公开(公告)号：US08059966B2

公开(公告)日：2011-11-15

申请号：US10516306

申请日：2003-06-11

申请人： Koji Igarashi ,  Shunichi Matsushita ,  Shu Namiki ,  Shigehiro Takasaka ,  Takashi Inoue ,  Hideaki Tobioka ,  Jiro Hiroishi

发明人： Koji Igarashi ,  Shunichi Matsushita ,  Shu Namiki ,  Shigehiro Takasaka ,  Takashi Inoue ,  Hideaki Tobioka ,  Jiro Hiroishi

IPC分类号： H04B10/02

CPC分类号： H04B10/299 ,  G02F1/3513 ,  H04B10/25077

摘要： An optical regeneration system for regenerating a degenerated signal light, comprising a regeneration device having at least one of a soliton converter, a pulse roller, a Kerr-shutter and a soliton purifier. The solilton converter uses an anomalous-dispersion fiber (ADF) having a fiber length up to three times the soliton frequency, and the pulse roller is provided with a pulse roller fiber having high non-linear characteristics. The Kerr-shutter comprises an optical LO (local oscillation) generator for generating an optical LO on an OPLL (optical phase locked loop), a phase comparator for detecting the phase difference between an externally-input signal light and an optical LO, and a control unit for regulating the repeated frequency of an optical LO based on the phase difference. The soliton purifier has a soliton fiber disposed between two optical fibers.

摘要翻译： 一种用于再生退化信号光的光学再生系统，包括具有孤子转换器，脉冲辊，Kerr快门和孤子净化器中的至少一个的再生装置。 solilton转换器使用具有高达孤子频率三倍的光纤长度的异常色散光纤（ADF），并且脉冲辊设置有具有高非线性特性的脉冲辊光纤。 Kerr-shutter包括用于在OPLL（光锁相环）上产生光LO的光LO（本地振荡）发生器，用于检测外部输入信号光与光LO之间的相位差的相位比较器，以及 控制单元，用于基于相位差来调节光学LO的重复频率。 孤子净化器具有设置在两根光纤之间的孤子光纤。

公开(公告)号：US07483608B2

公开(公告)日：2009-01-27

申请号：US10593340

申请日：2005-03-17

申请人： Takashi Inoue ,  Shu Namiki

发明人： Takashi Inoue ,  Shu Namiki

IPC分类号： G02B6/00

CPC分类号： G02F1/365 ,  G02F2203/26 ,  G02F2203/54

摘要： The present invention provides a method for designing an optical pulse shaper including a first optical propagation line unit having a nonlinear medium and a dispersion medium concatenated, including: specifying design specifications of the first optical propagation line unit; and based on the design specification, calculating a quasi-periodic stationary pulse of which a waveform of an input optical pulse to the first optical propagation line unit is similar to a waveform of an output pulse from the first optical propagation line unit.

摘要翻译： 本发明提供一种包括具有非线性介质和分散介质的第一光传播线单元的光脉冲整形器的设计方法，包括：指定第一光传播线单元的设计规格; 并且基于设计规范，计算出与第一光传播线单元的输入光脉冲的波形相似的来自第一光传播线单元的输出脉冲的波形的准周期性静止脉冲。

公开(公告)号：US20080129564A1

公开(公告)日：2008-06-05

申请号：US10579630

申请日：2004-11-16

申请人： Ken-ichi Kitayama ,  Kensuke Ikeda ,  Mohammad Abdul Jalil ,  Shu Namiki ,  Takashi Inoue

发明人： Ken-ichi Kitayama ,  Kensuke Ikeda ,  Mohammad Abdul Jalil ,  Shu Namiki ,  Takashi Inoue

