公开(公告)号：US20030184848A1

公开(公告)日：2003-10-02

申请号：US10359150

申请日：2003-02-06

Applicant: Alcatel

Inventor： Dominique Bayart ,  Florence Leplingard

IPC: H01S003/00

CPC classification number: H01S3/302 ,  H01S3/0675 ,  H01S3/08086 ,  H01S3/1055

Abstract: The present invention relates to a cascaded multi-wavelength Raman fiber amplification stage with a length of optical fiber having input (15) and output (16) sections, pump laser means (11) for introducing pump radiation of wavelength nullp into said length of optical fiber (13), at least two pairs of reflector means (151,161; . . . ;159, 169), spaced-apart the length of optical fiber (13), at least one of said pairs of reflector means has an output reflector mean (161, 162, 163), with a reflectivity lower than 100% and a feed back loop with: a tap coupler (20) for deriving a low percentage of the optical output signal as a optical monitor signal (28), at least one wavelength selecting element (21, 25,26, 27) for the optical monitor signal (28), at least one opto-electrical converter (23, 231,232,233) generating a electrical signal and a control circuit (27) for the electrical signal connected to adjustment means (181, 182, 183) adjusting the reflectivity of the output reflector means (161, 162, 163).

Abstract translation: 本发明涉及具有输入（15）和输出（16）部分的具有一定长度的光纤的级联多波长拉曼光纤放大级，泵浦激光装置（11）用于将波长兰普的泵浦辐射引入所述光学长度 光纤（13），至少两对反射器装置（151,161; ...，159,169），其间隔开所述长度的光纤（13），所述反射器对中的至少一个具有输出反射器平均值 （161,162,163），具有低于100％的反射率和反馈回路，具有：用于导出低百分比的光输出信号作为光监视信号的抽头耦合器（20），至少一个 用于所述光学监视信号（28）的波长选择元件（21,25,26,27），至少一个产生电信号的光电转换器（23,231,232,233）和用于所述电信号的控制电路（27），所述电信号连接到 调整所述输出反射器装置的反射率的调节装置（181,182,183） （161,162,163）。

公开(公告)号：US20030138000A1

公开(公告)日：2003-07-24

申请号：US10339341

申请日：2003-01-10

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Carlos De Barros ,  Thierry Lopez ,  Xavier Normandin

IPC: H01S003/30 ,  H01S003/10 ,  H01S003/08

CPC classification number: H01S3/0675 ,  H01S3/08086 ,  H01S3/1055 ,  H01S3/302

Abstract: The present invention relates to a cascaded multi-wavelength Raman fiber laser adapted for emitting radiation of at least one wavelength nulls1, with a length of optical fiber (13) having input (15) and output (16) sections, means (11) for introducing pump radiation of wavelength nullp into said length of optical fiber (13), at least one pair of spaced-apart reflector means (151,161; . . . ;159, 169), defining an optical cavity belonging to said optical fiber, each of said reflector means having a center wavelength, the reflector means of each pair being located respectively at said input section (15) and said output section (16) of said optical fiber and at least one of said pairs of reflector means having its reflector means located at said output section (16), called output reflector means (161, 162, 163), having a lower reflectivity at said center wavelength than the corresponding reflector means of the same pair (151, 152, 153) located at said input section (15), so as to emit radiation of said output wavelengths out of said optical fiber (13).

