WO2001050639A3 - Method for transmitting signals using optical fibres and fibre therefor - Google Patents

Method for transmitting signals using optical fibres and fibre therefor Download PDF

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Publication number
WO2001050639A3
WO2001050639A3 PCT/FR2000/003707 FR0003707W WO0150639A3 WO 2001050639 A3 WO2001050639 A3 WO 2001050639A3 FR 0003707 W FR0003707 W FR 0003707W WO 0150639 A3 WO0150639 A3 WO 0150639A3
Authority
WO
WIPO (PCT)
Prior art keywords
fibre
constituted
layer
therefor
fluxes
Prior art date
Application number
PCT/FR2000/003707
Other languages
French (fr)
Other versions
WO2001050639A2 (en
Inventor
Laurent Gasca
Christelle Leclere
Pierre Sansonetti
Jean-Pierre Blondel
Sebastien Fevrier
Jacques Marcou
Dominique Bayart
Dominique Pagnoux
Philippe Roy
Original Assignee
Cit Alcatel
Laurent Gasca
Christelle Leclere
Pierre Sansonetti
Blondel Jean Pierre
Sebastien Fevrier
Jacques Marcou
Dominique Bayart
Dominique Pagnoux
Philippe Roy
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 Cit Alcatel, Laurent Gasca, Christelle Leclere, Pierre Sansonetti, Blondel Jean Pierre, Sebastien Fevrier, Jacques Marcou, Dominique Bayart, Dominique Pagnoux, Philippe Roy filed Critical Cit Alcatel
Publication of WO2001050639A2 publication Critical patent/WO2001050639A2/en
Publication of WO2001050639A3 publication Critical patent/WO2001050639A3/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
    • G02B6/03616—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 - + -
    • 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
    • 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
    • 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
    • H01S3/06729—Peculiar transverse fibre profile
    • 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
    • H01S3/06754—Fibre amplifiers

Abstract

The invention concerns a method wherein respective gain factors of successive coaxial layers of an optical fibre are adjusted as to achieve the desired power distribution among the various light fluxes which are propagated in said fibre. Said fluxes can be constituted by signal carrier waves whereof the levels should be balanced in a wavelength multiplexed system. They can also be constituted by a pump wave in an amplification shifted system and by a Raman wave generated by said pump wave and which must be eliminated. The gain factor of a layer is positive, negative or null depending on whether said layer amplifies, absorbs or simply transmits said waves. One flat gain amplifying fibre can in particular comprise a high index amplifying core (2), a low index internal cladding (3), a high index absorbing ring (4), and a low index external cladding (5). The invention is applicable in particular to transoceanic transmissions.
PCT/FR2000/003707 1999-12-30 2000-12-28 Method for transmitting signals using optical fibres and fibre therefor WO2001050639A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9916719 1999-12-30
FR99/16719 1999-12-30

Publications (2)

Publication Number Publication Date
WO2001050639A2 WO2001050639A2 (en) 2001-07-12
WO2001050639A3 true WO2001050639A3 (en) 2002-05-23

Family

ID=9554029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2000/003707 WO2001050639A2 (en) 1999-12-30 2000-12-28 Method for transmitting signals using optical fibres and fibre therefor

Country Status (1)

Country Link
WO (1) WO2001050639A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1488482A4 (en) * 2002-03-08 2005-11-23 Lightwave Electronics Amplifiers and light sources employing s-band erbium-doped fiber and l-band thulium-doped fiber with distributed suppression of amplified spontaneous emission (ase)
FR2973957B1 (en) * 2011-04-05 2014-03-28 Centre Nat Rech Scient OPTICAL FIBER LASER OSCILLATOR.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5892615A (en) * 1997-03-17 1999-04-06 Sdl, Inc. Output power enhancement in optical fiber lasers
EP0910141A1 (en) * 1997-10-17 1999-04-21 Fujitsu Limited Optically amplifying fiber and amplifier with such a fiber
EP0957545A1 (en) * 1998-05-14 1999-11-17 Alcatel Fibre optique pour amplificateur optique a gain plat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5892615A (en) * 1997-03-17 1999-04-06 Sdl, Inc. Output power enhancement in optical fiber lasers
EP0910141A1 (en) * 1997-10-17 1999-04-21 Fujitsu Limited Optically amplifying fiber and amplifier with such a fiber
EP0957545A1 (en) * 1998-05-14 1999-11-17 Alcatel Fibre optique pour amplificateur optique a gain plat

Also Published As

Publication number Publication date
WO2001050639A2 (en) 2001-07-12

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