公开(公告)号：US07983564B2

公开(公告)日：2011-07-19

申请号：US12068026

申请日：2008-01-31

申请人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/2513 ,  H04B10/2557 ,  H04J14/0201

摘要： A wavelength division multiplexing system according to the present art adjusts the amount of dispersion compensation (the amount of dispersion compensation of an NZ-DSF and a DCF) every all spans on the basis of the time slot when an intensity modulation signal transmitter outputs an intensity modulation signal and the wavelength interval when a wavelength coupler multiplexes a phase modulation signal (output from a phase modulation signal transmitter) and the intensity modulation signal.

摘要翻译： 根据本发明的波分复用系统根据强度调制信号发射机输出强度的时隙，调整每个跨度的色散补偿量（NZ-DSF和DCF的色散补偿量） 调制信号和波长耦合器复用相位调制信号（相位调制信号发射机的输出）和强度调制信号的波长间隔。

公开(公告)号：US20080199182A1

公开(公告)日：2008-08-21

申请号：US12068026

申请日：2008-01-31

申请人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/2513 ,  H04B10/2557 ,  H04J14/0201

摘要： A wavelength division multiplexing system according to the present art adjusts the amount of dispersion compensation (the amount of dispersion compensation of an NZ-DSF and a DCF) every all spans on the basis of the time slot when an intensity modulation signal transmitter outputs an intensity modulation signal and the wavelength interval when a wavelength coupler multiplexes a phase modulation signal (output from a phase modulation signal transmitter) and the intensity modulation signal.

摘要翻译： 根据本发明的波分复用系统根据强度调制信号发射机输出强度的时隙，调整每个跨度的色散补偿量（NZ-DSF和DCF的色散补偿量） 调制信号和波长耦合器复用相位调制信号（相位调制信号发射机的输出）和强度调制信号的波长间隔。

公开(公告)号：US07725032B2

公开(公告)日：2010-05-25

申请号：US11319371

申请日：2005-12-29

申请人： Miki Onaka ,  Yasushi Sugaya ,  Hiroki Ooi

发明人： Miki Onaka ,  Yasushi Sugaya ,  Hiroki Ooi

IPC分类号： H04B10/12 ,  H04B10/08 ,  H04J14/02

CPC分类号： H04J14/0221 ,  H04B10/296 ,  H04B2210/003 ,  H04B2210/256 ,  H04J14/0201 ,  H04J14/0212

摘要： An optical transmission apparatus includes an optical add drop multiplexer (OADM) that adds/drops an optical signal to/from a transmission path. The optical transmission apparatus further includes a pump light multiplexer and a dispersion compensation fiber that are located downstream of the OADM on the transmission path. The optical transmission apparatus is configured to house a pump light source connectable to the pump light multiplexer to Raman amplify an optical signal in the dispersion compensation fiber.

摘要翻译： 一种光传输装置包括一个光传输分路复用器（OADM），用于将光信号与传输路径相加/放出。 光传输装置还包括位于传输路径上的OADM下游的泵浦光多路复用器和色散补偿光纤。 光传输装置被配置为容纳可连接到泵浦光多路复用器的泵浦光源，以拉曼扩散色散补偿光纤中的光信号。

公开(公告)号：US20060222367A1

公开(公告)日：2006-10-05

申请号：US11319371

申请日：2005-12-29

申请人： Miki Onaka ,  Yasushi Sugaya ,  Hiroki Ooi

发明人： Miki Onaka ,  Yasushi Sugaya ,  Hiroki Ooi

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04B10/296 ,  H04B2210/003 ,  H04B2210/256 ,  H04J14/0201 ,  H04J14/0212

摘要： An optical transmission apparatus includes an optical add drop multiplexer (OADM) that adds/drops an optical signal to/from a transmission path. The optical transmission apparatus further includes a pump light multiplexer and a dispersion compensation fiber that are located downstream of the OADM on the transmission path. The optical transmission apparatus is configured to house a pump light source connectable to the pump light multiplexer to Raman amplify an optical signal in the dispersion compensation fiber.

摘要翻译： 一种光传输装置包括一个光传输分路复用器（OADM），用于将光信号与传输路径相加/放出。 光传输装置还包括位于传输路径上的OADM下游的泵浦光多路复用器和色散补偿光纤。 光传输装置被配置为容纳可连接到泵浦光多路复用器的泵浦光源，以拉曼扩散色散补偿光纤中的光信号。

公开(公告)号：US08068730B2

公开(公告)日：2011-11-29

申请号：US12219862

申请日：2008-07-29

申请人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04B10/08

CPC分类号： H04B10/07955 ,  H04J14/0212 ,  H04J14/0221

摘要： A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels which forms a wavelength division multiplex signal, and an approximation unit that determines a power level and a wavelength of each channel by approximating the power level in a plurality of wavelength bands which the measuring unit measured with the approximate waveform of each channel which the waveform determination unit determined.

