DE69323707D1 - Methode zur Herstellung von verteilten Bragg-Reflektoren mit variierendem Gitterabstand in optischen Medien - Google Patents

Methode zur Herstellung von verteilten Bragg-Reflektoren mit variierendem Gitterabstand in optischen Medien

Info

Publication number
DE69323707D1
DE69323707D1 DE69323707T DE69323707T DE69323707D1 DE 69323707 D1 DE69323707 D1 DE 69323707D1 DE 69323707 T DE69323707 T DE 69323707T DE 69323707 T DE69323707 T DE 69323707T DE 69323707 D1 DE69323707 D1 DE 69323707D1
Authority
DE
Germany
Prior art keywords
production
optical media
distributed bragg
bragg reflectors
grating spacing
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 - Fee Related
Application number
DE69323707T
Other languages
English (en)
Other versions
DE69323707T2 (de
Inventor
Victor Mizrahi
Linn Frederick Mollenauer
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.)
AT&T Corp
Original Assignee
AT&T 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
Application filed by AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69323707D1 publication Critical patent/DE69323707D1/de
Publication of DE69323707T2 publication Critical patent/DE69323707T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
    • G02B6/02133Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating using beam interference
    • G02B6/02138Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating using beam interference based on illuminating a phase mask
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00Fibre or filament compositions
    • C03C13/04Fibre optics, e.g. core and clad fibre compositions
    • C03C13/045Silica-containing oxide glass compositions
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/62Surface treatment of fibres or filaments made from glass, minerals or slags by application of electric or wave energy; by particle radiation or ion implantation
    • C03C25/6206Electromagnetic waves
    • C03C25/6208Laser
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/62Surface treatment of fibres or filaments made from glass, minerals or slags by application of electric or wave energy; by particle radiation or ion implantation
    • C03C25/6206Electromagnetic waves
    • C03C25/6226Ultraviolet
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
    • G02B6/02133Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating using beam interference
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12Light 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
    • G02B6/122Basic optical elements, e.g. light-guiding paths
    • G02B6/124Geodesic lenses or integrated gratings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09Processes or apparatus for excitation, e.g. pumping
    • H01S3/091Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00Type of glass produced
    • C03B2201/06Doped silica-based glasses
    • C03B2201/30Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/34Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with rare earth metals, i.e. with Sc, Y or lanthanides, e.g. for laser-amplifiers
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00Fibre product details, e.g. structure, shape
    • C03B2203/10Internal structure or shape details
    • C03B2203/18Axial perturbations, e.g. in refractive index or composition
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/0208Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/0208Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
    • G02B6/02085Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response characterised by the grating profile, e.g. chirped, apodised, tilted, helical
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02057Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
    • G02B6/02152Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating involving moving the fibre or a manufacturing element, stretching of the fibre
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • H01S3/0675Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09Processes or apparatus for excitation, e.g. pumping
    • H01S3/091Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094015Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with pump light recycling, i.e. with reinjection of the unused pump light back into the fiber, e.g. by reflectors or circulators

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
DE69323707T 1992-12-23 1993-12-03 Methode zur Herstellung von verteilten Bragg-Reflektoren mit variierendem Gitterabstand in optischen Medien Expired - Fee Related DE69323707T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/995,492 US5363239A (en) 1992-12-23 1992-12-23 Method for forming spatially-varying distributed Bragg reflectors in optical media

Publications (2)

Publication Number Publication Date
DE69323707D1 true DE69323707D1 (de) 1999-04-08
DE69323707T2 DE69323707T2 (de) 1999-10-14

Family

ID=25541883

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69323707T Expired - Fee Related DE69323707T2 (de) 1992-12-23 1993-12-03 Methode zur Herstellung von verteilten Bragg-Reflektoren mit variierendem Gitterabstand in optischen Medien

Country Status (4)

