624 A CA 2120624A CA 2120624 A1 CA2120624 A1 CA 2120624A1
Authority
CA
Canada
Prior art keywords
grating
optical grating
sequence
fabricating
lines
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
CA 2120624
Other languages
French (fr)
Other versions
CA2120624C (en
Inventor
David Charles Wood
Stephen Anthony Cassidy
Mark Robert Wilkinson
Paul Francis Mckee
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.)
British Telecommunications PLC
Original Assignee
David Charles Wood
Stephen Anthony Cassidy
Mark Robert Wilkinson
Paul Francis Mckee
British Telecommunications Public Limited Company
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 David Charles Wood, Stephen Anthony Cassidy, Mark Robert Wilkinson, Paul Francis Mckee, British Telecommunications Public Limited Company filed Critical David Charles Wood
Publication of CA2120624A1 publication Critical patent/CA2120624A1/en
Application granted granted Critical
Publication of CA2120624C publication Critical patent/CA2120624C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G02B6/0208—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
    • 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
    • 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
    • G02B6/122—Basic optical elements, e.g. light-guiding paths
    • G02B6/124—Geodesic lenses or integrated 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
    • G02B6/02—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
    • G02B2006/02166—Methods of designing the gratings, i.e. calculating the structure, e.g. algorithms, numerical methods
    • 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
    • G02B6/02066—Gratings having a surface relief structure, e.g. repetitive variation in diameter of core or cladding

Abstract

An optical grating includes a sequence of grating lines, the sequence being such that each grating line is centred on a position which is an integer multiple of a line spacing distance from a datum position on the grating, the sequence of grating lines is non-periodic and the sequence of grating lines is formed from N concatenated subsequences. Each subsequence comprising a series of one or more instances of a respective grating line pattern. Such an optical grating has a structure that is more amenable to calculation of the grating lines necessary to achieve a desired characteristic. A method of calculating and fabricating such a grating is also disclosed.
CA002120624A 1992-01-10 1993-01-11 An optical grating and a method of fabricating an optical grating Expired - Fee Related CA2120624C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9200616.2 1992-01-10
GB929200616A GB9200616D0 (en) 1992-01-10 1992-01-10 An optical grating and a method of fabricating an optical grating
PCT/GB1993/000043 WO1993014424A1 (en) 1992-01-10 1993-01-11 An optical grating and a method of fabricating an optical grating

Publications (2)

Publication Number Publication Date
CA2120624A1 true CA2120624A1 (en) 1993-07-22
CA2120624C CA2120624C (en) 1999-10-12

Family

ID=10708492

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002120624A Expired - Fee Related CA2120624C (en) 1992-01-10 1993-01-11 An optical grating and a method of fabricating an optical grating

Country Status (8)

Country Link
US (2) US5666224A (en)
EP (1) EP0620924B1 (en)
JP (1) JPH07502837A (en)
AU (1) AU659528B2 (en)
CA (1) CA2120624C (en)
DE (1) DE69324236T2 (en)
GB (1) GB9200616D0 (en)
WO (1) WO1993014424A1 (en)