摘要翻译： WDM信号监视系统包括测量单元，其测量关于波分多路复用信号的多个预定波长带中的功率电平;波形确定单元，其从每个比特率和多个调制系统的调制系统确定每个信道的近似波形 形成波分复用信号的通道，以及近似单元，其通过近似多个波长带中的功率电平来确定每个通道的功率电平和波长，所述多个波长带中测量单元用每个通道的近似波形测量波形 确定单位确定。

公开(公告)号：US20090041456A1

公开(公告)日：2009-02-12

申请号：US12219862

申请日：2008-07-29

申请人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04B10/07955 ,  H04J14/0212 ,  H04J14/0221

摘要： A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels which forms a wavelength division multiplex signal, and an approximation unit that determines a power level and a wavelength of each channel by approximating the power level in a plurality of wavelength bands which the measuring unit measured with the approximate waveform of each channel which the waveform determination unit determined.

摘要翻译： WDM信号监视系统包括测量单元，其测量关于波分多路复用信号的多个预定波长带中的功率电平;波形确定单元，其从每个比特率和多个调制系统的调制系统确定每个信道的近似波形 形成波分复用信号的通道，以及近似单元，其通过近似多个波长带中的功率电平来确定每个通道的功率电平和波长，所述多个波长带中测量单元用每个通道的近似波形测量波形 确定单位确定。

公开(公告)号：US08681420B2

公开(公告)日：2014-03-25

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： H04B10/17 ,  H04J1/00

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：US08553319B2

公开(公告)日：2013-10-08

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： H04B10/12 ,  H04B10/17

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.

公开(公告)号：US07843631B2

公开(公告)日：2010-11-30

申请号：US11859842

申请日：2007-09-24

申请人： Miki Onaka ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Miki Onaka ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/1301 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1305 ,  H04B10/296

摘要： The present invention relates to an apparatus for controlling a gain of an optical amplifier, and the apparatus comprises a target gain calculating unit for calculating, as a target gain for an optical amplifier, a value obtained by increasing or decreasing a gain (output) of signal light as the number of wavelengths of wavelength-multiplexed signal light decreases, and a control signal outputting unit for outputting a control signal to the optical amplifier so as to amplify the wavelength-multiplexed signal light with the target gain calculated by the target gain calculating unit. This promptly suppresses a fluctuation of signal light level, particularly, a fluctuation of output light power of an optical amplifier stemming from a variation of the number of wavelengths of wavelength-multiplexed signal light.

摘要翻译： 本发明涉及一种用于控制光放大器的增益的装置，该装置包括：目标增益计算单元，用于计算通过增加或减少增益（输出）获得的值作为光放大器的目标增益 波长多路复用信号光的波长数的信号光减少;以及控制信号输出单元，用于向光放大器输出控制信号，以便以目标增益计算的目标增益放大波分复用信号光 单元。 这迅速地抑制信号光电平的波动，特别是由波长多路复用信号光的波长数的变化导致的光放大器的输出光功率的波动。

公开(公告)号：US20100157416A1

公开(公告)日：2010-06-24

申请号：US12659027

申请日：2010-02-23

申请人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara

发明人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara

IPC分类号： H01S3/30

CPC分类号： G02B6/264 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In an optical transmission system according to one aspect of the present invention, for transmitting a WDM light from a transmission station to a reception station, utilizing a Raman amplifier, the Raman amplifier comprises: an optical amplification medium; a pumping light source generating a plurality of pumping lights having wavelengths different from each other; an optical device introducing the plurality of pumping lights to the optical amplification medium; and control means for controlling the pumping light source, the transmission station sends out a plurality of reference lights having wavelengths at which respective Raman gain obtained by the plurality of pumping lights reach peaks or wavelengths close to the above wavelengths, and the control means controls the plurality of pumping lights based on the optical powers of the plurality of reference lights. Thus, it becomes possible to accurately manage the optical power balance of the WDM light and the optical power of the entire WDM light.

摘要翻译： 在根据本发明的一个方面的光传输系统中，为了利用拉曼放大器将来自发射站的WDM光发射到接收站，所述拉曼放大器包括：光放大介质; 产生具有彼此不同波长的多个泵浦光的泵浦光源; 将所述多个泵浦光引入所述光放大介质的光学装置; 以及用于控制所述泵浦光源的控制装置，所述发送站发出多个具有波长的参考光，所述波长使由所述多个泵浦光获得的各拉曼增益达到接近上述波长的波峰或波长，并且所述控制装置控制 基于多个参考光的光功率的多个泵浦光。 因此，可以精确地管理WDM光的光功率平衡和整个WDM光的光功率。