FR2333628A1 - Procede et equipement pour la production de preformes de fibres optiques - Google Patents

Procede et equipement pour la production de preformes de fibres optiques

Info

Publication number
FR2333628A1
FR2333628A1 FR7536756A FR7536756A FR2333628A1 FR 2333628 A1 FR2333628 A1 FR 2333628A1 FR 7536756 A FR7536756 A FR 7536756A FR 7536756 A FR7536756 A FR 7536756A FR 2333628 A1 FR2333628 A1 FR 2333628A1
Authority
FR
France
Prior art keywords
burner
blank
cpds
flame
silicon
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
FR7536756A
Other languages
English (en)
Other versions
FR2333628B1 (fr
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.)
VERGNON PIERRE
Original Assignee
VERGNON PIERRE
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 VERGNON PIERRE filed Critical VERGNON PIERRE
Priority to FR7536756A priority Critical patent/FR2333628A1/fr
Publication of FR2333628A1 publication Critical patent/FR2333628A1/fr
Application granted granted Critical
Publication of FR2333628B1 publication Critical patent/FR2333628B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01413—Reactant delivery systems
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01413—Reactant delivery systems
    • C03B37/0142—Reactant deposition burners
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C13/00—Fibre or filament compositions
    • C03C13/04—Fibre optics, e.g. core and clad fibre compositions
    • C03C13/045—Silica-containing oxide glass compositions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
    • C03B2201/10—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with boron
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/20—Doped silica-based glasses doped with non-metals other than boron or fluorine
    • C03B2201/28—Doped silica-based glasses doped with non-metals other than boron or fluorine doped with phosphorus
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/31—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with germanium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/32—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/40—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/40—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C03B2201/42—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn doped with titanium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/04—Multi-nested ports
    • C03B2207/06—Concentric circular ports
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/04—Multi-nested ports
    • C03B2207/14—Tapered or flared nozzles or ports angled to central burner axis
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/20—Specific substances in specified ports, e.g. all gas flows specified
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/20—Specific substances in specified ports, e.g. all gas flows specified
    • C03B2207/22—Inert gas details
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/42—Assembly details; Material or dimensions of burner; Manifolds or supports
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/80—Feeding the burner or the burner-heated deposition site
    • C03B2207/81—Constructional details of the feed line, e.g. heating, insulation, material, manifolds, filters
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/80—Feeding the burner or the burner-heated deposition site
    • C03B2207/85—Feeding the burner or the burner-heated deposition site with vapour generated from liquid glass precursors, e.g. directly by heating the liquid
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/80—Feeding the burner or the burner-heated deposition site
    • C03B2207/85—Feeding the burner or the burner-heated deposition site with vapour generated from liquid glass precursors, e.g. directly by heating the liquid
    • C03B2207/87—Controlling the temperature
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/80—Feeding the burner or the burner-heated deposition site
    • C03B2207/90—Feeding the burner or the burner-heated deposition site with vapour generated from solid glass precursors, i.e. by sublimation
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/08—Doped silica-based glasses containing boron or halide
    • C03C2201/10—Doped silica-based glasses containing boron or halide containing boron
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/20—Doped silica-based glasses containing non-metals other than boron or halide
    • C03C2201/28—Doped silica-based glasses containing non-metals other than boron or halide containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/30—Doped silica-based glasses containing metals
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/30—Doped silica-based glasses containing metals
    • C03C2201/31—Doped silica-based glasses containing metals containing germanium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/30—Doped silica-based glasses containing metals
    • C03C2201/32—Doped silica-based glasses containing metals containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/30—Doped silica-based glasses containing metals
    • C03C2201/40—Doped silica-based glasses containing metals containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/30—Doped silica-based glasses containing metals
    • C03C2201/40—Doped silica-based glasses containing metals containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C03C2201/42—Doped silica-based glasses containing metals containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn containing titanium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C2203/00—Production processes
    • C03C2203/40—Gas-phase processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
FR7536756A 1975-12-01 1975-12-01 Procede et equipement pour la production de preformes de fibres optiques Granted FR2333628A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7536756A FR2333628A1 (fr) 1975-12-01 1975-12-01 Procede et equipement pour la production de preformes de fibres optiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7536756A FR2333628A1 (fr) 1975-12-01 1975-12-01 Procede et equipement pour la production de preformes de fibres optiques

Publications (2)

Publication Number Publication Date
FR2333628A1 true FR2333628A1 (fr) 1977-07-01
FR2333628B1 FR2333628B1 (fr) 1978-04-14

Family

ID=9163162

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536756A Granted FR2333628A1 (fr) 1975-12-01 1975-12-01 Procede et equipement pour la production de preformes de fibres optiques

Country Status (1)

