GB8720878D0 - Optical waveguide device - Google Patents

Optical waveguide device

Info

Publication number
GB8720878D0
GB8720878D0 GB878720878A GB8720878A GB8720878D0 GB 8720878 D0 GB8720878 D0 GB 8720878D0 GB 878720878 A GB878720878 A GB 878720878A GB 8720878 A GB8720878 A GB 8720878A GB 8720878 D0 GB8720878 D0 GB 8720878D0
Authority
GB
United Kingdom
Prior art keywords
optical waveguide
waveguide device
optical
waveguide
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
GB878720878A
Other versions
GB2209408A (en
GB2209408B (en
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8720878A priority Critical patent/GB2209408B/en
Publication of GB8720878D0 publication Critical patent/GB8720878D0/en
Publication of GB2209408A publication Critical patent/GB2209408A/en
Application granted granted Critical
Publication of GB2209408B publication Critical patent/GB2209408B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • H01S5/1206—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers having a non constant or multiplicity of periods
    • H01S5/1215—Multiplicity of periods
    • H01S5/1218—Multiplicity of periods in superstructured configuration, e.g. more than one period in an alternate sequence
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • H01S5/1225—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers with a varying coupling constant along the optical axis
GB8720878A 1987-09-04 1987-09-04 Optical waveguide device having surface relief diffraction grating Expired - Lifetime GB2209408B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8720878A GB2209408B (en) 1987-09-04 1987-09-04 Optical waveguide device having surface relief diffraction grating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8720878A GB2209408B (en) 1987-09-04 1987-09-04 Optical waveguide device having surface relief diffraction grating

Publications (3)

Publication Number Publication Date
GB8720878D0 true GB8720878D0 (en) 1987-10-14
GB2209408A GB2209408A (en) 1989-05-10
GB2209408B GB2209408B (en) 1991-08-21

Family

ID=10623303

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8720878A Expired - Lifetime GB2209408B (en) 1987-09-04 1987-09-04 Optical waveguide device having surface relief diffraction grating

Country Status (1)

Country Link
GB (1) GB2209408B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8907304D0 (en) * 1989-03-31 1989-05-17 British Telecomm Distributed feedback lasers
DE3915625A1 (en) * 1989-05-12 1990-11-15 Standard Elektrik Lorenz Ag SEMICONDUCTOR LASER
NL9000164A (en) * 1990-01-23 1991-08-16 Imec Inter Uni Micro Electr LASER CONSTRUCTION WITH DISTRIBUTED FEEDBACK AND METHOD OF MANUFACTURE THEREOF.
EP0455067B1 (en) * 1990-05-03 2003-02-26 F. Hoffmann-La Roche Ag Micro-optical sensor
GB9126652D0 (en) * 1991-12-16 1992-02-12 Marconi Gec Ltd Optical delay lines
US5325392A (en) * 1992-03-06 1994-06-28 Nippon Telegraph And Telephone Corporation Distributed reflector and wavelength-tunable semiconductor laser
SE470454B (en) * 1992-08-26 1994-04-11 Ericsson Telefon Ab L M Optical filter device
DE69613999T2 (en) 1995-12-12 2002-04-04 British Telecomm PRODUCTION OF A CRUSH GRID
AUPQ165599A0 (en) * 1999-07-15 1999-08-05 University Of Sydney, The Optical processing method and apparatus and products thereof
AU777260B2 (en) * 1999-07-15 2004-10-07 University Of Sydney, The Grating structure and optical devices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871742A (en) * 1973-10-18 1975-03-18 Bell Telephone Labor Inc Composite thin film optical device
US4102560A (en) * 1976-04-08 1978-07-25 Rca Corporation Optical coupler
US4082425A (en) * 1976-12-16 1978-04-04 Rca Corporation Optical coupler
US4093339A (en) * 1977-05-26 1978-06-06 Bell Telephone Laboratories, Incorporated Method and apparatus for fabricating optical waveguide grating resonators
US4227769A (en) * 1978-07-24 1980-10-14 Rca Corporation Planar optical waveguide comprising thin metal oxide film incorporating a relief phase grating
JPH0666509B2 (en) * 1983-12-14 1994-08-24 株式会社日立製作所 Distributed feedback semiconductor laser device
NL8304311A (en) * 1983-12-15 1985-07-01 Philips Nv REFLECTION GRID.
JPS61222189A (en) * 1985-03-15 1986-10-02 Sharp Corp Semiconductor laser

Also Published As

Publication number Publication date
GB2209408A (en) 1989-05-10
GB2209408B (en) 1991-08-21

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950904