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：US20040174913A1

公开(公告)日：2004-09-09

申请号：US10781626

申请日：2004-02-20

Applicant: ALCATEL

Inventor： Florence Leplingard ,  Catherine Martinelli ,  Sophie Borne ,  Carlos De Barros ,  Thierry Lopez

IPC: H01S003/30

CPC classification number: H01S3/302

Abstract: Disclosed is a Raman laser device (10) having a first cavity in which lasing occurs at a first frequency, and at least one second cavity in which lasing occurs at a second frequency. Thereby respective first and second waves inside the respective cavities are generated having a first power and a second power, respectively. Further, beams propagating outside the cavities are generated by coupling out a part of the first power and a part of the second power utilizing respective output mirrors. The part of the second power that is coupled out is attenuated without attenuating the complementary part of the second power remaining in the second cavity. The Raman laser device is characterized in that the part of the second power that is coupled out is attenuated utilizing at least one Fiber Bragg Grating (46, 62).

Abstract translation: 公开了一种拉曼激光装置（10），其具有第一空腔，其中以第一频率发生激光，以及至少一个第二腔，其中以第二频率发生激光。 从而分别产生具有第一功率和第二功率的相应空腔内各自的第一和第二波。 此外，通过使用相应的输出反射镜耦合输出第一功率的一部分和第二功率的一部分来产生在空腔外部传播的光束。 耦合出的第二功率的部分被衰减，而不会衰减残留在第二腔中的第二功率的互补部分。 拉曼激光器件的特征在于，使用至少一个光纤布拉格光栅（46,62）衰减耦合出的第二功率的部分。

公开(公告)号：US20030202797A1

公开(公告)日：2003-10-30

申请号：US10373023

申请日：2003-02-26

Applicant: ALCATEL

Inventor： Frederic Seguineau ,  Olivier Leclerc ,  Emmanuel Desurvire ,  Catherine Martinelli

IPC: H04B010/00

CPC classification number: H04B10/299 ,  H04B10/2557 ,  H04B10/2916

Abstract: A method for remodulation of a modulated optical signal is disclosed which uses a disturbed line signal and an optical clock signal derived from the undisturbed original line signal modulated with the bitrate frequency feeding both signals in a Raman amplifying fiber connected to at least one Raman pump running the clock signal as Raman pump wavelength for the line signal.

Abstract translation: 公开了一种用于再调制调制光信号的方法，其使用受干扰的线路信号和从未受干扰的原始线路信号导出的光学时钟信号，该信号由比特率频率调制，以在连接至少一个拉曼泵的拉曼放大光纤中馈送两个信号 时钟信号作为拉曼泵浦波长的线路信号。

公开(公告)号：US20040201881A1

公开(公告)日：2004-10-14

申请号：US10815845

申请日：2004-04-02

Applicant: ALCATEL

Inventor： Catherine Martinelli ,  Dominique Mongardien

IPC: H01S003/00

CPC classification number: H04B10/2916 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/302

Abstract: The invention is dealing with a Raman amplifying device comprising an optical path, pump sources for generating a plurality of Raman pump signals and means for coupling the plurality of Raman pump signals into the optical path for backward pumping. The plurality of optical Raman pump signals are time-division multiplexed by multiplexing controlling means and the controlling means apply a modulation frequency beyond the corner frequency of the co-propagating modulation transfer function. The method to modulate the time division multiplexed Raman signal gives a condition to avoid the increase of double Rayleigh scattering noise.

Abstract translation: 本发明涉及一种包括光路的拉曼放大装置，用于产生多个拉曼泵浦信号的泵浦源和用于将多个拉曼泵浦信号耦合到用于反向泵送的光路中的装置。 多个光拉曼泵浦信号由多路复用控制装置进行时分复用，并且控制装置施加超过共同传播调制传递函数的转角频率的调制频率。 调制时分复用拉曼信号的方法提供了避免双瑞利散射噪声增加的条件。

公开(公告)号：US20040196536A1

公开(公告)日：2004-10-07

申请号：US10791382

申请日：2004-03-03

Applicant: ALCATEL

Inventor： Ekaterina Bourova ,  Christian Simonneau ,  Catherine Martinelli ,  Lionel Provost

