WO1998034138A3 - Optical device - Google Patents

Optical device Download PDF

Info

Publication number
WO1998034138A3
WO1998034138A3 PCT/GB1998/000293 GB9800293W WO9834138A3 WO 1998034138 A3 WO1998034138 A3 WO 1998034138A3 GB 9800293 W GB9800293 W GB 9800293W WO 9834138 A3 WO9834138 A3 WO 9834138A3
Authority
WO
WIPO (PCT)
Prior art keywords
couplers
cross
input waveguides
coupler
dimension
Prior art date
Application number
PCT/GB1998/000293
Other languages
French (fr)
Other versions
WO1998034138A2 (en
Inventor
Selina Gail Farwell
Richard Ian Laming
Michael Nickolaos Zervas
David Culverhouse
Original Assignee
Univ Southampton
Selina Gail Farwell
Richard Ian Laming
Michael Nickolaos Zervas
David Culverhouse
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 GBGB9701940.0A external-priority patent/GB9701940D0/en
Priority claimed from GBGB9721936.4A external-priority patent/GB9721936D0/en
Application filed by Univ Southampton, Selina Gail Farwell, Richard Ian Laming, Michael Nickolaos Zervas, David Culverhouse filed Critical Univ Southampton
Priority to AU61059/98A priority Critical patent/AU6105998A/en
Publication of WO1998034138A2 publication Critical patent/WO1998034138A2/en
Publication of WO1998034138A3 publication Critical patent/WO1998034138A3/en

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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
    • G02B6/2835—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0128—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects
    • G02F1/0131—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence
    • G02F1/0134—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence in optical waveguides

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

An optical fibre device comprising an optical fibre coupler formed of two or more optical fibres fused together at a coupling region, at least a part of the coupling region being asymmetrical across its cross section. In summary, at least preferred embodiments of the invention provide a method of manufacturing polarisation insensitive couplers is achieved in asymmetric couplers by precisely controlling the cross-sectional shape. The shape required will depend on the extent of the dissimilarity between the input waveguides and possibly the size of the waveguide. The four-fold symmetry in the present couplers is broken either by the two input waveguides having different outer dimension and/or any other fibre parameter. The fibre parameters differing in the two input waveguides could be any of (a) outer cladding dimension, (b) cladding refractive index, (c) numerical aperture and (d) code dimension. A method of manufacturing an asymmetric coupler by progressive stretching, wherein the birefringence in the coupler resulting from the progressive stretching is substantially removed by precise control of the waist cross-sectional shape. Particular attention must be paid to the temperature distribution along the stretched region of glass in order to fabricate couplers with a uniform degree of fusion along their length.
PCT/GB1998/000293 1997-01-30 1998-01-30 Optical device WO1998034138A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61059/98A AU6105998A (en) 1997-01-30 1998-01-30 Optical device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9701940.0 1997-01-30
GBGB9701940.0A GB9701940D0 (en) 1997-01-30 1997-01-30 Polarisation independent switch for optical network
GBGB9721936.4A GB9721936D0 (en) 1997-10-17 1997-10-17 Non-circular photonic device
GB9721936.4 1997-10-17

Publications (2)

Publication Number Publication Date
WO1998034138A2 WO1998034138A2 (en) 1998-08-06
WO1998034138A3 true WO1998034138A3 (en) 1998-11-12

Family

ID=26310899

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000293 WO1998034138A2 (en) 1997-01-30 1998-01-30 Optical device

Country Status (2)

