公开(公告)号：US06768577B2

公开(公告)日：2004-07-27

申请号：US10097744

申请日：2002-03-15

申请人： Benjamin J. Eggleton ,  Paul Steinvurzel ,  Yoshihiro Emori ,  Shu Namiki ,  Akira Fujisaki ,  Toshio Kimura

发明人： Benjamin J. Eggleton ,  Paul Steinvurzel ,  Yoshihiro Emori ,  Shu Namiki ,  Akira Fujisaki ,  Toshio Kimura

IPC分类号： H01S300

CPC分类号： H01S3/09415 ,  H01S3/094003 ,  H01S3/094069 ,  H01S3/302

摘要： A tunable multimode wavelength division multiplex Raman pump and amplifier, and a system, method, and computer program product for controlling a tunable Raman pump and amplifier. The tunability of the pump source is accomplished by either straining or heating an external fiber grating, thereby causing a different wavelength of light to be emitted by the pump source. The system includes a microprocessor-based controller that monitors an amplifier's performance and adjusts the drive current and/or wavelength of the tunable pumps of an amplifier to achieve a target performance.

摘要翻译： 可调多模波分复用拉曼泵浦放大器，以及用于控制可调拉曼泵浦和放大器的系统，方法和计算机程序产品。 泵浦源的可调性是通过对外部光纤光栅进行应变或加热来实现的，从而导致不同波长的光被泵浦光源发射。 该系统包括基于微处理器的控制器，其监视放大器的性能并调节放大器的可调谐泵的驱动电流和/或波长以实现目标性能。

公开(公告)号：US06654162B2

公开(公告)日：2003-11-25

申请号：US09886212

申请日：2001-06-22

申请人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

发明人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

IPC分类号： H01S330

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/0912 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094096 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/2375 ,  H01S3/2383 ,  H01S2301/04 ,  H04B10/2916

摘要： A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n−1)-th and (n−2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n−2)-th and (n−3)-th channels may be multiplexed, thereby forming the pumping light source.

公开(公告)号：US06636344B2

公开(公告)日：2003-10-21

申请号：US09944601

申请日：2001-09-04

申请人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

发明人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

IPC分类号： H01S310

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/0912 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094096 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/2375 ,  H01S3/2383 ,  H01S2301/04 ,  H04B10/2916

摘要： A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n−1)-th and (n−2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n−2)-th and (n−3)-th channels may be multiplexed, thereby forming the pumping light source.

公开(公告)号：US06633697B2

公开(公告)日：2003-10-14

申请号：US09774026

申请日：2001-01-31

申请人： Yoshihiro Emori ,  Shu Namiki

发明人： Yoshihiro Emori ,  Shu Namiki

IPC分类号： G02B626

CPC分类号： H04B10/2916 ,  H01S3/094011 ,  H01S3/302

摘要： First pump light for Raman-amplifying optical signal is inputted to the output end of the optical signal, and second pump light used for Raman-amplifying the first pump light and having a wavelength shorter than that of the first pump light is inputted to the input end of the optical signal. The second pump light is also inputted to the output end of the optical signal. The first pump light is also inputted to the input end of the optical signal. The Raman amplification band of the second pump light is made not to be overlapped with that of the optical signal. The wavelength of the second pump light is shorter than that of the first pump light by the Raman shift of the amplifier fiber. The light source of either the first or second pump light or both the light sources of them are multiplex optical sources. The first pump light is emitted from a semiconductor laser. Third pump light for Raman-amplifying the second pump light is directed to an optical transmission line. The optical signal is transmitted through a transmission line using the Raman amplification method.

摘要翻译： 用于拉曼放大光信号的第一泵浦光被输入到光信号的输出端，并且用于拉曼放大第一泵浦光并且具有比第一泵浦光的波长短的波长的第二泵浦光被输入到输入 结束光信号。 第二泵浦光也被输入到光信号的输出端。 第一泵浦光也被输入到光信号的输入端。 第二泵浦光的拉曼放大频带不与光信号的拉曼放大频带重叠。 第二泵浦光的波长通过放大器光纤的拉曼偏移比第一泵浦光的波长短。 第一或第二泵浦光或其两个光源的光源是多路光源。 第一泵浦光从半导体激光器发射。 用于拉曼放大第二泵浦光的第三泵浦光被引导到光传输线。 光信号通过使用拉曼放大法的传输线传输

公开(公告)号：US06611370B2

公开(公告)日：2003-08-26

申请号：US09775632

申请日：2001-02-05

申请人： Shu Namiki ,  Yoshihiro Emori ,  Mikio Ogai

发明人： Shu Namiki ,  Yoshihiro Emori ,  Mikio Ogai

IPC分类号： H01S330

CPC分类号： H04B10/2916 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1312 ,  H01S3/2383 ,  H01S3/302 ,  H04B10/2942

摘要： A Raman amplifier, system and method using a plurality of pumps configured to pump light into an optical fiber so as to Raman-amplify an optical signal propagating through the optical fiber. The Raman amplifier also includes an optical coupler configured to optically interconnect the pumping device with the optical fiber, and a control unit configured to control the pumping device so as to achieve a target amplification performance. Further, the control unit monitors the Raman-amplified WDM signal and determines if the monitored Raman-amplified WDM signal is within an allowable tolerance of the target amplification performance. If the Raman-amplified signal is not within the allowable tolerance, the control unit actively controls the pumps to bring the monitored Raman-amplified signal within the allowable tolerance of the target amplification profile.