IPC: H01S003/00

CPC classification number: H01S3/06754 ,  H01S3/0672 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/04

Abstract: The amplifying optical fiber (1) comprises a single-mode core (10) and a multimode core (20) surrounding the single-mode core, the multimode core containing a doped layer referred to as a nulldoped ringnull (21) and having a certain concentration of active rare earth ions (6) to perform amplification by active rare earth ions on at least one optical signal for injection into the amplifying fiber. The fiber is dimensioned so that the product of its length multiplied by its Raman efficiency is greater than or equal to 0.5 Wnull1. In addition, the fiber presents absorption defined by an absorption coefficient expressed in dB/m, which absorption presents, at a certain wavelength, a maximum value referred to as the nullabsorption maximumnull, the fiber presents accumulated absorption, corresponding to the product of its length multiplied by the absorption maximum, that is greater than or equal to 100 dB. The invention also provides an amplifier including such a fiber, a single-mode pump, and a multimode pump.

Abstract translation: 放大光纤（1）包括单模核心（10）和围绕单模核心的多模核心（20），所述多模核心包含被称为“掺杂环”（21）的掺杂层，并且具有 一定浓度的活性稀土离子（6）通过活性稀土离子在至少一个光信号上进行放大以注入到放大光纤中。 纤维的尺寸使其长度乘以其拉曼效率的乘积大于或等于0.5W -1。 此外，纤维呈现由以dB / m表示的吸收系数定义的吸收，该吸收在一定波长处呈现称为“吸收最大值”的最大值，纤维呈现累积吸收，对应于 其长度乘以吸收最大值，即大于或等于100 dB。 本发明还提供一种包括这种光纤的放大器，单模式泵和多模式泵。

公开(公告)号：US20040161190A1

公开(公告)日：2004-08-19

申请号：US10771426

申请日：2004-02-05

Applicant: ALCATEL

Inventor： Catherine Martinelli

IPC: G02B006/26 ,  H01S003/30

CPC classification number: H04B10/2916

Abstract: It is disclosed a pump energy source (20) for providing pump energy (E_p) to an optical transmission system (100) transmitting an optical signal along an optical fiber, in particular an optical transmission system (100) in which a beam of said pump energy (E_p) is introduced to said optical fiber so that said beam of said pump energy (E_p) copropagates with said optical signal.

Abstract translation: 公开了一种用于向沿着光纤传输光信号的光传输系统（100）提供泵浦能量（E_p）的泵浦能源（20），特别是光传输系统（100），其中所述泵 能量（E_p）被引入所述光纤，使得所述泵浦能量（E_p）的所述光束与所述光信号共同传播。

公开(公告)号：US20040125827A1

公开(公告)日：2004-07-01

申请号：US10624510

申请日：2003-07-23

Applicant: ALCATEL

Inventor： Catherine Martinelli ,  Florence Leplingard ,  Thibaut Sylvestre ,  Frederique Vanholsbeeck ,  Philippe Emplit

IPC: H01S003/30

CPC classification number: H01S3/302 ,  H01S3/0675 ,  H01S3/06791 ,  H01S3/08086 ,  H01S3/1083

Abstract: A cascaded Raman laser (10) has a pump radiation source (12) emitting at a pump wavelength nullp, an input section (14) and an output section (16) made of an optical medium. Each section (14, 16) comprises wavelength selectors (141, 142, . . . , 145 and 161, 162, . . . , 165) for wavelengths null1, null2, . . . , nullnnullk, where nnull3, nullp

Abstract translation: 级联拉曼激光器（10）具有以泵浦波长发射的泵浦辐射源（12），输入部分（14）和由光学介质制成的输出部分（16）。 每个部分（14,16）包括用于波长λ1，λ2，...的波长选择器（141,142，...，145和161,162，...，165）。 。 。 ，lambdan-k，其中n> = 3，lambdap = 1，发射激光的波长（10）。 激光器还包括由非线性光学介质制成的腔内部分（18），其具有零色散波长λ0并且设置在输入（14）和输出（16）部分之间。 波长λ1，λ2，... 。 。 ，选择波长选择器（141,142，...，145和161,162，...，165）的lambdan-k和腔内部分（18）的零色散波长λ0，使得能量被传送 通过多波混频在不同波长之间。