IPC分类号： H03M1/62 ,  G02F1/365

CPC分类号： H04B10/299 ,  G02F1/3519 ,  G02F3/00 ,  G02F7/00 ,  G02F2002/006

摘要： An optically sampling device optically samples an optical analog signal using a sampled signal having a predetermined sampling frequency, and outputs control light having a pulse train of an optically sampled optical analog signal. A signal generating device generates a pulse train of signal light which is synchronized with the sampled signal. An optical encoding device optically encodes the pulse train of the signal light according to the control light, by using optical encoders each including nonlinear optical loop mirrors, and outputs pulse trains of optically encoded signal light from said optical encoders, respectively. An optically quantizing device performs optical threshold processing on the pulse trains of optically-encoded signal light to optically quantize them, by using at least one of optical threshold processors each of which is connected to each of said optical encoders and includes a nonlinear optical device, and outputs optically quantized pulse trains as optical digital signals.

摘要翻译： 光采样装置使用具有预定采样频率的采样信号对光模拟信号进行光学采样，并输出具有光采样光模拟信号的脉冲串的控制光。 信号发生装置产生与采样信号同步的信号光脉冲串。 光编码装置通过使用各自包括非线性光环路镜的光编码器，根据控制光对信号光的脉冲序列进行光学编码，并分别输出来自所述光编码器的光编码信号光的脉冲序列。 光学量化装置对光编码信号光的脉冲序列进行光阈值处理，以光学量化它们，通过使用光阈值处理器中的至少一个连接到每个所述光编码器，并且包括非线性光学装置， 并输出光量化的脉冲串作为光数字信号。

公开(公告)号：US20070280613A1

公开(公告)日：2007-12-06

申请号：US10593340

申请日：2005-03-17

申请人： Takashi Inoue ,  Shu Namiki

发明人： Takashi Inoue ,  Shu Namiki

IPC分类号： G02B6/00

CPC分类号： G02F1/365 ,  G02F2203/26 ,  G02F2203/54

摘要： The present invention provides a method for designing an optical pulse shaper including a first optical propagation line unit having a nonlinear medium and a dispersion medium concatenated, including: specifying design specifications of the first optical propagation line unit; and based on the design specification, calculating a quasi-periodic stationary pulse of which a waveform of an input optical pulse to the first optical propagation line unit is similar to a waveform of an output pulse from the first optical propagation line unit.

摘要翻译： 本发明提供一种包括具有非线性介质和分散介质的第一光传播线单元的光脉冲整形器的设计方法，包括：指定第一光传播线单元的设计规范; 并且基于设计规范，计算出与第一光传播线单元的输入光脉冲的波形相似的来自第一光传播线单元的输出脉冲的波形的准周期性静止脉冲。

公开(公告)号：US20120027343A1

公开(公告)日：2012-02-02

申请号：US13269886

申请日：2011-10-10

申请人： Koji IGARASHI ,  Shunichi Matsushita ,  Shu Namiki ,  Shigehiro Takasaka ,  Takashi Inoue ,  Hideaki Tobioka ,  Jiro Hiroishi

发明人： Koji IGARASHI ,  Shunichi Matsushita ,  Shu Namiki ,  Shigehiro Takasaka ,  Takashi Inoue ,  Hideaki Tobioka ,  Jiro Hiroishi

IPC分类号： G02B6/26

CPC分类号： H04B10/299 ,  G02F1/3513 ,  H04B10/25077

摘要： An optical regeneration system for regenerating a degenerated signal light, comprising a regeneration device having at least one of a soliton converter, a pulse roller, a Kerr-shutter and a soliton purifier. The solilton converter uses an anomalaous-dispersion fiber (ADF) having a fiber length up to three times the soliton frequency, and the pulse roller is provided with a pulse roller fiber having high non-linear characteristics. The Kerr-shutter comprises an optical LO (local oscillation) generator for generating an optical LO on an OPLL (optical phase locked loop), a phase comparator for detecting the phase difference between an externally-input signal light and an optical LO, and a control unit for regulating the repeated frequency of an optical LO based on the phase difference. The soliton purifier has a soliton fiber disposed between two optical fibers.