Country Link
AU (1) AU6105998A (en)
WO (1) WO1998034138A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60003053T2 (en) * 1999-09-30 2003-12-04 Corning Oti Spa METHOD FOR PRODUCING AN OPTICAL COUPLER FOR DERIVING A SIGNAL FROM A POLARIZATION-RESISTING OPTICAL FIBER, AND CORRESPONDING COUPLER
US6701046B1 (en) 1999-09-30 2004-03-02 Corning O.T.I. Spa Method for producing an optical coupler for extracting a signal from a polarization maintaining optical fiber, and corresponding coupler
JP6388603B2 (en) * 2013-02-01 2018-09-12 ポリヴァロール リミテッド パートナーシップＰｏｌｙｖａｌｏｒ， Ｌｉｍｉｔｅｄ Ｐａｒｔｎｅｒｓｈｉｐ Asymmetric optical fiber coupler
CN107193084B (en) * 2017-06-09 2023-06-13 广东省智能机器人研究院 All-glass integrated acousto-optic switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432421A2 (en) * 1989-12-08 1991-06-19 Corning Incorporated Chlorine-doped optical component
EP0578982A1 (en) * 1992-07-15 1994-01-19 Corning Incorporated Achromatic overclad fiber optic coupler
US5355426A (en) * 1992-09-02 1994-10-11 Gould Electronics Inc. Broadband MXN optical fiber couplers and method of making
WO1995022783A1 (en) * 1994-02-18 1995-08-24 University Of Southampton Optical device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432421A2 (en) * 1989-12-08 1991-06-19 Corning Incorporated Chlorine-doped optical component
EP0578982A1 (en) * 1992-07-15 1994-01-19 Corning Incorporated Achromatic overclad fiber optic coupler
US5355426A (en) * 1992-09-02 1994-10-11 Gould Electronics Inc. Broadband MXN optical fiber couplers and method of making
WO1995022783A1 (en) * 1994-02-18 1995-08-24 University Of Southampton Optical device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KATSUMI MORISHITA ET AL: "POLARIZATION PROPERTIES OF FUSED FIBER COUPLERS AND POLARIZING BEAMSPLITTERS", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 9, no. 11, 1 November 1991 (1991-11-01), pages 1503 - 1507, XP000243352 *
PARRIAUX O., BERNOUX F., CHARTIER G.: "Wavelength selective distributed coupling between single mode optical fibers for multiplexing", JOURNAL OF OPTICAL COMMUNICATIONS, vol. 2, no. 3, September 1981 (1981-09-01), pages 150 - 109, XP002065132 *

Also Published As

Publication number Publication date
WO1998034138A2 (en) 1998-08-06
AU6105998A (en) 1998-08-25

Similar Documents

Publication Publication Date Title
US6078716A (en) Thermally expanded multiple core fiber
CA1320372C (en) Non-adiabatically-tapered connector
US5268979A (en) Achromatic overclad fiber optic coupler
DE69019684T2 (en) Achromatic fiber optical coupler and its manufacturing process.
US5647040A (en) Tunable optical coupler using photosensitive glass
EP0637762A4 (en) Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler.
IL102713A (en) Mount for polarization-maintaining optical fiber coupler
AU587846B2 (en) Method of making low loss fiber optic coupler
TW373084B (en) Optical couplers with multilayer fibers
EP0840148B1 (en) Optical fibre coupler and a fabrication method for the same
CA2026715A1 (en) Chlorine-doped optical component
KR900018698A (en) Optical fiber connector and manufacturing method
EP0610973B1 (en) Optical fiber coupler
WO1998034138A3 (en) Optical device
US5594823A (en) Method of manufacturing a multi-fiber optical cross-coupler, and an optical cross-coupler obtained by performing the method
JPS5646205A (en) Optical fiber coupler and its manufacture
JPS59142521A (en) Optical branch element and its manufacture
CN104678487A (en) Gas-clad polarization-maintaining optical fiber
JP2828251B2 (en) Optical fiber coupler
EP0295039A3 (en) Optical waveguide coupler
JPH01148724A (en) Production of polarization retaining fiber
JPS63216008A (en) Wide-wavelength region single-mode fused coupler
JPH04107511A (en) Production of polarization maintaining optical fiber coupler
JP3260162B2 (en) Star coupler manufacturing method
Sheem et al. Optical Fiber-to-Fiber Evanescent Field Coupler.

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998532637

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase