CA2176027A1 - Optical Filter - Google Patents

Optical Filter

Info

Publication number
CA2176027A1
CA2176027A1 CA2176027A CA2176027A CA2176027A1 CA 2176027 A1 CA2176027 A1 CA 2176027A1 CA 2176027 A CA2176027 A CA 2176027A CA 2176027 A CA2176027 A CA 2176027A CA 2176027 A1 CA2176027 A1 CA 2176027A1
Authority
CA
Canada
Prior art keywords
filter
mode
waveguides
optical filter
characteristic
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
CA2176027A
Other languages
French (fr)
Other versions
CA2176027C (en
Inventor
Alistair James Poustie
Neil Finlayson
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.)
IPG Photonics Corp
Original Assignee
Alistair James Poustie
Neil Finlayson
British Telecommunications Public Limited Company
Ipg Photonics Corporation
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 Alistair James Poustie, Neil Finlayson, British Telecommunications Public Limited Company, Ipg Photonics Corporation filed Critical Alistair James Poustie
Publication of CA2176027A1 publication Critical patent/CA2176027A1/en
Application granted granted Critical
Publication of CA2176027C publication Critical patent/CA2176027C/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
    • G02B6/24—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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29344—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by modal interference or beating, i.e. of transverse modes, e.g. zero-gap directional coupler, MMI
    • 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
    • G02B6/12007—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer
    • 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
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • 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
    • H01S5/14—External cavity lasers
    • H01S5/141—External cavity lasers using a wavelength selective device, e.g. a grating or etalon
    • 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
    • G02B6/24—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
    • G02B6/2808—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 a mixing element which evenly distributes an input signal over a number of outputs
    • G02B6/2813—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 a mixing element which evenly distributes an input signal over a number of outputs based on multimode interference effect, i.e. self-imaging
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
    • H01S3/083—Ring lasers

Abstract

An optical filter comprises a multi-mode waveguide (W2) and a single-mode waveguide (W1, W3) coupled in series, the interference of different modes at the multiple-mode/single-mode, interface being effective to filter an optical signal propagating through the waveguides to provide a desired wavelength response characteristic.
The offset between the waveguides may be varied to control the filter characteristic. The filter may be formed in the cavity of a laser to produce an output having a comb-filter characteristic. It may be used as channel selector in WDM systems.
CA002176027A 1993-11-12 1994-11-11 Optical filter Expired - Fee Related CA2176027C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP93309089.6 1993-11-12
EP93309089 1993-11-12
EP94301705 1994-03-10
EP94301705.3 1994-03-10
PCT/GB1994/002488 WO1995013552A2 (en) 1993-11-12 1994-11-11 Optical filter

Publications (2)

Publication Number Publication Date
CA2176027A1 true CA2176027A1 (en) 1995-05-18
CA2176027C CA2176027C (en) 2000-01-11

Family

ID=26134559

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002176027A Expired - Fee Related CA2176027C (en) 1993-11-12 1994-11-11 Optical filter

Country Status (6)

Country Link
US (1) US5796891A (en)
EP (1) EP0728317B1 (en)
JP (1) JPH09505154A (en)
CA (1) CA2176027C (en)
DE (1) DE69429448T2 (en)
WO (1) WO1995013552A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113131317A (en) * 2021-03-03 2021-07-16 长春理工大学 Tunable mode-locked fiber laser based on single-mode double-eccentric-core structure and control method