摘要翻译： 一种用于再生退化信号光的光学再生系统，包括具有孤子转换器，脉冲辊，Kerr快门和孤子净化器中的至少一个的再生装置。 solilton转换器使用光纤长度高达孤子频率三倍的异常色散光纤（ADF），脉冲辊设有具有高非线性特性的脉冲辊光纤。 Kerr-shutter包括用于在OPLL（光锁相环）上产生光LO的光LO（本地振荡）发生器，用于检测外部输入信号光与光LO之间的相位差的相位比较器，以及 控制单元，用于基于相位差来调节光学LO的重复频率。 孤子净化器具有设置在两根光纤之间的孤子光纤。

公开(公告)号：US20060204170A1

公开(公告)日：2006-09-14

申请号：US10516306

申请日：2003-06-11

申请人： Koji Igarashi ,  Shunichi Matsushita ,  Shu Namiki ,  Shigerhiro Takasaka ,  Takashi Inoue ,  Hideaki Tobioka ,  Jiro Hiroishi

发明人： Koji Igarashi ,  Shunichi Matsushita ,  Shu Namiki ,  Shigerhiro Takasaka ,  Takashi Inoue ,  Hideaki Tobioka ,  Jiro Hiroishi

IPC分类号： G02B6/28

CPC分类号： H04B10/299 ,  G02F1/3513 ,  H04B10/25077

摘要： An optical regeneration system for regenerating a degenerated signal light, comprising a regeneration device having at least one of a soliton converter, a pulse roller, a Kerr-shutter and a soliton purifier. The solilton converter uses an anomalaous-dispersion fiber (ADF) having a fiber length up to three times the soliton frequency, and the pulse roller is provided with a pulse roller fiber having high non-linear characteristics. The Kerr-shutter comprises an optical LO (local oscillation) generator for generating an optical LO on an OPLL (optical phase locked loop), a phase comparator for detecting the phase difference between an externally-input signal light and an optical LO, and a control unit for regulating the repeated frequency of an optical LO based on the phase difference. The soliton purifier has a soliton fiber disposed between two optical fibers.

摘要翻译： 一种用于再生退化信号光的光学再生系统，包括具有孤子转换器，脉冲辊，Kerr快门和孤子净化器中的至少一个的再生装置。 solilton转换器使用光纤长度高达孤子频率三倍的异常色散光纤（ADF），脉冲辊设有具有高非线性特性的脉冲辊光纤。 Kerr-shutter包括用于在OPLL（光锁相环）上产生光LO的光LO（本地振荡）发生器，用于检测外部输入信号光与光LO之间的相位差的相位比较器，以及 控制单元，用于基于相位差来调节光学LO的重复频率。 孤子净化器具有设置在两根光纤之间的孤子光纤。

公开(公告)号：US07423564B2

公开(公告)日：2008-09-09

申请号：US10579630

申请日：2004-11-16

申请人： Ken-ichi Kitayama ,  Kensuke Ikeda ,  Mohammad Abdul Jalil ,  Shu Namiki ,  Takashi Inoue

发明人： Ken-ichi Kitayama ,  Kensuke Ikeda ,  Mohammad Abdul Jalil ,  Shu Namiki ,  Takashi Inoue

IPC分类号： H03M1/00

CPC分类号： H04B10/299 ,  G02F1/3519 ,  G02F3/00 ,  G02F7/00 ,  G02F2002/006

摘要： An optically sampling device optically samples an optical analog signal using a sampled signal having a predetermined sampling frequency, and outputs control light having a pulse train of an optically sampled optical analog signal. A signal generating device generates a pulse train of signal light which is synchronized with the sampled signal. An optical encoding device optically encodes the pulse train of the signal light according to the control light, by using optical encoders each including nonlinear optical loop mirrors, and outputs pulse trains of optically encoded signal light from said optical encoders, respectively. An optically quantizing device performs optical threshold processing on the pulse trains of optically-encoded signal light to optically quantize them, by using at least one of optical threshold processors each of which is connected to each of said optical encoders and includes a nonlinear optical device, and outputs optically quantized pulse trains as optical digital signals.

摘要翻译： 光采样装置使用具有预定采样频率的采样信号对光模拟信号进行光学采样，并输出具有光采样光模拟信号的脉冲串的控制光。 信号发生装置产生与采样信号同步的信号光脉冲串。 光编码装置通过使用各自包括非线性光环路镜的光编码器，根据控制光对信号光的脉冲序列进行光学编码，并分别输出来自所述光编码器的光编码信号光的脉冲序列。 光学量化装置对光编码信号光的脉冲序列进行光阈值处理，以光学量化它们，通过使用光阈值处理器中的至少一个连接到每个所述光编码器，并且包括非线性光学装置， 并输出光量化的脉冲串作为光数字信号。

公开(公告)号：US20100067099A1

公开(公告)日：2010-03-18

申请号：US12619455

申请日：2009-11-16

申请人： Youichi AKASAKA ,  Yoshihiro Emori ,  Shu Namiki

发明人： Youichi AKASAKA ,  Yoshihiro Emori ,  Shu Namiki

IPC分类号： H01S3/30 ,  H01S3/00

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.

摘要翻译： 根据本发明的拉曼放大器包括使用Fabry-Perot，DFB或DBR型或MOPA的半导体激光器的多个泵浦装置，并且从泵送装置输出的泵浦光具有不同的中心波长，并且相邻中心波长 大于6nm且小于35nm。 根据本发明的光中继器包括上述拉曼放大器，并且用于补偿拉曼放大器在光纤传输线路中的损耗。 在根据本发明的拉曼放大方法中，泵浦光的中心波长越短，所述泵浦光的光功率越高。 在根据本发明的拉曼放大器中，当将一定的泵浦波长定义为第一通道时，并且将第二至第n通道限定为朝向较长波长侧以大约1THz的间隔布置，泵浦灯 具有对应于第一至第n通道的波长的多路复用，并且将具有与第n个信道间隔开2波长或更长的波长朝向较长波长侧的波长的泵浦光与多路复用光组合，从而形成泵浦 光源。 具有与第（n-1）和（n-2）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。 具有与第（n-2）和（n-3）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。

公开(公告)号：US07072369B2

公开(公告)日：2006-07-04

申请号：US10820771

申请日：2004-04-09

申请人： Shunichi Matsushita ,  Shu Namiki ,  Yoshihiro Emori

发明人： Shunichi Matsushita ,  Shu Namiki ,  Yoshihiro Emori

IPC分类号： H01S3/13 ,  H01S3/30

CPC分类号： H01S5/146 ,  H01S3/094003 ,  H01S3/094073 ,  H01S3/302 ,  H01S5/06236

摘要： The present invention provides the following designing method: in a laser diode module or a depolarized laser diode module which has one laser diode and one polarization maintaining fiber connected to the output side thereof, the length of the polarization maintaining fiber is a value obtained by calculation of equation 37 with use of a longitudinal mode spacing Δλoutput light from the Fabry Perot (FP) laser diode, an oscillating center wavelength λ0 of the laser light, a beat length LBeat 1 of the polarization maintaining fiber and an optical wavelength λBeat used in the measurement of the LBeat 1. (Equation 37) L Pig

摘要翻译： 本发明提供以下设计方法：在激光二极管模块或去极化激光二极管模块中，其具有连接到其输出侧的一个激光二极管和一个偏振保持光纤，所述偏振保持光纤的长度是通过计算获得的值 使用来自法布里珀罗（FP）激光二极管的纵向模式间隔Deltalλ输出光，激光的振荡中心波长λ<0>，拍子长度L < / SUB>和用于测量L“Beat 1”的光波长λ。 （公式37）