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US6819460B1 (en) * 1995-03-13 2004-11-16 University Of Washington Apparatus and methods for routing of optical beams via time-domain spatial-spectral filtering
GB9722421D0 (en) * 1997-10-24 1997-12-24 Univ Southampton Optical grating
GB9722549D0 (en) * 1997-10-24 1997-12-24 Univ Southampton Fabricating optical waveguide gratings and/or characterising optical waveguides
US6101301A (en) * 1998-04-17 2000-08-08 Lucent Technologies Inc. Temperature-compensated optical fiber gratings with fine wavelength tuning
GB2385941B (en) * 1999-03-05 2003-10-22 Nanovis Llc Non-linear optical loop miror with aperiodic grating
GB9905196D0 (en) * 1999-03-05 1999-04-28 Fujitsu Telecommunications Eur Aperiodic gratings
US6993222B2 (en) * 1999-03-05 2006-01-31 Rj Mears, Llc Optical filter device with aperiodically arranged grating elements
KR100318903B1 (en) * 2000-01-14 2001-12-29 윤종용 Long period optical fiber grating
US6603904B1 (en) 2001-03-28 2003-08-05 Jaffalight Holdings Llc All optical narrow pulse generator and switch for dense time division multiplexing and code division multiplexing
US6608690B2 (en) * 2001-12-04 2003-08-19 Timbre Technologies, Inc. Optical profilometry of additional-material deviations in a periodic grating
US8043287B2 (en) * 2002-03-05 2011-10-25 Kimberly-Clark Inc. Method of treating biological tissue
AUPS104402A0 (en) * 2002-03-12 2002-04-11 Redfern Optical Components Pty Ltd Multi-layered structure characterisation
US7101226B1 (en) * 2005-06-08 2006-09-05 Wave Intellectual Property, Inc. Compact contour electrical converter package
US9261632B2 (en) * 2010-01-05 2016-02-16 Hewlett Packard Enterprise Development Lp Light emitting diode device
US8452141B2 (en) * 2010-07-30 2013-05-28 Hewlett-Packard Development Company, L.P. Optical waveguide coupling device and associated methods
US8369664B2 (en) * 2010-07-30 2013-02-05 Hewlett-Packard Development Company, L.P. Optical apparatus for forming a tunable cavity
FI128882B (en) * 2017-12-22 2021-02-15 Dispelix Oy Optical waveguide and diffractive waveguide display
CN115185036B (en) * 2022-07-18 2024-03-01 江苏师范大学 Hollow fiber grating based on gas paramagnetic effect and implementation method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814498A (en) * 1972-05-04 1974-06-04 Bell Telephone Labor Inc Integrated optical circuit devices employing optical gratings
US4155056A (en) * 1977-08-25 1979-05-15 Bell Telephone Laboratories, Incorporated Cascaded grating resonator filters with external input-output couplers
US4687286A (en) * 1985-05-03 1987-08-18 Gte Laboratories Incorporated Methods of and apparatus for optical spatial scanning
US4740987A (en) * 1986-06-30 1988-04-26 American Telephone And Telegraph Company, At&T Bell Laboratories Distributed-feedback laser having enhanced mode selectivity
JP2825508B2 (en) * 1987-10-09 1998-11-18 株式会社日立製作所 Semiconductor laser device and optical communication system
US4885752A (en) 1988-03-28 1989-12-05 Hughes Aircraft Company Crystal modulated laser with improved resonator
DE3915625A1 (en) * 1989-05-12 1990-11-15 Standard Elektrik Lorenz Ag SEMICONDUCTOR LASER
EP0409487B1 (en) * 1989-07-15 1999-12-29 Fujitsu Limited Tunable laser diode having a distributed feedback structure
JPH03251826A (en) * 1990-01-25 1991-11-11 Oki Electric Ind Co Ltd Second harmonic generating element
US5048909A (en) * 1990-07-27 1991-09-17 At&T Bell Laboratories Adiabatic reflection apparatus
US5113286A (en) * 1990-09-27 1992-05-12 At&T Bell Laboratories Diffraction grating apparatus and method of forming a surface relief pattern in diffraction grating apparatus
US5091916A (en) * 1990-09-28 1992-02-25 At&T Bell Laboratories Distributed reflector laser having improved side mode suppression
US5202775A (en) * 1991-11-04 1993-04-13 University Of North Carolina Radically symmetric hologram and method of fabricating the same

Also Published As

Publication number Publication date
DE69324236T2 (en) 1999-07-29
CA2120624C (en) 1999-10-12
AU3263393A (en) 1993-08-03
JPH07502837A (en) 1995-03-23
AU659528B2 (en) 1995-05-18
GB9200616D0 (en) 1992-03-11
EP0620924B1 (en) 1999-03-31
DE69324236D1 (en) 1999-05-06
US5666224A (en) 1997-09-09
WO1993014424A1 (en) 1993-07-22
EP0620924A1 (en) 1994-10-26
US6172811B1 (en) 2001-01-09

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