Abstract translation: 本发明涉及一种级联的多波长拉曼光纤激光器，其适用于发射具有输入（15）和输出（16）部分的具有一定长度的光纤（13）的至少一个波长兰姆1的辐射，装置（11）用于 将波长lambdp的泵浦辐射引入所述长度的光纤（13）中，限定属于所述光纤的至少一对间隔开的反射器装置（151,161; ... 159,169），每个反射器装置 所述反射器装置具有中心波长，每对的反射器装置分别位于所述光纤的所述输入部分（15）和所述输出部分（16）处，并且所述反射器装置对中的至少一个具有其反射器装置 在所述输出部分（16）处，称为输出反射器装置（161,162,163），其在所述中心波长处的反射率低于位于所述输入部分处的相同对（151,152,153）的相应反射器装置 15），以便发射r 所述光纤（13）中的所述输出波长的附着。

公开(公告)号：US20020085269A1

公开(公告)日：2002-07-04

申请号：US10022895

申请日：2001-12-20

Applicant: ALCATEL

Inventor： Fabien Roy ,  Dominique Bayart

IPC: H01S003/00 ,  H04B010/12

CPC classification number: H01S3/094003 ,  H01S3/063 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094092 ,  H01S3/094096 ,  H01S3/1616 ,  H01S2303/00

Abstract: The invention is related to a waveguide amplifier with an input for optical signals and an output for optical signals with at least one piece of amplifying waveguide with at least one mean for coupling pump laser modules to the amplifying waveguide which contains Tm ions. The invention is also related to a pumping scheme for waveguide amplifier feeding two different wavelengths in to the waveguide.

Abstract translation: 本发明涉及具有用于光信号的输入的波导放大器和具有至少一个放大波导的光信号的输出，至少一个平均值用于将泵激光模块耦合到包含Tm离子的放大波导。 本发明还涉及向波导中馈送两个不同波长的波导放大器的泵浦方案。

公开(公告)号：US20040207907A1

公开(公告)日：2004-10-21

申请号：US10786079

申请日：2004-02-26

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Dominique Annie Mongardien

IPC: H01S003/00

CPC classification number: H04B10/2916

Abstract: An optical signal amplifier comprises a Semiconductor Optical Amplifier SOA used as semiconductor Amplified Spontaneous Emission ASE source. This SOA produces optical pumping seed which has to be amplified to get a large pump power. With such large pump power, it will be possible to counteract the loss in a fiber link of optical signals transmitted through it by applying said amplified pumping seed as Raman amplification on the optical signals. The invention further relates to a method for amplifying an optical signal comprising the combination of a semiconductor ASE source together with a high-power pump source. Latter will be used to amplify optical pumping seed to be produced by the semi-conductor ASE source. Accordingly, the obtained amplified pumping seed will be used to act as a Raman amplification of optical signals.

Abstract translation: 光信号放大器包括用作半导体放大自发发射ASE源的半导体光放大器SOA。 该SOA产生必须被放大以获得大的泵功率的光泵送种子。 利用这种大的泵浦功率，通过将所述放大的泵浦种子作为拉曼放大应用于光信号，可以抵消在其中传输的光信号的光纤链路中的损耗。 本发明还涉及一种用于放大包括半导体ASE源与大功率泵浦源的组合的光信号的方法。 后期将用于放大由半导体ASE源产生的光泵浦种子。 因此，所获得的放大泵送种子将用作光信号的拉曼放大。

公开(公告)号：US20020131741A1

公开(公告)日：2002-09-19

申请号：US10098127

申请日：2002-03-15

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Laurent Berthelot

IPC: G02B006/02 ,  G02B006/20

CPC classification number: G02B6/02357 ,  B82Y20/00 ,  G02B6/02019 ,  G02B6/02266 ,  G02B6/02361 ,  H01S3/06708 ,  H01S3/06716

Abstract: An optical fiber with a large effective surface area has holes at points in at least two layers concentric with the fiber of points of a regular matrix. The holes in one layer have the same dimensions and occupy all the available points in the layer. In at least two layers the holes have different dimensions.

Abstract translation: 具有大的有效表面积的光纤在与正规矩阵的点的光纤同心的至少两层的点处具有孔。 一层中的孔具有相同的尺寸并占据层中的所有可用点。 在至少两层中，孔具有不同的尺寸。

公开(公告)号：US20020080466A1

公开(公告)日：2002-06-27

申请号：US09988377

申请日：2001-11-19

Applicant: ALCATEL

Inventor： Dominique Bayart ,  Jean-Louis De Bougrenet De La Tocnayes ,  Raymond Chevallier ,  Laurent Dupont

IPC: G02F001/00 ,  G02B026/00

CPC classification number: G02F1/1334 ,  G02F2201/305 ,  G02F2203/02 ,  G02F2203/055 ,  G02F2203/48

Abstract: A spatial light modulator (SLM) is made up of a cell filled with a liquid crystal (LC) based substance. Latter has a variable scattering property with respect to an electric field present in the cell. By using a plurality of electrodes in the direct vicinity of said cell, it is then possible to build an electric field inside it which will permit advantageously to modulate a continuous spectrum from optical signals transmitted through said cell. The different pass bands present in said continuous spectrum while at least few of them comprise at least a respective different wavelength will have to be transmitted through said cell at different regions. Latter will correspond to different values of the amplitude of scattering such to be adapted to modulate the respective different pass bands. Such SLM is used to build a dynamic spectral equalizer. Latter contains a spectral dispersive element placed on an optical path of an incident light beam. This spectral dispersive element will spread continuously said incident light beam onto said SLM such that at least each different wavelength present in said incident light beam are focused or imaged towards a different spatial region of said SLM.

Abstract translation: 空间光调制器（SLM）由填充有液晶（LC）的物质的单元组成。 后者相对于电池中存在的电场具有可变的散射特性。 通过使用在所述单元的直接附近的多个电极，则可以在其内部建立电场，其将有利地从通过所述单元传输的光信号调制连续的频谱。 存在于所述连续光谱中的不同通带，其中至少几个包含至少相应的不同波长的不同通带将必须在不同区域通过所述单元传输。 后者将对应于散射幅度的不同值，以适应于调制各自不同的通带。 这样的SLM用于构建动态频谱均衡器。 后者包含放置在入射光束的光路上的光谱色散元件。 该光谱色散元件将连续地将所述入射光束扩展到所述SLM上，使得存在于所述入射光束中的至少每个不同波长被聚焦或朝向所述SLM的不同空间区域成像。

公开(公告)号：US20040141226A1

公开(公告)日：2004-07-22

申请号：US10754496

申请日：2004-01-12

Applicant: ALCATEL

Inventor： Dominique Mongardien ,  Catherine Martinelli ,  Dominique Bayart

IPC: H01S003/00

CPC classification number: H04B10/2916 ,  H01S3/094003 ,  H01S3/09415 ,  H01S3/302 ,  H01S5/141 ,  H01S5/146

Abstract: Disclosed is a Raman amplifier (10) comprising at least one length of fiber (12) and at least a coupler (14) for coupling at least a first pump laser module (16) and a second pump laser module (18) to said Raman amplifying fiber (12), the first pump laser module (16) comprising a frequency discriminator (24) for selecting an optical frequency to be emitted with an optical power exceeding an optical power of remaining optical frequencies that are also emitted by said first pump laser module (16). The first optical frequency is selected to be spaced apart from a local maximum (28; 36; 48) in optical power of said remaining optical frequencies, and the second pump laser module (18) emits at an optical frequency one Stokes-frequency above the frequency of said local maximum (28; 36; 48). The firts optical frequency and the frequency of said local maximum are chosen on Stokes-frquency above the signal frequency range. As a consequence, the Raman gain provided in Raman amplifying fiber 12 is broadened.

