公开(公告)号：US20090195862A1

公开(公告)日：2009-08-06

申请号：US12254326

申请日：2008-10-20

申请人： Masanori KONDOH ,  Yasushi SUGAYA ,  Togo FUKUSHI ,  Miki ONAKA ,  Kiyotoshi NOHEJI

发明人： Masanori KONDOH ,  Yasushi SUGAYA ,  Togo FUKUSHI ,  Miki ONAKA ,  Kiyotoshi NOHEJI

IPC分类号： H01S3/13

CPC分类号： H01S3/302 ,  H01S3/06758 ,  H01S3/1305 ,  H01S3/2316

摘要： To obtain automatic gain control with high accuracy by including first and second light monitors, a reference light supplying unit supplying reference light of which wavelength is set within a gain band of a distributed Raman amplification and out of a wavelength band of main signal light to the optical transmission path, a first reference light monitor monitoring a power of the reference light input to the optical transmission path from one end side thereof, a second reference light monitor monitoring the power of the reference light output from the other end side of the optical transmission path, and a controlling unit controlling supply of pump light in a pump light supplying unit as well as supervising a state of the optical transmission path, based on monitor results from the first and second light monitor and the monitor results in the first and second reference light monitors.

摘要翻译： 为了通过包括第一和第二光监测器来高精度地获得自动增益控制，参考光供给单元将波长设定在分布的拉曼放大的增益带内并将主信号光的波长带之外的参考光提供给 光传输路径，第一参考光监视器，监视从其一端侧输入到光传输路径的参考光的功率;第二参考光监视器，监视从光传输的另一端输出的参考光的功率 路径，以及控制单元，其基于来自第一和第二光监视器的监视结果控制泵光供给单元中的泵浦光的供给以及监视光传输路径的状态，并且监视器得到第一和第二参考 光显示器。

公开(公告)号：US20120002270A1

公开(公告)日：2012-01-05

申请号：US13169136

申请日：2011-06-27

申请人： Yasushi SUGAYA ,  Takehiro Fujita

发明人： Yasushi SUGAYA ,  Takehiro Fujita

IPC分类号： H01S3/00

CPC分类号： H01S3/06762 ,  H01S3/06766 ,  H01S3/06775 ,  H01S2301/06 ,  H04B10/2572 ,  H04B10/2941

摘要： An optical transmission system includes an optical transmitter that sends signal light to a transmission path, an optical receiver that receives the signal light from the transmission path, and an optical amplifier that is provided on the transmission path and that amplifies the signal light, the optical amplifier being configured to control a gain characteristic of the optical amplifier such that a power of signal light having a wavelength included within a wavelength range in which polarization hole burning occurs is higher than a power of another signal light having a wavelength outside the wavelength range.

摘要翻译： 一种光传输系统包括：向传输路径发送信号光的光发射机;接收来自传输路径的信号光的光接收机;以及设置在传输路径上并放大信号光的光放大器， 放大器被配置为控制光放大器的增益特性，使得包含在发生极化孔燃烧的波长范围内的波长的信号光的功率高于具有波长范围外的波长的另一信号光的功率。

公开(公告)号：US20090225403A1

公开(公告)日：2009-09-10

申请号：US12410027

申请日：2009-03-24

申请人： Yasushi SUGAYA ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

发明人： Yasushi SUGAYA ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

IPC分类号： H01S3/00

CPC分类号： H04B10/296 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/04 ,  H04B10/2931

摘要： A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof.

摘要翻译： 多波长光放大器包括具有放大光输入的第一放大光纤的第一级光放大器，具有放大从第一级光输出的第一光的第二光放大光纤的第二级光放大器 放大器和将第二级光放大器的第二光输出维持在恒定功率电平的光学系统。 第一级和第二级光放大器具有不同的增益与波长特性，使得多波长光放大器与其增益没有波长依赖性。

公开(公告)号：US20090086310A1

公开(公告)日：2009-04-02

申请号：US12328266

申请日：2008-12-04

申请人： Yasushi SUGAYA ,  Susumu Kinoshita

发明人： Yasushi SUGAYA ,  Susumu Kinoshita

IPC分类号： H01S3/00

CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

摘要翻译： 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。

公开(公告)号：US20110205620A1

公开(公告)日：2011-08-25

申请号：US13097669

申请日：2011-04-29

申请人： Yasushi SUGAYA ,  Susumu Kinoshita

发明人： Yasushi SUGAYA ,  Susumu Kinoshita

IPC分类号： H01S3/00

CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

摘要翻译： 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。

公开(公告)号：US20120106971A1

公开(公告)日：2012-05-03

申请号：US13192662

申请日：2011-07-28

申请人： Yasushi SUGAYA

发明人： Yasushi SUGAYA

IPC分类号： H04B10/04 ,  H04J14/02

CPC分类号： H04J14/0279 ,  H04B10/5059 ,  H04B10/516 ,  H04J14/026 ,  H04J14/0275

摘要： An optical transmission device includes: an optical signal generator to generate and transmit an optical signal that transmits data; a detector to detect a number of active clients; and a processor to determine transmission rate of the optical signal according to the number of active clients and quality of the optical signal at an optical receiver.

