WO2013121371A9 - Système hautement efficace basé sur amplificateur à fibre co-dopée erbium-ytterbium - Google Patents

Système hautement efficace basé sur amplificateur à fibre co-dopée erbium-ytterbium Download PDF

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Publication number
WO2013121371A9
WO2013121371A9 PCT/IB2013/051196 IB2013051196W WO2013121371A9 WO 2013121371 A9 WO2013121371 A9 WO 2013121371A9 IB 2013051196 W IB2013051196 W IB 2013051196W WO 2013121371 A9 WO2013121371 A9 WO 2013121371A9
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Prior art keywords
fibre
fibre optic
signal
active
coupler
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PCT/IB2013/051196
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WO2013121371A1 (fr
Inventor
Grzegorz SOBOŃ
Paweł KACZMAREK
Dorota ŚLIWIŃSKA
Karol KRZEMPEK
Arkadiusz ANTOŃCZAK
Jarosław SOTOR
Adam WĄŻ
Grzegorz DUDZIK
Krzysztof ABRAMSKI
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WROCŁAWSKIE CENTRUM BADAŃ EIT+ Sp z o.o.
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Publication of WO2013121371A1 publication Critical patent/WO2013121371A1/fr
Publication of WO2013121371A9 publication Critical patent/WO2013121371A9/fr

