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BR9813450A - Rare earth-induced double-coated optical fibers - Google Patents

Rare earth-induced double-coated optical fibers

Info

Publication number
BR9813450A
BR9813450A BR9813450-7A BR9813450A BR9813450A BR 9813450 A BR9813450 A BR 9813450A BR 9813450 A BR9813450 A BR 9813450A BR 9813450 A BR9813450 A BR 9813450A
Authority
BR
Brazil
Prior art keywords
coating layer
optical fibers
irregularities
core
rare earth
Prior art date
Application number
BR9813450-7A
Other languages
Portuguese (pt)
Inventor
Douglas W Anthon
Peter Maton
Ashley Speed
Original Assignee
Scientific Atlanta
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 Scientific Atlanta filed Critical Scientific Atlanta
Publication of BR9813450A publication Critical patent/BR9813450A/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
    • G02B6/02—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
    • G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
    • 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
    • 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
    • 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
    • G02B6/105—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type having optical polarisation effects
    • 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
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Lasers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Glass Compositions (AREA)

Abstract

<B>FIBRAS óPTICAS INDUTADAS COM TERRAS RARAS COM DUPLO REVESTIMENTO<D> Uma fibra óptica (10) feita com um núcleo central (12), uma primeira camada de revestimento (16) e uma segunda camada de revestimento (18) com diversas protuberâncias ou irregularidades formadas na superfície limitadora externa de outro modo geralmente circular da primeira camada de revestimento. As irregularidades na primeira camada de revestimento interrompem a propagação de raios oblíquos e encorajam acoplamento dentro do núcleo. As irregularidades são formadas pela perfuração de orifícios (44 - 58) na fibra pré-formada, os quais são paralelos ao seu eixo geométrico longitudinal, e pela inserção de hastes naqueles. é propiciada uma camada intermediária de revestimento (14) para suprimir modos de ordem mais elevada do núcleo. As fibras ópticas são usadas em lasers e amplificadores com fibras de sonda de revestimento.<B> OPTICAL FIBERS INDUCED WITH RARE LAND WITH DOUBLE COATING <D> An optical fiber (10) made with a central core (12), a first coating layer (16) and a second coating layer (18) with several protuberances or irregularities formed in the otherwise generally circular outer limiting surface of the first coating layer. The irregularities in the first coating layer interrupt the propagation of oblique rays and encourage coupling within the core. Irregularities are formed by drilling holes (44 - 58) in the preformed fiber, which are parallel to its longitudinal geometric axis, and by inserting rods into them. an intermediate coating layer (14) is provided to suppress higher order modes of the core. Optical fibers are used in lasers and amplifiers with coating probe fibers.

BR9813450-7A 1997-12-09 1998-12-07 Rare earth-induced double-coated optical fibers BR9813450A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98786297A 1997-12-09 1997-12-09
PCT/US1998/025943 WO1999030391A1 (en) 1997-12-09 1998-12-07 Double-clad rare earth doped optical fibers

Publications (1)

Publication Number Publication Date
BR9813450A true BR9813450A (en) 2001-08-28

Family

ID=25533638

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9813450-7A BR9813450A (en) 1997-12-09 1998-12-07 Rare earth-induced double-coated optical fibers

Country Status (5)

Country Link
EP (1) EP1038338A1 (en)
BR (1) BR9813450A (en)
DE (1) DE1038338T1 (en)
ES (1) ES2154251T1 (en)
WO (1) WO1999030391A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6408118B1 (en) * 2000-08-25 2002-06-18 Agere Systems Guardian Corp. Optical waveguide gratings having roughened cladding for reduced short wavelength cladding mode loss
US6477307B1 (en) 2000-10-23 2002-11-05 Nufern Cladding-pumped optical fiber and methods for fabricating
DE10059314B4 (en) 2000-11-29 2018-08-02 Tesat-Spacecom Gmbh & Co.Kg Optical fiber and method of making a photoconductive fiber
US6516124B2 (en) 2001-03-02 2003-02-04 Optical Power Systems Incorporated Fiber for enhanced energy absorption
EP1241744A1 (en) * 2001-03-12 2002-09-18 Alcatel Double-clad optical fiber and fiber amplifier
US6625363B2 (en) 2001-06-06 2003-09-23 Nufern Cladding-pumped optical fiber
US6687445B2 (en) 2001-06-25 2004-02-03 Nufern Double-clad optical fiber for lasers and amplifiers
US7116887B2 (en) 2002-03-19 2006-10-03 Nufern Optical fiber
US6959022B2 (en) * 2003-01-27 2005-10-25 Ceramoptec Gmbh Multi-clad optical fiber lasers and their manufacture
US7483610B2 (en) 2004-05-03 2009-01-27 Nufern Optical fiber having reduced defect density
US7317857B2 (en) 2004-05-03 2008-01-08 Nufem Optical fiber for delivering optical energy to or from a work object
FI120471B (en) * 2005-02-23 2009-10-30 Liekki Oy Optical fiber processing method
WO2007148127A2 (en) 2006-06-23 2007-12-27 Gsi Group Limited Fibre laser system
GB2444091A (en) * 2006-11-24 2008-05-28 Gsi Group Ltd A Laser Amplifier
US7450813B2 (en) 2006-09-20 2008-11-11 Imra America, Inc. Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers
WO2010065788A1 (en) 2008-12-04 2010-06-10 Imra America, Inc. Highly rare-earth-doped optical fibers for fiber lasers and amplifiers
US20210184418A1 (en) * 2016-02-26 2021-06-17 Coractive High-Tech Inc. Manufacturing of optical fibers with symmetry-breaking longitudinal protrusions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60200208A (en) * 1984-03-23 1985-10-09 Fujitsu Ltd Optical fiber
US5121460A (en) * 1991-01-31 1992-06-09 The Charles Stark Draper Lab., Inc. High-power mode-selective optical fiber laser
JP3630767B2 (en) * 1995-05-15 2005-03-23 株式会社フジクラ Rare earth doped polarization maintaining optical fiber
JP3298799B2 (en) * 1995-11-22 2002-07-08 ルーセント テクノロジーズ インコーポレイテッド Cladding pump fiber and its manufacturing method

Also Published As

Publication number Publication date
ES2154251T1 (en) 2001-04-01
EP1038338A1 (en) 2000-09-27
WO1999030391A1 (en) 1999-06-17
DE1038338T1 (en) 2001-02-08

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Legal Events

Date Code Title Description
B08F Application fees: dismissal - article 86 of industrial property law

Free format text: REFERENTE A 7A E 8A ANUIDADES.

B08K Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87)

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1910 DE 14/08/2007.

B15K Others concerning applications: alteration of classification

Ipc: G02B 6/036 (2006.01), G02B 6/10 (2006.0