CA2221167A1 - Optical waveguide grating - Google Patents

Optical waveguide grating

Info

Publication number
CA2221167A1
CA2221167A1 CA002221167A CA2221167A CA2221167A1 CA 2221167 A1 CA2221167 A1 CA 2221167A1 CA 002221167 A CA002221167 A CA 002221167A CA 2221167 A CA2221167 A CA 2221167A CA 2221167 A1 CA2221167 A1 CA 2221167A1
Authority
CA
Canada
Prior art keywords
gratings
grating
optical waveguide
fabricate
phase mask
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
CA002221167A
Other languages
French (fr)
Other versions
CA2221167C (en
Inventor
Martin Cole
Wei-Hung Loh
Richard Ian Laming
Michael Nickolaos Zervas
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.)
University of Southampton
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
Priority claimed from GBGB9509874.5A external-priority patent/GB9509874D0/en
Application filed by Individual filed Critical Individual
Publication of CA2221167A1 publication Critical patent/CA2221167A1/en
Application granted granted Critical
Publication of CA2221167C publication Critical patent/CA2221167C/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
    • G02B6/02152—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating involving moving the fibre or a manufacturing element, stretching of the 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
    • G02B6/02123—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
    • G02B6/02138—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating using beam interference based on illuminating a phase mask
    • 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

Landscapes

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

Abstract

A method of forming optical waveguide gratings, such as in-fibre gratings, is described. The gratings are formed optically, with a phase mask being scanned by a writing laser beam to generate the grating pattern. The waveguide and phase mask are moved with respect to one another during the writing process, to vary the grating properties along the length of the grating. Relative move-ment in a single direction provides a change of grating pitch, and so can be used to fabricate chirped or multi--wavelength gratings. Bi-directional dither alters the strength of the grating, and so can be used to fabricate apodised gratings.
CA002221167A 1995-05-16 1996-05-14 Optical waveguide grating Expired - Lifetime CA2221167C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9509874.5A GB9509874D0 (en) 1995-05-16 1995-05-16 Optical waveguide grating
GB9509874.5 1995-05-16
PCT/GB1996/001154 WO1996036895A1 (en) 1995-05-16 1996-05-14 Optical waveguide grating

Publications (2)

Publication Number Publication Date
CA2221167A1 true CA2221167A1 (en) 1996-11-21
CA2221167C CA2221167C (en) 2006-10-03

Family

ID=37101773

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002221167A Expired - Lifetime CA2221167C (en) 1995-05-16 1996-05-14 Optical waveguide grating

Country Status (1)

Country Link
CA (1) CA2221167C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111856644A (en) * 2020-07-28 2020-10-30 中国人民解放军国防科技大学 Apodization long period optical fiber grating inscribing device, inscribing method and laser system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111856644A (en) * 2020-07-28 2020-10-30 中国人民解放军国防科技大学 Apodization long period optical fiber grating inscribing device, inscribing method and laser system
CN111856644B (en) * 2020-07-28 2023-10-03 中国人民解放军国防科技大学 Apodized long-period fiber bragg grating inscription device, inscription method and laser system

Also Published As

Publication number Publication date
CA2221167C (en) 2006-10-03

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20160516