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    • 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
    • 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
    • H01S3/094015—Processes 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
    • 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
    • H01S3/094023—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with ASE light recycling, with reinjection of the ASE light back into the fiber, e.g. by reflectors or circulators
    • 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
    • H01S3/09403—Cross-pumping, e.g. Förster process involving intermediate medium for excitation transfer
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
    • 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
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0064—Anti-reflection devices, e.g. optical isolaters
    • 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
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0078—Frequency filtering
    • 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
    • H01S3/14—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 present invention refers to the fibre optic amplifier system based on the fibre doped with erbium and ytterbium ions with controlled lasing at a wavelength range of 1030 - 1060 nm, suitable for use in optical systems and devices as an amplifier of a continuous or a pulse laser radiation from the range of the third telecommunication window.
  • fibre of a length of 1 .5 m in the first stage and 7 m in the second stage it is possible to achieve the amplification of 27 dB at a wavelength of 1550 nm by pumping with a power of 4.6 watts.
  • the fibre optic amplifier system based on the fibre optic doped with erbium and ytterbium is known from U.S. Patent No. US6556346.
  • This system consists of an optical input, which is fed with a signal from a bandwidth of the third telecommunication window, a prel-amplifier EDFA, an optically coupled isolator and the fibre optic amplifier system based on the erbium-ytterbium fibre.
  • the fibre optic is pumped by at least one semiconductor laser. These lasers are coupled with the active fibre optic through WDM couplers. At the output of the amplifier the optically coupled isolator is placed that protects the amplifier against a reflected signal.
  • the Polish patent application No. PL395086 presents the fibre amplifier consisting of an isolator connected via the preliminary fibre optic amplifier, the fibre optic optically coupled isolator, the first multiplexer, the active fibre optic with the double-cladding doped with erbium and ytterbium ions, the fibre optic coupler, the second multiplexer and another fibre optic optically coupled isolator with the signal output of the fibre optic amplifier system.
  • the fibre optic coupler is connected to at least one multi-mode pumping laser.
  • the first multiplexer is connected via the monitoring coupler equipped with two monitoring outputs with the second multiplexer, wherein preferably between the first multiplexer and the monitoring coupler the fibre optic optically coupled isolator is incorporated.
  • the previous systems of the fibre optic amplifiers have forced circulation of noise, which are emitted by the excited ytterbium ions in the erbium-ytterbium fibre.
  • the lasing is observed at a wavelength range of 1060-1064 nm.
  • the lasing so excited has no beneficial effect on the system efficiency.
  • a spontaneous emission noise of the ytterbium ions is a major factor limiting the output power and deteriorating the efficiency of the erbium-ytterbium amplifiers.
  • a first subject of the present invention is the fibre optic amplifier system based on the fibre doped with rare earth ions comprising the pumping laser, the coupler and the active fibre optic doped with rare earth ions, characterised in that the beam of light from an external signalling laser is directed from the signalling input via fibre optics to the first multiplexer of the active fibre optic doped with rare earth ions, preferably the erbium and ytterbium ions, the second multiplexer to the signalling output, wherein prior to the first multiplexer an optical filter or an optical circulator with the optical filter is connected in parallel, preferably an element forcing a running direction that is coupled to the second multiplexer, wherein the optical filter or the optical circulator with the optical filter is preceded by the output coupler.
  • the system according to the present invention is characterised in that at the input and / or the output of the optically coupled isolators are located, preferably in the range 1530 - 1590 nm. More preferably, the system according to the invention is characterised in that the active fibre optic is a fibre with single jacket (single-clad), pumped counter-directionally to propagation of the input signal, with the pump being introduced to the core through the coupler with wavelength division. In a further preferred embodiment of the present invention the active fibre optic is the fibre with single jacket (single-clad), pumped co-directionally to the propagation of the input signal, with the pump being introduced to the core through the coupler with the wavelength division.
  • the system according to the present invention is characterised in that the active fibre optic is the fibre with single jacket (single-clad), pumped bi-directionally, i.e. backwardly and co- directionally to the propagation of the input signal, with the pump being introduced into the core by means of two couplers with the wavelength division. More preferably, the system according to the invention is characterised in that the active fibre optic is the fibre with double jacket (double-clad), pumped counter-directionally to propagation of the input signal, with the pump being introduced into the jacket by means of the coupler of a combiner type.
  • the system is characterised in that the active fibre optic is the fibre with double jacket (double-clad), pumped co-directionally to the propagation of the input signal with the pump being introduced into the jacket by means of the coupler of the combiner type.
  • the system according to the invention is characterised in that the active fibre optic is the fibre with double jacket (double-clad), pumped bi-directionally, i.e. simultaneously backwardly and concurrently to the propagation of the input signal, with the pumps introduced into the jacket through the couplers of the combiner type.
  • the system according to the present invention is characterised in that the active fibre optic is the fibre optic with single jacket (single-clad), pumped counter-directionally, co-directionally or bi-directionally, and all fibres used in the system are the fibres maintaining the state of light polarization (called as Polarization Maintaining PM).
  • the active fibre optic is the fibre with single jacket (single-clad), pumped counter-directionally, co- directionally or bi-directionally, and the system uses standard fibres - not maintaining the state of the polarization of the light.
  • the system according to the invention is characterised in that the fibre amplifier has a tunable filter in an additional ring resonator.
  • the system according to the present invention is characterised in that the fibre amplifier has a fixed filter in the additional ring resonator.
  • the system is characterised in that the fibre amplifier in the additional ring resonator has a filter in the form of fibre Bragg grating, preferably tunable or fixed, located on one of the ports of the optical circulator.
  • the method according to the invention is characterised in that it has the ring resonator for the signal from the band of 1030 - 1060 nm with forced circulation of the signal in the direction concurrent to the direction of pumping, preferably by placing the optical circulator or the fibre optic isolator positioned in the desired direction in the resonator.
  • Another object of the present invention is a method for increasing the output power and efficiency of the fibre optic amplifier based on the fibre doped with rare earth ions, preferably erbium and ytterbium ions and characterised in that it comprises a positive feedback loop pararelly to the amplifier, containing an optical filter or an optical circulator with the optical filter or preferably the element forcing the running direction, preferably the optically coupled isolator, wherein preferably the optical filter or the optical circulator with the optical filter is preceded by the output coupler.
  • the method according to the invention is characterised in that the construction of the amplifier is the same as in any embodiment of the first object of the invention.
  • the structure of the optical filter is defined in any embodiment of the first object of the invention.
  • the method according to the invention is characterised in that the ring resonator for the signal from the band of 1030 - 1060 nm with a positioned filter, preferably with the output coupler for the signal of 1030 - 1060 nm is attached.
  • the main and most important advantage of the proposed solution is its simplicity, low cost and ease of use and ability to use in any existing fibre optic amplifier that use erbium-ytterbium fibre as an active medium.
  • This method does not require any additional external laser sources operating at a wavelength from the amplification band of ytterbium in contrast to the methods known in the art.
  • the signal from the ytterbium band is self-generated by the active fibre, as a result of imperfections in the process of the energy transfer between ytterbium and erbium ions (and as a result of the energy back-transfer).
  • the energy that was not transferred from the ytterbium ions to erbium ions is irretrievably lost - radiated in the form of amplified spontaneous emission noise in the wavelength range of 1000 - 1 100 nm.
  • the present invention proposes a quasi-"recycling" of this energy through its re-use.
  • the noise is separated from the signal by WDM couplers, and transformed into a stable lasing (through enforcement of the circulation in the resonator), and by using a spectral filter, the signal circulation is forced at a wavelength of ytterbium emission band, but shorter than the maximum of emission (i.e., less than 1064 nm).
  • This signal is re-absorbed by the ytterbium ions, and the energy is transferred to the erbium again. Thus, a part of the lost energy is recovered and reused, increasing the efficiency and amplification of the system.
  • the method also does not require any intervention in the active fibre, does not require the use of special dopants or changes in the structure of the fibre during its production.
  • the use of the resonator increases the efficiency and gain, and thus - the output power of the fibre optic amplifier.
  • the spontaneous emission noise of ytterbium ions is a major factor limiting the output power and decreasing the efficiency of the erbium-ytterbium amplifiers.
  • This phenomenon is based on the re-absorption of the radiation from the 1030 - 1060 nm band by the dopant ions in the fibre optic and conversion of this energy into the signal from the band 1530 - 1590 nm.
  • the re- absorption effect is the strongest for the shorter wavelengths of the ytterbium gain bandwidth (1030 - 1050 nm); hence it is preferable to force the circulation at these wavelengths in the resonator, by using an appropriate filter.
  • the present invention protects the fibre optic amplifier against the spontaneous excitation of the lasing at the wavelengths of the ytterbium amplification band.
  • loop - ring resonator for the signals from the range of 1030 - 1060 nm allows for the conversion of the noise into the controlled well-defined lasing.
  • the presence of the controlled lasing eliminates the emission of noise, and completely eliminates the possibility of the occurrence of a random lasing.
  • Figure 1 shows the optical system of the present invention with the optical isolators IO
  • Figure 2 illustrates the system without the IO in the feedback loop
  • Figure 3 illustrates the system without the output coupler in the feedback loop
  • a fibre optic Bragg grating as a filter (FO) that is connected to the port 2 of the optical circulator (C)
  • Figure 4 shows the system with the coupler in the feedback loop and the fibre optic Bragg grating as the filter (FO) connected to the port 2 of the optical circulator (C)
  • Figure 5 shows the circuit without the optical isolators 10 in the main signal path of the amplifier.
  • the fibre optic amplifier system based on the fibre doped with erbium and ytterbium ions with the forced lasing comprises the input optical isolator I0 that is connected via first WDM1 multiplexer, the active double-cladding fibre F doped with erbium and ytterbium ions, the coupler introducing the pumping radiation SP, the second WDM2 multiplexer and another fibre optic isolator I0 with the signal output of the fibre optic amplifier system.
  • the fibre optic coupler SP is connected to at least one pumping laser LP, while the first WDM1 multiplexer is connected via the output coupler SW, the optical circulator C to the second coupler WDM2.
  • One of the ports of the circulator C is connected to the reflective optical filter FO, forcing the transmission of the specific wavelength in the resonator.
  • the couplers WDM1 and WDM2 separating the amplified signal (from the band from 1530 to 1590 nm) from the spontaneous emission noise of the ytterbium ions allows to create a positive feedback loop (a ring resonator) for the spontaneous emission noise from the ytterbium ions.
  • the optical filter FO is provided, which forces the signal to circulate at the specific wavelength from the range of 1030 - 1060 nm.
  • the insertion of the optical filter allows for shifting the signal wavelength toward the shorter wavelengths from the emission spectrum of ytterbium, which has a positive effect on the amplification of the useful signal from the band of 1530 - 1590 nm as a result of the re-absorption phenomena.
  • the SW coupler allows for outout-coupling of a part of the signal power from the resonator.
  • a three-port circulator C placed in the loop allows for forcing the direction of the signal circulation in the resonator (co-directionally to the propagation of the pump), and the connection of the optical filter FO.
  • the output power and efficiency was measured, using a fiber Bragg gratings FO as a filter, with a reflection wavelength of 1040 nm.
  • the amplifier was pumped with two semiconductor lasers operating at 975 nm wavelength and the total power of 18.5 W.
  • the beam at a wavelength of 1550 nm with 280 mW was used.
  • the power of 4.65 W was obtained, which means the optical efficiency of about 25% and amplification of 12.2 dB.
  • Example 2 The system as in Example 1 , except that the feedback loop contained only an optical isolator IO forcing the direction of the signal circulation in the loop co-directionally to the pumping radiation. There was no fiber optic circulator C and the optical filter FO in the feedback loop. Thus, the wavelength of the lasing in the resonator this time is random and there is no control over its spectral parameters.
  • the amplifier was pumped with two semiconductor lasers operating at 975 nm wavelength and the total power of 18.5 W. At the output of ' the amplifier the power of 3.67 W was obtained, which means the optical efficiency of about 20% and the amplification of 11.17 dB.
  • the system underlying the present invention allows to improve the efficiency of the amplifier and to increase the output power in the band of 1530 -1590 nm by at least 20 %, depending on the wavelength induced in the resonator.
  • the optical filter forces the circulation of the signal of a precisely determined wavelength form the emission band of ytterbium, for example, 1040 nm. The signal of this wavelength is readily absorbed by the ytterbium ions, and the recovered energy is transferred to the erbium as a result of interionic interactions in the fibre optic.
  • the measurements show that the amplification can be increased by at least 1 dB (i.e., not less than 5%).
  • the power differences between the three systems: with the filter FO at a wavelength of 1040 nm, without the filter in the loop, and without the feedback loop are shown in the figure 6.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Lasers (AREA)