Country Link
FR (1) FR2333628A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169325A1 (fr) * 1984-07-25 1986-01-29 Licentia Patent-Verwaltungs-GmbH Procédé de fabrication d'un courant d'aérosol
EP0755900A1 (fr) * 1995-07-27 1997-01-29 Heraeus Quarzglas GmbH Procédé et dispositif pour la fabrication de préformes en verre de silice par déposition en phase vapeur
WO2000039039A2 (fr) * 1998-12-30 2000-07-06 Corning Incorporated Guide d'onde dope au tantale et son procede de fabrication
EP1144913A1 (fr) * 1998-12-17 2001-10-17 Corning Incorporated Collecteur pour bruleur utilisable dans le cadre d'un processus de depot chimique en phase vapeur
EP1903011A2 (fr) * 2006-09-20 2008-03-26 Imra America, Inc. Terres rares dopées et fibres optiques de large zone dýefficacité pour lasers à fibre et amplicateurs
EP2174916A1 (fr) 2008-10-09 2010-04-14 Universite Des Sciences Et Technologies De Lille Monolithes de silice de haute pureté et son procédé de synthèse
US7787729B2 (en) 2005-05-20 2010-08-31 Imra America, Inc. Single mode propagation in fibers and rods with large leakage channels
US7792394B2 (en) 2004-12-30 2010-09-07 Imra America, Inc. Photonic bandgap fibers
US8285099B2 (en) 2004-01-16 2012-10-09 Imra America, Inc. Large core holey fibers
US8498046B2 (en) 2008-12-04 2013-07-30 Imra America, Inc. Highly rare-earth-doped optical fibers for fiber lasers and amplifiers
US9632243B2 (en) 2007-09-26 2017-04-25 Imra America, Inc. Glass large-core optical fibers

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169325A1 (fr) * 1984-07-25 1986-01-29 Licentia Patent-Verwaltungs-GmbH Procédé de fabrication d'un courant d'aérosol
US4650693A (en) * 1984-07-25 1987-03-17 Licentia Patent-Verwaltungs-Gmbh Method for producing an aerosol stream
EP0755900A1 (fr) * 1995-07-27 1997-01-29 Heraeus Quarzglas GmbH Procédé et dispositif pour la fabrication de préformes en verre de silice par déposition en phase vapeur
US5788730A (en) * 1995-07-27 1998-08-04 Heraeus Quarzglas Gmbh Process and apparatus for the production of a quartz glass blank
EP1144913A1 (fr) * 1998-12-17 2001-10-17 Corning Incorporated Collecteur pour bruleur utilisable dans le cadre d'un processus de depot chimique en phase vapeur
EP1144913A4 (fr) * 1998-12-17 2004-12-15 Corning Inc Collecteur pour bruleur utilisable dans le cadre d'un processus de depot chimique en phase vapeur
WO2000039039A3 (fr) * 1998-12-30 2000-11-09 Corning Inc Guide d'onde dope au tantale et son procede de fabrication
WO2000039039A2 (fr) * 1998-12-30 2000-07-06 Corning Incorporated Guide d'onde dope au tantale et son procede de fabrication
US10197727B2 (en) 2004-01-16 2019-02-05 Imra America, Inc. Large core holey fibers
US8285099B2 (en) 2004-01-16 2012-10-09 Imra America, Inc. Large core holey fibers
US7792394B2 (en) 2004-12-30 2010-09-07 Imra America, Inc. Photonic bandgap fibers
US7787729B2 (en) 2005-05-20 2010-08-31 Imra America, Inc. Single mode propagation in fibers and rods with large leakage channels
US10067289B2 (en) 2005-05-20 2018-09-04 Imra America, Inc. Single mode propagation in fibers and rods with large leakage channels
US8542968B2 (en) 2006-09-20 2013-09-24 Imra America, Inc. Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers
US8213758B2 (en) 2006-09-20 2012-07-03 Imra America, Inc. Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers
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
EP1903011A3 (fr) * 2006-09-20 2008-07-09 Imra America, Inc. Terres rares dopées et fibres optiques de large zone dýefficacité pour lasers à fibre et amplicateurs
EP1903011A2 (fr) * 2006-09-20 2008-03-26 Imra America, Inc. Terres rares dopées et fibres optiques de large zone dýefficacité pour lasers à fibre et amplicateurs
US9632243B2 (en) 2007-09-26 2017-04-25 Imra America, Inc. Glass large-core optical fibers
US10353144B2 (en) 2007-09-26 2019-07-16 Imra America, Inc. Glass large-core optical fibers
WO2010040910A1 (fr) * 2008-10-09 2010-04-15 Universite Des Sciences Et Technologies De Lille Monolithes de silice de haute pureté et son procédé de synthèse
EP2174916A1 (fr) 2008-10-09 2010-04-14 Universite Des Sciences Et Technologies De Lille Monolithes de silice de haute pureté et son procédé de synthèse
US8563620B2 (en) 2008-10-09 2013-10-22 Universite Des Sciences Et Technologies De Lille High purity silica monoliths and process for the synthesis thereof
US8498046B2 (en) 2008-12-04 2013-07-30 Imra America, Inc. Highly rare-earth-doped optical fibers for fiber lasers and amplifiers
US8902493B2 (en) 2008-12-04 2014-12-02 Imra America, Inc. Highly rare-earth-doped optical fibers for fiber lasers and amplifiers

Also Published As

Publication number Publication date
FR2333628B1 (fr) 1978-04-14

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