Abstract translation: 公开了一种拉曼放大器（10），其包括至少一个长度的光纤（12）和至少一个用于将至少第一泵浦激光器模块（16）和第二泵激光器模块（18）耦合到所述拉曼的耦合器（14） 放大光纤（12），所述第一泵浦激光器模块（16）包括用于选择要发射的光频率的频率鉴别器（24），所述光学频率的光功率超过所述第一泵浦激光器发射的剩余光学频率的光功率 模块（16）。 第一光频率被选择为与所述剩余光频率的光功率中的局部最大值（28; 36; 48）间隔开，并且第二泵浦激光器模块（18）以高于第一光频率的斯托克斯频率 所述局部最大值的频率（28; 36; 48）。 在高于信号频率范围的斯托克斯频率上选择所述局部最大值的光学频率和频率。 因此，拉曼放大光纤12中提供的拉曼增益变宽。

公开(公告)号：US20040085623A1

公开(公告)日：2004-05-06

申请号：US10671482

申请日：2003-09-29

Applicant: ALCATEL

Inventor： Lionel Provost ,  Christian Simonneau ,  Isabelle Bongrand ,  Philippe Bousselet ,  Christine Moreau ,  Dominique Bayart ,  Laurent Gasca

IPC: H01S003/00

CPC classification number: H01S3/06708 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/094007

Abstract: An optical fiber amplifier is considered comprising a mono-mode core, a first cladding around said core and at least a further cladding around said first cladding while said first cladding includes a ring shaped active region doped with rare earth material surrounding said mono-mode core. Advantageously, the first cladding is designed with a radial refractive index following an almost continuous decreasing function for increasing radius. The use of a continuously decreasing refractive index for the cladding at the outer border of the ring shaped active medium optimize the efficiency of the coupling between the core and the cladding.

Abstract translation: 认为光纤放大器包括单模芯，围绕所述芯的第一包层和围绕所述第一包层的至少另一包层，而所述第一包层包括掺杂有围绕所述单模芯的稀土材料的环形有源区 。 有利地，第一包层被设计成具有径向折射率，跟随用于增加半径的几乎连续的减小函数。 在环形有源介质的外边界处对包层的连续降低的折射率的使用优化了芯和包层之间的耦合的效率。

公开(公告)号：US20030016441A1

公开(公告)日：2003-01-23

申请号：US10193310

申请日：2002-07-12

Applicant: ALCATEL

Inventor： Florence Leplingard ,  Dominique Bayart

IPC: H01S003/00

CPC classification number: H01S3/06758 ,  H01S3/06708 ,  H01S3/06729

Abstract: The invention relates to an optical fiber amplifier device with an optical signal input and output with first piece of amplifying fiber doped with lanthanide in a double-clad structure, a second piece of amplifying fiber doped with lanthanide in a ring structure and lasers for pumping the two fiber pieces with at least one pump module.

Abstract translation: 本发明涉及一种具有光信号输入和输出的光纤放大器装置，其具有在双包层结构中掺杂有镧系元素的第一片放大光纤，在环形结构中掺杂有镧系元素的第二片放大光纤和用于泵浦 两个纤维件与至少一个泵模块。

公开(公告)号：US20020131119A1

公开(公告)日：2002-09-19

申请号：US10084884

申请日：2002-03-01

Applicant: ALCATEL

Inventor： Dominique Hamoir ,  Dominique Bayart

IPC: H04J014/02 ,  H01S003/00

CPC classification number: H04B10/2916

Abstract: The present invention provides a WDM optical communication system, comprising input means and output means for an optical signal, an optical fibre path connecting signal-transmissively said input and output means, wherein the optical signal is amplified by means of Raman amplification and said optical fibre path comprises at least one Raman amplifier, further comprising WDM means for coupling at least two polarized pump radiation wavelengths with wavelengths less than the signal radiation wavelength into said Raman amplifier, wherein one pump radiation wavelength has a selected different polarization with respect to the polarization of the other pump radiation wavelengths.

Abstract translation: 本发明提供了一种WDM光通信系统，包括用于光信号的输入装置和输出装置，连接信号透射所述输入和输出装置的光纤路径，其中光信号通过拉曼放大放大，所述光纤 至少一个拉曼放大器，还包括WDM装置，用于将具有小于信号辐射波长的波长的至少两个偏振泵浦辐射波长耦合到所述拉曼放大器中，其中一个泵浦辐射波长具有相对于 其他泵浦辐射波长。