WO1995010868A1 - Amplificateur de fibre optique a haut gain a pompage par laser multi-mode - Google Patents

Amplificateur de fibre optique a haut gain a pompage par laser multi-mode Download PDF

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Publication number
WO1995010868A1
WO1995010868A1 PCT/IT1993/000107 IT9300107W WO9510868A1 WO 1995010868 A1 WO1995010868 A1 WO 1995010868A1 IT 9300107 W IT9300107 W IT 9300107W WO 9510868 A1 WO9510868 A1 WO 9510868A1
Authority
WO
WIPO (PCT)
Prior art keywords
mode
optical fiber
fiber
core
fiber amplifier
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.)
Ceased
Application number
PCT/IT1993/000107
Other languages
English (en)
Inventor
Valentin P. Gapontsev
Igor Samartsev
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.)
Italtel SpA
Ire Polus Co
Original Assignee
Italtel SpA
Italtel Societa Italiana Telecomunicazioni SpA
Ire Polus Co
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 Italtel SpA, Italtel Societa Italiana Telecomunicazioni SpA, Ire Polus Co filed Critical Italtel SpA
Priority to AU58221/94A priority Critical patent/AU5822194A/en
Priority to PCT/IT1993/000107 priority patent/WO1995010868A1/fr
Priority to RU96108614A priority patent/RU2142184C1/ru
Priority to EP94903981A priority patent/EP0723714A1/fr
Publication of WO1995010868A1 publication Critical patent/WO1995010868A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
    • H01S3/0933—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of a semiconductor, e.g. light emitting diode
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094007—Cladding pumping, i.e. pump light propagating in a clad surrounding the active core
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the fibre
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094019—Side pumped fibre, whereby pump light is coupled laterally into the fibre via an optical component like a prism, or a grating, or via V-groove coupling
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094069—Multi-mode pumping
    • 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
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
    • 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
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1618—Solid materials characterised by an active (lasing) ion rare earth ytterbium

Definitions

  • the invention relates to an improved high power optical fiber amplifier pumped by a multi-mode laser source.
  • a fiber optic amplifier for telecommunications is constituted by a single-mode optical fiber which core is doped with rare earths like Erbium. Pump power coupled into the fiber provides gain in the active medium for the information signal propagating along the fiber.
  • US-A- 4 829 529 to Kafka discloses a double core fiber structure for pumping the inner single-mode core doped with a rare earth like Neodymium or Erbium in order to obtain lasing action.
  • This patent shows a double core laser structure, but does not provide for any simultaneous doping with different rare earths, nor suggests that the arrangement could be suitable for producing a fiber optic amplifier and further the coupling of the pump radiation to the fiber is performed through its end faces, using bulk optics.
  • AU-A-10374/92 discloses an optical fiber amplifier comprising an Erbium doped fiber length, a single-mode coupler for coupling to a pump light source, and a length of Yb doped fiber spliced to the output end of the amplifying fiber for absorbing the residual pump light.
  • DE-OS 4 005 867 discloses an optical fiber amplifier comprising a Lanthanid doped length of fiber each end of which is coupled to a pump light source to achieve a high amplification of the incoming signal.
  • EP-A-0 509 577 discloses a two stage optical amplifier with the downstream amplifier comprising a length of active fiber doped with a fluorescent dopant, a coupler for supplying a pump light from a laser diode and a pair of optical insulators.
  • the present invention aims to overcome the above mentioned limitations and drawbacks.
  • a first object of the present invention is to provide a fiber optic amplifier with high gain and high output power.
  • a second object of the present invention is to provide a fiber optic amplifier that effectively suppresses the pumping light outside the lenght of amplifying fiber.
  • a third object of the present invention is to provide a fiber optic amplifier with an uniform gain profile across the amplifying core of the active fiber.
  • a further object of the present invention is to provide a fiber optic amplifier capable to make possible the use of pump sources emitting in a broad wavelength range and not requiring accurate thermal stabilization.
  • an optical fiber amplifier comprising: a lenght of double-clad fiber with: i. a co-doped single-mode core of amplifying material; ii. a multi-mode core surrounding the single-mode core and acting as guide for pump radiation; iii. an outer cladding; - a pump source coupled to said lenght of double clad fiber, characterized in that: said inner core is of an Erbium-Ytterbium doped material; - said pump power source comprises at least a multi-mode diode source supplying multi-mode pumping radiation to said lenght of double-clad fiber, transversally with respect to the optical axis of the fiber.
  • the first object is attained by means of said multi- mode diode source with associated multi-mode/high power pumping radiation;
  • the second and third object are attained by means of said transverse pumping and consequent transverse path of the pumping radiation with respect to the axial path of the information signal propagating along said lenght of optical fiber: thanks to said transverse path, the pumping radiation does not superimpose the information signal and no absorbing means are needed;
  • the fourth object is attained by means of said inner core of an Erbium-Ytterbium doped materials thanks to the broad absorption spectrum of said materials.
  • multi-mode couplers for high efficient coupling of pump multi-mode radiation into the active fiber in order to perform said transverse pumping.
  • at least two multi-mode couplers and two multi-mode diode sources are provided.
  • Fig. 1 is a schematic view of a fiber amplifier according to the invention.
  • Fig. 2 is a cross-sectional side view schematically illustrating the active fiber and the coupler to the pumping source.
  • the amplifier according to the invention comprises a length of optical fiber 1 made by a double concentrical core 2 and 3. With reference in particular to Fig. 1 it is assumed that an optical signal carrying information is propagating along the fiber in the direction shown by arrow S.
  • the inner core 2 is a single-mode core, with size analogous to those of the standard telecommunications fibers, and is doped with both Ytterbium and Erbium i.e. is Yb/Er co-doped.
  • the active material of the inner core 2 exhibits a broad absorption spectrum and is suitable for providing gain at optical communications wavelengths.
  • codoping with Ytterbium and Erbium of the active core allows for a broad pump wavelength range, between 900 nm and 1000 nm, so that within this range pump sources do not require wavelength selection and accurate temperature stabilization.
  • the sorrounding core 3 is a multi-mode core used for pumping by coupling pump radiation from a laser diode 4a through a multi-mode fiber 6a and a multi-mode coupler 5a.
  • An outer cladding 8 surrounds the multi-mode core 3.
  • the pump light from the pump source is injected transversally with respect to the optical axis of said fiber length 1 through the multi-mode couplers - that, according to a preferred embodiment of the invention are non-symmetrical type - and through multiple reflections (as schematically shown for a beam a in Fig. 2), penetrates into the inner core 2 and is absorbed therein without to superimpose to the optical signal to be amplified.
  • the multi-mode coupler can be formed, as an example, by a length of multi-mode fiber and a length of double core fiber. According to a preferred embodiment of the invention the multi-mode coupler is formed directly on the active fiber twisting, heating an subsequently pulling the two fibers.
  • an additional laser diode 4b is connected to the active fiber 1 through a multi-mode fiber 6b and a second multi-mode coupler 5b for increasing the pump power and in order to achieve a more uniform power distribution along the amplifying fiber which in turn results in improved amplifying characteristics.
  • Isolators INS1 and INS2 can be further provided along the fiber 1. Thanks to the fact that the pump radiation does not couple into the amplifying core 2 along the signal direction, no output filter is needed.
  • the gain profile is uniform across the active core, which thus can be made similar in dimensions to standard single-mode telecommunications fibers.
  • the outer cladding provides optical confinement for pump radiation.
  • the use of multi- mode fibers allows for much higher pump powers and the double core pumping scheme together with said transverse pumping makes possible placing several sources along a single active fiber; therefore high gain and output power are achievable.
  • the (each) pump source is a multi-mode laser diode and the pumping radiation is a coherent radiation.
  • the pumping radiation can be an incoherent radiation, such as that generated, e.g. by a superfluorescent diode.
  • the single-mode amplifying fiber 1 is preferably made by Erbium-Ytterbium doped glass.
  • the diameters of the multi-mode pump core and the single-mode amplifying core are in a ratio of about 10:1 and the length of the optical fiber 1 is between 2 and 20m.
  • the best mode for carrying out the invention is the one shown in fig. 2 and comprising two multi-mode fiber optic couplers 6a and 6b in order to obtain high output power and, thanks to the transverse pumping the pump radiation is not superimposed to the optical signal to be amplified, and consequently no filter is required at the output of the amplifier to eliminate residual pump radiation.
  • the high power optical fiber amplifier is applicable in telecommunication transmission systems and in particular in long haul transmission lines and in distribution networks.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

Amplificateur de fibre optique fait d'une fibre (1) à deux âmes concentriques (2, 3) dont l'intérieure (2) constitue le matériau amplificateur et l'extérieure (3) sert au pompage. Le rayonnement de pompage est fourni par des sources multi-mode (4) et couplé, transversalement à l'axe optique de la fibre (1), à l'âme extérieure (3) par l'intermédiaire de fibres (6) et de coupleurs optiques (5) multi-mode. Le rayonnement de pompage se propage à travers l'âme extérieure (3) et se couple à l'âme amplificatrice (2) en pompant le matériau amplificateur dont la composition est choisie pour permettre d'effectuer le pompage dans une large gamme de longueurs d'onde. On peut utiliser des sources de pompage cohérentes ou non.
PCT/IT1993/000107 1993-10-13 1993-10-13 Amplificateur de fibre optique a haut gain a pompage par laser multi-mode Ceased WO1995010868A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU58221/94A AU5822194A (en) 1993-10-13 1993-10-13 A high power optical fiber amplifier pumped by a multi-mode laser source
PCT/IT1993/000107 WO1995010868A1 (fr) 1993-10-13 1993-10-13 Amplificateur de fibre optique a haut gain a pompage par laser multi-mode
RU96108614A RU2142184C1 (ru) 1993-10-13 1993-10-13 Оптический волоконный усилитель высокой мощности с накачкой многомодовым лазерным источником
EP94903981A EP0723714A1 (fr) 1993-10-13 1993-10-13 Amplificateur de fibre optique a haut gain a pompage par laser multi-mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT1993/000107 WO1995010868A1 (fr) 1993-10-13 1993-10-13 Amplificateur de fibre optique a haut gain a pompage par laser multi-mode

Publications (1)

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WO1995010868A1 true WO1995010868A1 (fr) 1995-04-20

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PCT/IT1993/000107 Ceased WO1995010868A1 (fr) 1993-10-13 1993-10-13 Amplificateur de fibre optique a haut gain a pompage par laser multi-mode

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EP (1) EP0723714A1 (fr)
AU (1) AU5822194A (fr)
RU (1) RU2142184C1 (fr)
WO (1) WO1995010868A1 (fr)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899837A1 (fr) * 1997-08-23 1999-03-03 PIRELLI CAVI E SISTEMI S.p.A. Coupleurs inégaux pour pompage multimode des amplificateurs optiques
US5920582A (en) * 1996-12-19 1999-07-06 Northern Telecom Limited Cladding mode pumped amplifier
EP0989638A1 (fr) * 1998-09-22 2000-03-29 PIRELLI CAVI E SISTEMI S.p.A. Dispositif pour le pompage d'un amplificateur optique à fibre
WO2000030223A1 (fr) * 1998-11-13 2000-05-25 Alliedsignal Inc. Source et amplificateurs de grande puissance pour fibre optique large bande a pompage dans la gaine
FR2789813A1 (fr) * 1999-02-15 2000-08-18 Cit Alcatel Amplificateur optique
WO2000049686A1 (fr) * 1999-02-19 2000-08-24 Alcatel Amplificateur optique a fibre dopee pour la bande a 1600 nm
US6181466B1 (en) 1997-08-23 2001-01-30 Pirelle Cavi E Sistemi S.P.A. Unequal couplers for multimode pumping optical amplifiers
FR2799054A1 (fr) * 1999-09-24 2001-03-30 Cit Alcatel Amplificateur optique a fibre optique
DE19953871A1 (de) * 1999-11-09 2001-05-17 Siemens Ag Anordnung zum Pumpen eines Multi-Clad-Faserverstärkers
DE19961515A1 (de) * 1999-12-20 2001-06-28 Siemens Ag Anordnung zur Übertragung von Pumplicht hoher Leistung
DE10009379A1 (de) * 2000-02-29 2001-09-13 Schneider Laser Technologies Faseroptischer Verstärker
US6327279B1 (en) 1998-07-23 2001-12-04 Robert Bosch Gmbh Device for pump light supply for laser active and amplifying fibers
US6359728B1 (en) 1998-09-22 2002-03-19 Pirelli Cavi E Sistemi S.P.A. Pump device for pumping an active fiber of an optical amplifier and corresponding optical amplifier
EP1241744A1 (fr) * 2001-03-12 2002-09-18 Alcatel Amplificateur à fibre optique à double gainage
US6477295B1 (en) * 1997-01-16 2002-11-05 Jds Uniphase Corporation Pump coupling of double clad fibers
US6525760B1 (en) * 1997-11-10 2003-02-25 Fujifilm Electronic Imaging Limited Method and apparatus for exposing an image recording medium
US6556346B1 (en) 1998-09-22 2003-04-29 Corning O.T.I.Spa Optical amplifying unit and optical transmission system
US6603905B1 (en) 2000-03-03 2003-08-05 Hrl Laboratories, Llc Launch port for pumping fiber lasers and amplifiers
US6603598B1 (en) 1999-09-29 2003-08-05 Corning O.T.I. Inc. Optical amplifying unit and optical transmission system
US6795611B2 (en) 2003-01-29 2004-09-21 Institut National D'optique Light coupling between a light source and an optical waveguide
US6941053B2 (en) 1999-12-24 2005-09-06 Institut National D'optique Triple-clad rare-earth doped optical fiber and applications
US7068900B2 (en) 1999-12-24 2006-06-27 Croteau Andre Multi-clad doped optical fiber
US7161966B2 (en) * 2003-01-24 2007-01-09 Trumpf, Inc. Side-pumped fiber laser
CN1330117C (zh) * 2002-07-12 2007-08-01 俄罗斯A.M.普洛科霍洛娃普通物理研究所光纤科学中心 保护光纤线路免受激光辐射损坏的装置
DE102007036701A1 (de) 2007-08-01 2009-02-05 Laserinstitut Mittelsachsen E.V. Verfahren zur Herstellung eines Faserlasers und Faserlaser
US7542488B2 (en) 2003-01-24 2009-06-02 Trumpf, Inc. Fiber laser
EP1873874A3 (fr) * 1999-04-30 2010-07-21 SPI Lasers UK Limited Agencement de fibre optique
DE19619983B4 (de) * 1995-05-19 2011-02-24 IMRA America, Inc., Ann Arbor Hochleistungs-Lichtwellenleiter-Verstärkersystem mit zeitproportionaler Frequenzmodulation auf Grundlage von mit seltenen Erden dotierten Mantel-Pumplicht-Lichtwellenleitern
WO2012047218A1 (fr) * 2010-10-07 2012-04-12 Ipg Photonics Corporation Lasers et amplificateurs à fibre dopée au néodyme de forte puissance
WO2012109400A1 (fr) * 2011-02-10 2012-08-16 Soreq Nuclear Research Center Guide d'onde laser planaire à puissance élevée
US8873593B2 (en) 1998-11-25 2014-10-28 Imra America, Inc. Mode-locked multi-mode fiber laser pulse source
EP3190388A1 (fr) * 2009-07-23 2017-07-12 Fotech Solutions Limited Capteurs à fibre optique distribués

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RU2170995C1 (ru) * 2000-08-31 2001-07-20 Общество с ограниченной ответственностью "Корвет - Лайтс" Светодиодное устройство
US7130111B2 (en) * 2001-12-13 2006-10-31 Intel Corporation Optical amplifier with transverse pump
CN110036542B (zh) * 2016-12-01 2021-09-28 Ipg光子公司 利用单模或低阶模光纤激光器基于超低量子缺陷泵浦方案的大功率稀土掺杂晶体放大器

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EP0320990A2 (fr) * 1987-12-17 1989-06-21 Polaroid Corporation Lasers et amplificateurs à fibre optique
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Title
J.D.MINELLY ET AL.: "Diode-array pumping of Er3+/Yb3+ co-doped fiber lasers and amplifiers", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 5, no. 3, March 1993 (1993-03-01), NEW YORK US, pages 301 - 303, XP000362931 *

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19619983B4 (de) * 1995-05-19 2011-02-24 IMRA America, Inc., Ann Arbor Hochleistungs-Lichtwellenleiter-Verstärkersystem mit zeitproportionaler Frequenzmodulation auf Grundlage von mit seltenen Erden dotierten Mantel-Pumplicht-Lichtwellenleitern
US5920582A (en) * 1996-12-19 1999-07-06 Northern Telecom Limited Cladding mode pumped amplifier
US6477295B1 (en) * 1997-01-16 2002-11-05 Jds Uniphase Corporation Pump coupling of double clad fibers
US6263003B1 (en) 1997-02-14 2001-07-17 Alliedsignal Inc. High-power cladding-pumped broadband fiber source and amplifier
US6181466B1 (en) 1997-08-23 2001-01-30 Pirelle Cavi E Sistemi S.P.A. Unequal couplers for multimode pumping optical amplifiers
EP0899837A1 (fr) * 1997-08-23 1999-03-03 PIRELLI CAVI E SISTEMI S.p.A. Coupleurs inégaux pour pompage multimode des amplificateurs optiques
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AU5822194A (en) 1995-05-04
EP0723714A1 (fr) 1996-07-31

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