摘要翻译： 一种拉曼放大器，使用多个泵的系统和方法，所述多个泵被配置为将光泵送到光纤中，以便对通过光纤传播的光信号进行拉曼放大。 所述拉曼放大器还包括被配置为将所述泵送装置与所述光纤互连的光耦合器，以及被配置为控制所述泵送装置以实现目标放大性能的控制单元。 此外，控制单元监视拉曼放大的WDM信号，并确定所监视的拉曼放大的WDM信号是否在目标放大性能的允许容限之内。 如果拉曼放大的信号不在允许的容限范围内，则控制单元主动地控制泵将被监测的拉曼放大信号置于目标放大曲线的允许容限之内。

公开(公告)号：US08437074B2

公开(公告)日：2013-05-07

申请号：US13023301

申请日：2011-02-08

申请人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

发明人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

IPC分类号： H04B10/17 ,  H01S3/0941 ,  H01S3/13

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/0912 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094096 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/2375 ,  H01S3/2383 ,  H01S2301/04 ,  H04B10/2916

摘要： A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source.

公开(公告)号：US07769298B2

公开(公告)日：2010-08-03

申请号：US12238065

申请日：2008-09-25

申请人： Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

发明人： Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

IPC分类号： H04B10/12

CPC分类号： G02F1/365 ,  G02F1/3513 ,  G02F2203/17 ,  G02F2203/26 ,  H01S5/0623 ,  H04B10/25077 ,  H04B10/291

摘要： The present invention provides a pulse train generator comprising: a dual-frequency signal light source for generating a dual-frequency signal; a soliton shaper for soliton-shaping output light from the dual-frequency signal light source; and an adiabatic soliton compressor for performing adiabatic soliton compression on output light from the soliton shaper, and also provides a waveform shaper used in this pulse train generator, including a plurality of highly nonlinear optical transmission lines and a plurality of low-nonlinearity optical transmission lines which has a nonlinearity coefficient lower than that of the plurality of highly nonlinear optical transmission lines and which has a second-order dispersion value of which an absolute value is different from that of the plurality of highly nonlinear optical transmission lines. Further, the present invention provides a light source comprising a plurality of continuous light sources of which at least one oscillates in a multimode; a multiplexer for multiplexing output light from the continuous light sources; and a nonlinear phenomenon producer for producing a nonlinear phenomenon on output light from the multiplexer so as to suppress SBS (Stimulated Brillouin Scattering).

摘要翻译： 本发明提供一种脉冲串发生器，包括：用于产生双频信号的双频信号光源; 用于孤子整形的孤子整形器来自双频信号光源的输出光; 以及用于对来自孤子整形器的输出光进行绝热孤子压缩的绝热孤子压缩器，并且还提供在该脉冲串发生器中使用的波形整形器，包括多个高度非线性的光传输线和多个低非线性光传输线 其具有比多个高度非线性光传输线的非线性系数低的非线性系数，并且具有绝对值与多个高度非线性光传输线的绝对值不同的二阶色散值。 此外，本发明提供了一种光源，其包括至少一个以多模振荡的多个连续光源; 多路复用器，用于复用来自连续光源的输出光; 以及用于在来自多路复用器的输出光上产生非线性现象以抑制SBS（受激布里渊散射）的非线性现象产生器。

公开(公告)号：US07206123B2

公开(公告)日：2007-04-17

申请号：US10935286

申请日：2004-09-08

申请人： Yoshihiro Emori ,  Jake Bromage ,  Lynn E. Nelson ,  Shu Namiki

发明人： Yoshihiro Emori ,  Jake Bromage ,  Lynn E. Nelson ,  Shu Namiki

IPC分类号： H01S4/00 ,  H04B10/12

CPC分类号： H01S3/06754 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/0941 ,  H01S3/10069 ,  H01S3/1305 ,  H01S3/302 ,  H04B10/2916

摘要： A method, pump and Raman amplifier control an amount of stimulated Brillouin scattering (SBS) produced by the Raman amplifier pump so as to regulate a power penalty experienced by a receiver due to the SBS. A multi-mode semiconductor laser produces a multi-mode pump light having a dominate mode at a predetermined wavelength. At least a portion of the multi-mode pump light is coupled to a Raman gain medium in a forward pumping direction. A reflection sensor monitors reflected light that is at least partially reflected from said Raman gain medium. The reflection sensor has a passband characteristic that passes optical power of a dominate SBS peak of said reflected light, but suppresses other SBS peaks that are offset in wavelength from said dominate SBS peak. The optical power of the dominate SBS peak is compared to an optical power of the multi-mode pump light, and it is determined whether a result of the comparing step is above a predetermined threshold.