Country Link
US (2) US5363239A (de)
EP (2) EP0604039B1 (de)
JP (2) JP3224665B2 (de)
DE (1) DE69323707T2 (de)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5712715A (en) * 1992-12-23 1998-01-27 Lucent Technologies Inc. Optical transmission system with spatially-varying Bragg reflector
US5625472A (en) * 1992-12-23 1997-04-29 Lucent Technologies Inc. Method for forming distributed Bragg reflectors in optical media
GB2295689B (en) * 1994-12-03 1998-04-22 Northern Telecom Ltd Bragg reflection gratings in optical fibres
WO1996023739A1 (en) * 1995-02-01 1996-08-08 Plasma Optical Fibre B.V. Optical fiber having reduced polarisation mode dispersion
IT1278383B1 (it) 1995-02-23 1997-11-20 Cselt Centro Studi Lab Telecom Procedimento per la fabbricazione di fibre ottiche a mantenimento di polarizzazione
JPH08338918A (ja) * 1995-04-12 1996-12-24 Sumitomo Electric Ind Ltd 光導波路型回折格子の作成方法および作成装置
GB9509874D0 (en) * 1995-05-16 1995-07-12 Univ Southampton Optical waveguide grating
US5805751A (en) * 1995-08-29 1998-09-08 Arroyo Optics, Inc. Wavelength selective optical couplers
US6236782B1 (en) 1995-08-29 2001-05-22 Arroyo Optics, Inc. Grating assisted coupler devices
US5875272A (en) * 1995-10-27 1999-02-23 Arroyo Optics, Inc. Wavelength selective optical devices
CA2163061C (en) * 1995-11-16 2002-01-08 Yves Painchaud Method for spatially controlling the period and amplitude of bragg filters
US5903689A (en) * 1995-11-16 1999-05-11 Institut National D'optique Method for spatially controlling the period and amplitude of BRAGG filters
US5764829A (en) * 1996-02-26 1998-06-09 Lucent Technologies Inc. Optical signal shaping device for complex spectral shaping applications
GB2316760A (en) * 1996-08-23 1998-03-04 Univ Southampton Fabricating optical waveguide gratings
US6169830B1 (en) 1996-08-26 2001-01-02 Arroyo Optics, Inc. Methods of fabricating grating assisted coupler devices
US5754718A (en) * 1996-08-26 1998-05-19 Jds Fitel Inc. Hybrid optical filtering circuit
US6195483B1 (en) * 1996-09-30 2001-02-27 The United States Of America As Represented By The Secretary Of The Navy Fiber Bragg gratings in chalcogenide or chalcohalide based infrared optical fibers
US5718738A (en) * 1996-11-04 1998-02-17 Lucent Technologies Inc. Method for making continuously chirped fiber bragg gratings
FR2764394B1 (fr) * 1997-06-10 1999-08-06 France Telecom Banc de photoinscription pour la realisation de reseaux de bragg
US5912999A (en) * 1997-10-02 1999-06-15 Minnesota Mining And Manufacturing Company Method for fabrication of in-line optical waveguide index grating of any length
JPH1195033A (ja) * 1997-07-23 1999-04-09 Sumitomo Electric Ind Ltd 回折格子型帯域透過フィルタ及びその製造方法
GB2329484A (en) * 1997-09-22 1999-03-24 Northern Telecom Ltd Writing Bragg reflection gratings in optical waveguides
US6035083A (en) * 1997-10-02 2000-03-07 3M Innovative Company Method for writing arbitrary index perturbations in a wave-guiding structure
KR100294540B1 (ko) 1997-12-31 2001-07-12 윤종용 가변형처핑격자
GB9808265D0 (en) * 1998-04-17 1998-06-17 Univ Southampton Optical fibre laser
FR2778750B1 (fr) * 1998-05-12 2003-05-09 Commissariat Energie Atomique Procede d'inscription de reseaux de bragg, appareil pour la mise en oeuvre de ce procede et dispositif a reseaux de bragg obtenus par ce procede
US6694075B1 (en) * 1998-07-01 2004-02-17 Corning Incorporated Apodization of optical filters with multiple exposures of photosensitive media
CA2336329A1 (en) * 1998-07-01 2000-01-13 Corning Incorporated Apodization of optical filters formed in photosensitive media
US6449073B1 (en) 1998-07-21 2002-09-10 Corvis Corporation Optical communication system
GB2339921B (en) * 1998-07-21 2000-06-14 Exitech Ltd The use of a laser pulse extender to increase the speed for writing bragg gratings in optical fibres
US7130540B2 (en) * 1998-07-21 2006-10-31 Corvis Corporation Optical transmission systems, devices, and methods
US6522797B1 (en) 1998-09-01 2003-02-18 Input/Output, Inc. Seismic optical acoustic recursive sensor system
CA2272008A1 (en) 1999-05-11 2000-11-11 Francois Trepanier Device and method for recording an interference pattern in a photosensitive medium
US6771905B1 (en) 1999-06-07 2004-08-03 Corvis Corporation Optical transmission systems including optical switching devices, control apparatuses, and methods
US6278817B1 (en) 1999-08-31 2001-08-21 Corning, Incorporated Asymmetric low dispersion bragg grating filter
CN1402896A (zh) 1999-09-29 2003-03-12 康宁O.T.I股份公司 制造光纤激光器的方法
US7184616B2 (en) * 2000-11-20 2007-02-27 Aculight Corporation Method and apparatus for fiber Bragg grating production
EP1249720A1 (de) * 2001-04-09 2002-10-16 Alcatel Bragg-Gitter-Filter in einem optischen Wellenleiter
US20030017421A1 (en) * 2001-07-18 2003-01-23 Miri Park Holographic grating fabrication using mirror with surface curvature
CA2354321A1 (en) * 2001-07-26 2003-01-26 Viamode Photonics Inc. Apparatus for writing features in or on photosensitive medium