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US6198863B1 (en) * 1995-10-06 2001-03-06 British Telecommunications Public Limited Company Optical filters
GB9605011D0 (en) * 1996-03-08 1996-05-08 Hewlett Packard Co Multimode communications systems
SE507445C2 (en) * 1996-03-22 1998-06-08 Ericsson Telefon Ab L M Optical element
JP3251211B2 (en) * 1997-08-18 2002-01-28 日本電気株式会社 Semiconductor receiver
US6795607B1 (en) * 2000-10-11 2004-09-21 Ciena Corporation Use of tunable laser for optical performance monitoring in WDM system
KR100393609B1 (en) * 2000-12-14 2003-08-02 삼성전자주식회사 Apparatus of reducing loss variation in a multi-channel optical module by means of positional offset
US6628871B2 (en) * 2000-12-22 2003-09-30 Nortel Networks Limited Fiber fuse protection
US6993224B1 (en) 2001-11-15 2006-01-31 UNIVERSITé LAVAL Segmented waveguide array gratings (SWAG)-based archival optical memory
US6999662B2 (en) * 2001-11-15 2006-02-14 UNIVERSITé LAVAL Segmented waveguide array grating filters
US6826207B2 (en) * 2001-12-17 2004-11-30 Peleton Photonic Systems Inc. Multi-wavelength laser source based on two optical laser beat signal and method
WO2003104886A1 (en) * 2002-06-01 2003-12-18 古河電気工業株式会社 Wavelength divition multiplex optical regeneration system and wavelength division multiplex optical regeneration method
US6836421B2 (en) * 2002-08-02 2004-12-28 Unity Semiconductor Corporation Line drivers that fit within a specified line pitch
US20060090341A1 (en) * 2004-10-30 2006-05-04 Schroepfer David J Method of manufacturing solid ring wheel rims
DE102005000925A1 (en) * 2005-01-07 2006-07-20 Infineon Technologies Fiber Optics Gmbh Pins adjusting component for e.g. module adapter, has guide unit with two areas that serves for holding pins, and pressing parts connected with guide unit and exerting radial inwardly acting elastic force on pins
US7233721B2 (en) * 2005-09-30 2007-06-19 Corning Incorporated Low loss spectrally periodic all-fiber filters
US7894692B2 (en) * 2009-05-19 2011-02-22 Ipg Photonics Corporation Method and device for suppressing high-order modes in MM fibers
US8213750B2 (en) * 2009-05-20 2012-07-03 Ipg Photonics Corporation Method and device for suppressing cross-coupling component in multimode fibers
EP2538253A1 (en) * 2011-06-23 2012-12-26 Alcatel Lucent A multimode optical fiber interferometer
CN103956640B (en) * 2014-05-20 2016-10-05 天津理工大学 A kind of switchable optical fiber laser of wavelength based on Graphene and core shift structure
CN104409951B (en) * 2014-11-21 2017-08-04 天津大学 A kind of all -fiber mode-locked laser based on multimode interference couplers Kerr effect
US10782478B2 (en) * 2016-08-03 2020-09-22 Nippon Telegraph And Telephone Corporation Inter-mode loss difference compensator and optical amplifier

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US4087159A (en) * 1974-09-20 1978-05-02 Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. Self imaging system using a waveguide
US4176911A (en) * 1976-04-28 1979-12-04 Bell Telephone Laboratories, Incorporated Graded index optical fiber
JPS5468254A (en) * 1977-11-10 1979-06-01 Fujitsu Ltd Mode scrambler
JPS6289003A (en) * 1985-10-15 1987-04-23 Nippon Telegr & Teleph Corp <Ntt> Fiber type band pass/stop filter
EP0246793A3 (en) * 1986-05-19 1988-06-01 AT&T Corp. High-power, fundamental transverse mode laser
US4915468A (en) * 1987-02-20 1990-04-10 The Board Of Trustees Of The Leland Stanford Junior University Apparatus using two-mode optical waveguide with non-circular core
GB2215854B (en) * 1988-03-26 1992-02-26 Stc Plc Active optical fibre star couplers
FR2634906B1 (en) * 1988-08-01 1991-09-13 Alsthom Cgee PASSIVE OPTICAL COUPLER FOR POLYMERIC FIBERS
CA2015211C (en) * 1989-04-28 1993-10-05 Takao Matsumoto Optical wavelength demultiplexer
US4974931A (en) * 1989-11-13 1990-12-04 At&T Bell Laboratories Wavelength selective mode couplers
USRE35516E (en) * 1990-07-27 1997-05-20 Lucent Technologies Inc. Adiabatic reflection Y-coupler apparatus
GB9027657D0 (en) * 1990-12-20 1991-02-13 Secr Defence Optical device
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US5067789A (en) * 1991-02-14 1991-11-26 Corning Incorporated Fiber optic coupling filter and amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113131317A (en) * 2021-03-03 2021-07-16 长春理工大学 Tunable mode-locked fiber laser based on single-mode double-eccentric-core structure and control method
CN113131317B (en) * 2021-03-03 2022-05-10 长春理工大学 Tunable mode-locked fiber laser based on single-mode double-eccentric-core structure and control method

Also Published As

Publication number Publication date
EP0728317B1 (en) 2001-12-12
WO1995013552A2 (en) 1995-05-18
EP0728317A1 (en) 1996-08-28
US5796891A (en) 1998-08-18
DE69429448T2 (en) 2002-07-25
WO1995013552A3 (en) 1995-07-20
CA2176027C (en) 2000-01-11
DE69429448D1 (en) 2002-01-24
JPH09505154A (en) 1997-05-20

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Effective date: 20121113