摘要翻译： 光传输装置包括：光信号发生器，用于产生和发射发送数据的光信号; 用于检测多个活动客户端的检测器; 以及处理器，用于根据活动客户端的数量和光接收机处的光信号的质量来确定光信号的传输速率。

公开(公告)号：US20120063771A1

公开(公告)日：2012-03-15

申请号：US13230048

申请日：2011-09-12

申请人： Yasushi SUGAYA ,  Takehiro FUJITA ,  Satoru OKANO

发明人： Yasushi SUGAYA ,  Takehiro FUJITA ,  Satoru OKANO

IPC分类号： H04J14/02 ,  H04B10/08

CPC分类号： H04B10/2935 ,  H04B10/294 ,  H04J14/0221

摘要： A WDM optical transmission system includes a plurality of optical nodes optically coupled by a transmission line, a processor that is operative to calculate an amount of adjustment of a reception level capable of increasing an optical signal-to-noise ratio for each channel of the WDM light reaching the optical node positioned at a receiving end of the unit section based on information on amplification operation of the WDM light in at least one optical-amplification repeating node disposed on the optical transmission line in the unit section, and to adjust a power level corresponding to each channel of the WDM light transmitted on the transmission line from the optical node positioned at a transmission end of the unit section in accordance with a calculation result of the calculation.

摘要翻译： WDM光传输系统包括通过传输线光耦合的多个光学节点，处理器，其可操作以计算能够增加WDM的每个信道的光信噪比的接收电平的调整量 基于设置在单元部分中的光传输线路上的至少一个光放大重复节点中的WDM光的放大操作的信息的信息，到位于单元部分的接收端的光节点的光，并且调整功率电平 对应于根据计算的计算结果，从位于单元部分的发送端的光节点在传输线上传输的WDM光的每个信道。

公开(公告)号：US20110262140A1

公开(公告)日：2011-10-27

申请号：US13177065

申请日：2011-07-06

申请人： Yasushi SUGAYA ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

发明人： Yasushi SUGAYA ,  Miki Takeda ,  Susumu Kinoshita ,  Terumi Chikama

IPC分类号： H04J14/02

CPC分类号： H04B10/296 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/04 ,  H04B10/2931

摘要： A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof.

摘要翻译： 多波长光放大器包括具有放大光输入的第一放大光纤的第一级光放大器，具有放大从第一级光输出的第一光的第二光放大光纤的第二级光放大器 放大器和将第二级光放大器的第二光输出维持在恒定功率电平的光学系统。 第一级和第二级光放大器具有不同的增益与波长特性，使得多波长光放大器与其增益没有波长依赖性。

公开(公告)号：US20070201876A1

公开(公告)日：2007-08-30

申请号：US11742508

申请日：2007-04-30

申请人： Yasushi SUGAYA

发明人： Yasushi SUGAYA

IPC分类号： H04B10/12

CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

摘要翻译： 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。

公开(公告)号：US20070165299A1

公开(公告)日：2007-07-19

申请号：US11693088

申请日：2007-03-29

申请人： Yasushi SUGAYA ,  Miki TAKEDA ,  Susumu KINOSHITA ,  Terumi CHIKAMA

发明人： Yasushi SUGAYA ,  Miki TAKEDA ,  Susumu KINOSHITA ,  Terumi CHIKAMA

IPC分类号： H01S3/00 ,  H04B10/12

CPC分类号： H04B10/296 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S2301/04 ,  H04B10/2931

摘要： A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof,

摘要翻译： 多波长光放大器包括具有放大光输入的第一放大光纤的第一级光放大器，具有放大从第一级光输出的第一光的第二光放大光纤的第二级光放大器 放大器和将第二级光放大器的第二光输出维持在恒定功率电平的光学系统。 第一级和第二级光放大器具有不同的增益与波长特性，使得多波长光放大器与其增益没有波长依赖性，