EP1293810A1 (de) * 2001-09-12 2003-03-19 Agilent Technologies, Inc. (a Delaware corporation) Verfharen zur Herstellung eines optischen Wellenleiters in einem Telluritglas
CA2377208A1 (en) * 2001-10-09 2003-04-09 Teraxion Inc. Method and apparatus for recording an optical grating in a photosensitive medium
US6633385B2 (en) 2001-10-11 2003-10-14 Teraxion Inc. System and method for recording interference fringes in a photosensitive medium
US6922529B2 (en) * 2002-08-09 2005-07-26 Corvis Corporation Optical communications systems, devices, and methods
US7310463B2 (en) * 2002-09-09 2007-12-18 Kyocera Corporation Optical structural body, its manufacturing method and optical element
CA2436499C (en) * 2003-03-21 2012-04-17 Her Majesty In Right Of Canada As Represented By The Minister Of Industry Bragg grating and method of producing a bragg grating using an ultrafast laser
WO2006014376A1 (en) * 2004-07-02 2006-02-09 The Government Of The United States Of America, As Represented By The Secretary Of The Navy Naval Research Laboratory Deformable mirror apparatus
US8049885B1 (en) 2008-05-15 2011-11-01 Ondax, Inc. Method and apparatus for large spectral coverage measurement of volume holographic gratings
US7986407B2 (en) 2008-08-04 2011-07-26 Ondax, Inc. Method and apparatus using volume holographic wavelength blockers
US8369017B2 (en) * 2008-10-27 2013-02-05 Ondax, Inc. Optical pulse shaping method and apparatus
US9592644B2 (en) * 2013-03-15 2017-03-14 Ofs Fitel, Llc Method of and apparartus for inscription of fiber gratings from multiple azimuthal angles and fiber so inscribed
US9599565B1 (en) 2013-10-02 2017-03-21 Ondax, Inc. Identification and analysis of materials and molecular structures
US9587983B1 (en) 2015-09-21 2017-03-07 Ondax, Inc. Thermally compensated optical probe
WO2018020498A1 (en) * 2016-07-25 2018-02-01 Ramot At Tel-Aviv University Ltd. System and method for optical filtering
CN112684657B (zh) * 2020-12-24 2022-02-01 四川长虹电器股份有限公司 一种准直固态发光芯片或芯片阵列光源的方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909110A (en) * 1974-11-11 1975-09-30 Bell Telephone Labor Inc Reduction of dispersion in a multimode fiber waveguide with core index fluctuations
US4093338A (en) * 1976-01-12 1978-06-06 Bell Telephone Laboratories, Incorporated Apparatus for piecewise generation of grating-like patterns
GB2161612B (en) * 1984-07-11 1988-02-03 Stc Plc Optical fibre transmission systems
EP0191063B1 (de) * 1984-08-13 1992-05-13 United Technologies Corporation Verfahren zum einlagern optischer gitter in faseroptik
JPS61262717A (ja) * 1985-05-17 1986-11-20 Ricoh Co Ltd 回折効率の分布を補正したホログラムデイスクの作製方法及びその装置
US5007705A (en) * 1989-12-26 1991-04-16 United Technologies Corporation Variable optical fiber Bragg filter arrangement
US5061032A (en) * 1989-12-26 1991-10-29 United Technologies Corporation Optical waveguide embedded light redirecting and focusing bragg grating arrangement
JPH03246510A (ja) * 1990-02-23 1991-11-01 Sharp Corp 回折格子光結合器の作成方法
GB9007912D0 (en) * 1990-04-06 1990-06-06 British Telecomm A method of forming a refractive index grating in an optical waveguide
US5291317A (en) * 1990-07-12 1994-03-01 Applied Holographics Corporation Holographic diffraction grating patterns and methods for creating the same
US5066133A (en) * 1990-10-18 1991-11-19 United Technologies Corporation Extended length embedded Bragg grating manufacturing method and arrangement
GB9024326D0 (en) * 1990-11-08 1990-12-19 British Telecomm Method of forming optical fibre gratings
US5367588A (en) * 1992-10-29 1994-11-22 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Communications Method of fabricating Bragg gratings using a silica glass phase grating mask and mask used by same
US5104209A (en) * 1991-02-19 1992-04-14 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Communications Method of creating an index grating in an optical fiber and a mode converter using the index grating
FR2674642B1 (fr) * 1991-03-25 1993-12-03 Gaz De France Fibre optique a reseau de bragg interne variable et ses applications.
GB2254183B (en) * 1991-03-27 1995-01-18 Marconi Gec Ltd An amplifier/filter combination
US5305336A (en) * 1992-01-29 1994-04-19 At&T Bell Laboratories Compact optical pulse source
US5461687A (en) * 1992-03-18 1995-10-24 Trw Inc. Wavelength controlled optical true time delay generator
US5237576A (en) * 1992-05-05 1993-08-17 At&T Bell Laboratories Article comprising an optical fiber laser
US5351321A (en) * 1992-10-20 1994-09-27 Elias Snitzer Bragg grating made in optical waveguide
US5400422A (en) * 1993-01-21 1995-03-21 The United States Of America As Represented By The Secretary Of The Navy Technique to prepare high-reflectance optical fiber bragg gratings with single exposure in-line or fiber draw tower
US5388173A (en) * 1993-12-20 1995-02-07 United Technologies Corporation Method and apparatus for forming aperiodic gratings in optical fibers