摘要翻译： 一种方法，泵浦和拉曼放大器控制由拉曼放大器泵产生的受激布里渊散射（SBS）的量，以便调节由于SBS而导致的接收器所经受的功率损失。 多模半导体激光器产生具有预定波长的主导模式的多模式泵浦光。 至少一部分多模式泵浦光在正向泵送方向上耦合到拉曼增益介质。 反射传感器监测至少部分地从所述拉曼增益介质反射的反射光。 反射传感器具有通过所述反射光的主要SBS峰值的光焦度的通带特性，但抑制了波长偏离所述主导SBS峰值的其他SBS峰值。 将主要SBS峰值的光功率与多模式泵浦光的光功率进行比较，并且确定比较步骤的结果是否高于预定阈值。

公开(公告)号：US20060002715A1

公开(公告)日：2006-01-05

申请号：US11134275

申请日：2005-05-23

申请人： Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

发明人： Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

IPC分类号： H04B10/00

CPC分类号： G02F1/365 ,  G02F1/3513 ,  G02F2203/17 ,  G02F2203/26 ,  H01S5/0623 ,  H04B10/25077 ,  H04B10/291

摘要： The present invention provides a pulse train generator comprising: a dual-frequency signal light source for generating a dual-frequency signal; a soliton shaper for soliton-shaping output light from the dual-frequency signal light source; and an adiabatic soliton compressor for performing adiabatic soliton compression on output light from the soliton shaper, and also provides a waveform shaper used in this pulse train generator, including a plurality of highly nonlinear optical transmission lines and a plurality of low-nonlinearity optical transmission lines which has a nonlinearity coefficient lower than that of the plurality of highly nonlinear optical transmission lines and which has a second-order dispersion value of which an absolute value is different from that of the plurality of highly nonlinear optical transmission lines. Further, the present invention provides a light source comprising a plurality of continuous light sources of which at least one oscillates in a multimode; a multiplexer for multiplexing output light from the continuous light sources; and a nonlinear phenomenon producer for producing a nonlinear phenomenon on output light from the multiplexer so as to suppress SBS (Stimulated Brillouin Scattering).

摘要翻译： 本发明提供一种脉冲串发生器，包括：用于产生双频信号的双频信号光源; 用于孤子整形的孤子整形器来自双频信号光源的输出光; 以及用于对来自孤子整形器的输出光进行绝热孤子压缩的绝热孤子压缩器，并且还提供在该脉冲串发生器中使用的波形整形器，包括多个高度非线性的光传输线和多个低非线性光传输线 其具有比多个高度非线性光传输线的非线性系数低的非线性系数，并且具有绝对值与多个高度非线性光传输线的绝对值不同的二阶色散值。 此外，本发明提供了一种光源，其包括至少一个以多模振荡的多个连续光源; 多路复用器，用于复用来自连续光源的输出光; 以及用于在来自多路复用器的输出光上产生非线性现象以抑制SBS（受激布里渊散射）的非线性现象产生器。

公开(公告)号：US06977769B2

公开(公告)日：2005-12-20

申请号：US10062189

申请日：2002-01-30

申请人： Shunichi Matsushita ,  Yoshihiro Emori ,  Shu Namiki

发明人： Shunichi Matsushita ,  Yoshihiro Emori ,  Shu Namiki

IPC分类号： G02F1/35 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/30

CPC分类号： H04B10/2916 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094073 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/30 ,  H01S3/302

摘要： Disclosed are: a pump light source device for Raman amplification for outputting a pump light for causing signal lightwaves introduced into an optical fiber to undergo Raman amplification therein, the device including two light sources, a polarization beam combiner or a polarization-maintaining optical beam coupler to which two lightwaves are input and which is adapted to combine and output these lightwaves, and a depolarizer adapted to depolarize and output the input lightwaves, wherein the lightwaves output from the two light sources are input to the polarization beam combiner or the polarization-maintaining optical beam coupler to output a combined composite lightwave, the composite lightwave being input to the depolarizer to output a lightwave with lower degree of polarization; and a Raman amplification system using the same.

摘要翻译： 公开了一种用于拉伸放大的泵浦光源装置，用于输出用于使引入光纤的信号光波进行拉曼放大的泵浦光，该装置包括两个光源，偏振光束组合器或偏振保持光束耦合器 其中输入两个光波并适于组合和输出这些光波;以及去偏振器，其适于去偏振和输出输入光波，其中从两个光源输出的光波输入到偏振光束组合器或偏振维持 光束耦合器输出组合的复合光波，复合光波被输入到去偏振器以输出具有较低偏振度的光波; 和使用其的拉曼放大系统。