Abstract

La présente invention concerne un système d'amplificateur à fibre optique basé sur une fibre dopée avec des ions de terres rares comprenant un laser de pompage, un coupleur et les fibres optiques actives dopées avec des ions de terres rares, caractérisé par le fait que la lumière de faisceau provenant d'un laser de signal extérieur (LS) est dirigée depuis l'entrée de signal ayant les fibres optiques au premier multiplexeur (WDM1), les fibres opriques actives dopées avec des ions de terres rares, de préférence erbium et ytterbium, le second multiplexeur (WDM2) pour la sortie de signal, avant le premier multiplexeur (WDM1), le filtre optique (FO) ou le circulateur (C) ayant le filtre optique (FO) étant relié en parallèle, de préférence l'isolateur (IO) forçant la direction de propagation de lumière, couplé au multiplexeur WDM2, de préférence devant le FO ou le circulateur (C) ayant le filtre optique (C) est agencé le coupleur de sortie (SW).
PCT/IB2013/051196 2012-02-15 2013-02-14 Système hautement efficace basé sur amplificateur à fibre co-dopée erbium-ytterbium WO2013121371A1 (fr)

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PL398119A PL220700B1 (pl) 2012-02-15 2012-02-15 Układ wzmacniacza światłowodowego opartego na włóknie domieszkowanym jonami erbu i iterbu o zwiększonej sprawności
PLPL398119 2012-02-15

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WO2013121371A9 true WO2013121371A9 (fr) 2013-10-24

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CN112490832B (zh) * 2020-11-24 2022-05-20 内蒙古大学 一种铒镱共掺光纤放大器的工作方法

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US6556346B1 (en) 1998-09-22 2003-04-29 Corning O.T.I.Spa Optical amplifying unit and optical transmission system
KR100350482B1 (ko) * 1999-07-22 2002-08-28 삼성전자 주식회사 비동기전송모드 무선접속망의 고장관리방법
US7848014B2 (en) 2008-04-09 2010-12-07 Cisco Technology, Inc. Erbium and Erbium/Ytterbium cladding pumped hybrid optical amplifier
PL218126B1 (pl) 2011-06-01 2014-10-31 Politechnika Wroclawska Układ wzmacniacza światłowodowego opartego na włóknie domieszkowanym jonami erbu i iterbu

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