Also Published As

Publication number Publication date
US5636304A (en) 1997-06-03
US5363239A (en) 1994-11-08
JP3224665B2 (ja) 2001-11-05
EP0604039A3 (de) 1994-08-31
DE69323707T2 (de) 1999-10-14
EP0604039B1 (de) 1999-03-03
JP3575689B2 (ja) 2004-10-13
EP0604039A2 (de) 1994-06-29
JP2001305327A (ja) 2001-10-31
EP0631158A1 (de) 1994-12-28
JPH06230208A (ja) 1994-08-19

Similar Documents

Publication Publication Date Title
DE69323707T2 (de) Methode zur Herstellung von verteilten Bragg-Reflektoren mit variierendem Gitterabstand in optischen Medien
DE69326434D1 (de) Methode zur Herstellung von verteilten Bragg-Reflektoren in optischen Medien
DE68928586D1 (de) Optisches aufzeichnungsmedium und methode zu dessen herstellung
DE69229653D1 (de) Verfahren zur Herstellung von Polycarbonaten
DE69412597D1 (de) Methode zur herstellung von gelatine
DE69313112T2 (de) Methode zur herstellung von abriebeständigen katalysator-bindemitteln
DE69030364D1 (de) Verfahren zur Herstellung von aromatischen Polycarbonaten
DE69204989D1 (de) Verfahren zur kontinuierlichen herstellung von würze.
DE69427848D1 (de) Unterstützungssystem zur Herstellung von Wörterbüchern
DE69214686D1 (de) Verfahren zur Herstellung von Polyestern mit verbesserter thermooxydativer Stabilität
DE69513159D1 (de) Verfahren zur herstellung von polycarbonaten mit hydroxylendgruppen
DE69505580T2 (de) Verfahren zur Herstellung aromatischer Polycarbonate
DE69415722D1 (de) Verfahren zur Herstellung von Polycarbonaten
DE69025425D1 (de) Gerät zur Herstellung von optischen Scheiben
DE69228504D1 (de) Verfahren zur Herstellung von Copolycarbonat
DE69423179D1 (de) Prozess zur Herstellung von optisch aktiven 2-Amino-1-phenylethanol Derivaten
DE58908790D1 (de) Verfahren zur Herstellung von aromatischen Polycarbonaten.
DE69022743D1 (de) Verfahren zur hydrothermalen herstellung von einkristallen mit optischer qualität.
DE69118413D1 (de) Verfahren zur Herstellung optisch lesbarer Medien mit Informationen in Relief
DE69219428D1 (de) Verfahren zur Herstellung von Mitteldestillaten
DE69320423D1 (de) Verfahren zur Herstellung von Polykarbonat
DE69229313D1 (de) Verfahren zur Herstellung von Kohlenwasserstoffbrennstoffen
DE69126347D1 (de) Methode zur Verminderung der Schwierigkeit der Suchen in Analyse-durch-Synthese-Kodierung
DE69121337D1 (de) Methode zur Herstellung von Fruktose enthaltenden Oligosacchariden
DE68914956D1 (de) Methode zur Herstellung von Dialkyl- und Diallyldicarbonaten.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee