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DE69734031D1 - Optische Fasern für optische Dämpfung - Google Patents

Optische Fasern für optische Dämpfung

Info

Publication number
DE69734031D1
DE69734031D1 DE69734031T DE69734031T DE69734031D1 DE 69734031 D1 DE69734031 D1 DE 69734031D1 DE 69734031 T DE69734031 T DE 69734031T DE 69734031 T DE69734031 T DE 69734031T DE 69734031 D1 DE69734031 D1 DE 69734031D1
Authority
DE
Germany
Prior art keywords
optical
damping
fibers
optical fibers
optical damping
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.)
Expired - Lifetime
Application number
DE69734031T
Other languages
English (en)
Other versions
DE69734031T2 (de
Inventor
Yoshiaki Takeuchi
Ryo Nagase
Seiko Mitachi
Yuichi Morishita
Akira Kumagai
Yumi Ariga
Kenichi Muta
Kazunari Sugi
Masashi Saijo
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.)
Nippon Telegraph and Telephone Corp
SWCC Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 JP00000496A external-priority patent/JP3271886B2/ja
Priority claimed from JP12663396A external-priority patent/JP3209497B2/ja
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of DE69734031D1 publication Critical patent/DE69734031D1/de
Application granted granted Critical
Publication of DE69734031T2 publication Critical patent/DE69734031T2/de
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
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03638—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only
    • G02B6/0365—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only arranged - - +
    • 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
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • G02B6/03627—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - +
    • 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
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03638—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only
    • G02B6/03644—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only arranged - + -
    • 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
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
    • G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator
    • 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
    • G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Light Guides In General And Applications Therefor (AREA)
DE69734031T 1996-01-04 1997-01-03 Optische Fasern für optische Dämpfung Expired - Lifetime DE69734031T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP496 1996-01-04
JP00000496A JP3271886B2 (ja) 1996-01-04 1996-01-04 光減衰性光ファイバ
JP12663396A JP3209497B2 (ja) 1996-05-22 1996-05-22 光減衰性光ファイバ
JP12663396 1996-05-22

Publications (2)

Publication Number Publication Date
DE69734031D1 true DE69734031D1 (de) 2005-09-29
DE69734031T2 DE69734031T2 (de) 2006-03-30

Family

ID=26332908

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69734031T Expired - Lifetime DE69734031T2 (de) 1996-01-04 1997-01-03 Optische Fasern für optische Dämpfung

Country Status (3)

Country Link
US (1) US5841926A (de)
EP (1) EP0783117B1 (de)
DE (1) DE69734031T2 (de)

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EP0884614A1 (de) * 1997-06-13 1998-12-16 Sumitomo Electric Industries, Ltd. Optische Faser
US6411762B1 (en) * 1997-12-09 2002-06-25 Scientific-Atlanta, Inc. Optical fiber with irregularities at cladding boundary
US6498888B1 (en) * 1998-04-22 2002-12-24 Institut National D'optique High-attenuation fiber with cladding mode suppression for all-fiber optical attenuator
EP1110109A1 (de) 1998-08-25 2001-06-27 Quante Ag Lichtleitfaser aus kunststoff
US6327403B1 (en) * 1999-06-10 2001-12-04 Lasercomm Inc. Reducing mode interference in transmission of LP02 Mode in optical fibers
US6434311B1 (en) * 1999-06-10 2002-08-13 Lasercomm Inc. Reducing mode interference in transmission of a high order mode in optical fibers
RU2279700C2 (ru) * 1999-10-22 2006-07-10 Шова Электрик Вайер Энд Кейбл Ко. Лтд. Оптический аттенюатор
US6516114B2 (en) 2000-06-27 2003-02-04 Oluma, Inc. Integration of fibers on substrates fabricated with grooves
US6501875B2 (en) 2000-06-27 2002-12-31 Oluma, Inc. Mach-Zehnder inteferometers and applications based on evanescent coupling through side-polished fiber coupling ports
US6597833B1 (en) 2000-06-27 2003-07-22 Oluma, Inc. Wavelength-division multiplexers and demultiplexers based on mach-zehnder interferometers and evanescent coupling
US6625349B2 (en) 2000-06-27 2003-09-23 Oluma, Inc. Evanescent optical coupling between a waveguide formed on a substrate and a side-polished fiber
US6621951B1 (en) 2000-06-27 2003-09-16 Oluma, Inc. Thin film structures in devices with a fiber on a substrate
US6490391B1 (en) 2000-07-12 2002-12-03 Oluma, Inc. Devices based on fibers engaged to substrates with grooves
US6571035B1 (en) 2000-08-10 2003-05-27 Oluma, Inc. Fiber optical switches based on optical evanescent coupling between two fibers
US6621952B1 (en) 2000-08-10 2003-09-16 Oluma, Inc. In-fiber variable optical attenuators and modulators using index-changing liquid media
CA2355819A1 (en) * 2000-08-28 2002-02-28 Sumitomo Electric Industries, Ltd. Optical fiber, method of making optical fiber preform, and method of making optical fiber
US6542663B1 (en) 2000-09-07 2003-04-01 Oluma, Inc. Coupling control in side-polished fiber devices
JP2002101045A (ja) * 2000-09-21 2002-04-05 Nec Corp 波長分散補償装置及び光伝送路
CA2324193C (en) * 2000-10-25 2008-05-06 Itf Optical Technologies Inc.-Technologies Optiques Itf Inc. Internal termination for optical fibers
KR20020064506A (ko) * 2001-02-02 2002-08-09 (주)옵토네스트 평탄한 감쇄이득을 갖는 광감쇄기용 광섬유
US6744948B1 (en) 2001-06-20 2004-06-01 Oluma, Inc. Fiber tap monitor based on evanescent coupling
GB2379279B (en) * 2001-08-31 2005-10-26 Gsi Lumonics Ltd Laser processing system and optical fibres
IL147554A (en) 2002-01-10 2005-11-20 Kiloambda Ip Ltd Optical limiter
JP2003294953A (ja) * 2002-01-29 2003-10-15 Nippon Electric Glass Co Ltd 光デバイス及びその製造方法
WO2003067723A1 (fr) * 2002-02-06 2003-08-14 Mitsubishi Denki Kabushiki Kaisha Fibre optique multimode, amplificateur laser a fibre, et oscillateur laser a fibre
CA2489319A1 (en) * 2002-07-25 2004-02-05 Showa Electric Wire & Cable Co., Ltd. Optical filter
JP2004177630A (ja) * 2002-11-27 2004-06-24 Showa Electric Wire & Cable Co Ltd 光信号減衰用ファイバ
JP2004240390A (ja) * 2002-12-10 2004-08-26 Sumitomo Electric Ind Ltd 光ファイバ
EP1467239B1 (de) * 2003-04-09 2011-09-21 KiloLambda Technologies Ltd. Optischer Leistungsbegrenzer
JP4047232B2 (ja) 2003-06-18 2008-02-13 株式会社フジクラ 高次モードファイバ用モード変換器
US7215860B2 (en) * 2005-05-02 2007-05-08 Lucent Technologies Inc. Optical transmission fiber with a glass guiding cladding
GB2444091A (en) 2006-11-24 2008-05-28 Gsi Group Ltd A Laser Amplifier
WO2008110668A1 (en) * 2007-03-15 2008-09-18 Liekki Oy Optical fiber structure and a method of producing thereof
JP5910087B2 (ja) * 2011-02-25 2016-04-27 住友電気工業株式会社 マルチコア光ファイバから出力される光の受光方法、及び、分離装置
US10162109B2 (en) 2017-02-07 2018-12-25 Corning Incorporated Multimode optical fibers for attenuators

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264816A (en) * 1975-11-25 1977-05-28 Oki Electric Ind Co Ltd Signal sending unit for exchange
JPS542754A (en) 1977-06-08 1979-01-10 Toshiba Corp Stationary attenuator for optical fiber communication
JPS574006A (en) * 1980-06-09 1982-01-09 Toshiba Corp Attenuator for optical fiber and its production
JPS59174541A (ja) * 1983-01-11 1984-10-03 Hitachi Cable Ltd 偏波面保存光フアイバ
US4852968A (en) * 1986-08-08 1989-08-01 American Telephone And Telegraph Company, At&T Bell Laboratories Optical fiber comprising a refractive index trench
JPS6396504U (de) 1986-12-11 1988-06-22
JPS6396506U (de) 1986-12-12 1988-06-22
GB8713081D0 (en) * 1987-06-04 1987-07-08 Pirelli General Plc Optical fibre attenuators
US4877306A (en) * 1987-09-30 1989-10-31 Corning Glass Works Coated optical waveguide fibers
JPH0361547U (de) 1989-10-23 1991-06-17
JP2964730B2 (ja) * 1991-09-30 1999-10-18 日本電気株式会社 プラズマディスプレイパネル
EP0553982A1 (de) * 1992-01-29 1993-08-04 General Electric Company Amorphe Mehrschicht-Lawinenphotodiode
JPH05264816A (ja) * 1992-03-19 1993-10-15 Showa Electric Wire & Cable Co Ltd 光減衰器
JP3142028B2 (ja) * 1992-09-28 2001-03-07 セイコーインスツルメンツ株式会社 光減衰器
JPH07118663B2 (ja) 1993-04-16 1995-12-18 日本電気株式会社 信号検出回路
JP3233503B2 (ja) * 1993-07-29 2001-11-26 昭和電線電纜株式会社 光減衰器
US5509101A (en) * 1994-07-11 1996-04-16 Corning Incorporated Radiation resistant optical waveguide fiber and method of making same

Also Published As

Publication number Publication date
EP0783117B1 (de) 2005-08-24
EP0783117A3 (de) 2000-03-22
US5841926A (en) 1998-11-24
EP0783117A2 (de) 1997-07-09
DE69734031T2 (de) 2006-03-30

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: SHOWA ELECTRIC WIRE & CABLE CO., LTD., KAWASAKI, K

Owner name: NIPPON TELEGRAPH & TELEPHONE CO. LTD., TOKIO/TOKYO

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: NIPPON TELEGRAPH & TELEPHONE CO. LTD., TOKIO/T, JP

Owner name: SWCC SHOWA DEVICE TECHNOLOGY CO., LTD., TOKYO, JP

8327 Change in the person/name/address of the patent owner

Owner name: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, TO, JP

Owner name: SWCC SHOWA CABLE SYSTEMS CO.LTD., TOKYO, JP