公开(公告)号：US07315557B2

公开(公告)日：2008-01-01

申请号：US10809841

申请日：2004-03-26

申请人： Fumio Futami ,  Shigeki Watanabe ,  Yutaka Takita

发明人： Fumio Futami ,  Shigeki Watanabe ,  Yutaka Takita

IPC分类号： H01S3/10

CPC分类号： H04B10/506 ,  G02F1/00 ,  G02F2203/56 ,  H04J14/0221

摘要： A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The spectrum expanding device broadens the spectrum of the pulse sequence with a nonlinear medium. A modulator array extracts longitudinal mode components from the expanded spectrum, and modulates the extracted longitudinal mode components with modulation data. Lastly, the modulated longitudinal mode components are coupled and transmitted to a transmission line.

摘要翻译： 通过使从脉冲光源输出的脉冲波形成三阶以上的超高斯脉冲，并输入到频谱扩展装置，构成脉冲序列。 频谱扩展装置用非线性介质拓宽脉冲序列的频谱。 调制器阵列从扩展频谱中提取纵模分量，并用调制数据调制提取的纵模分量。 最后，调制的纵向模式分量被耦合并传输到传输线。

公开(公告)号：US07088491B2

公开(公告)日：2006-08-08

申请号：US10827328

申请日：2004-04-20

申请人： Yutaka Takita ,  Shigeki Watanabe ,  Fumio Futami

发明人： Yutaka Takita ,  Shigeki Watanabe ,  Fumio Futami

IPC分类号： G02F1/01

CPC分类号： H04B10/508 ,  G02F1/0311 ,  G02F2203/50

摘要： An apparatus and method generating an optical pulse of picosecond class (having a high duty ratio), which accurately and stably operates at an arbitrary repetition frequency, has a high OSNR, and is not restricted by an RF modulation frequency, are provided. New modulation spectrum components are generated by performing phase modulation for light output from a single wavelength laser light source with an optical phase modulator. The phases of the modulation spectrum components are aligned by a phase adjuster, so that a pulse wave in a time domain is generated.

摘要翻译： 提供了以任意重复频率精确稳定地操作的皮秒级（具有高占空比）的光脉冲的装置和方法具有高OSNR，并且不受RF调制频率的限制。 通过对具有光相位调制器的单个波长激光光源的光输出执行相位调制来产生新的调制频谱分量。 调制频谱分量的相位由相位调整器对准，从而产生时域中的脉冲波。

公开(公告)号：US20050047453A1

公开(公告)日：2005-03-03

申请号：US10809841

申请日：2004-03-26

申请人： Fumio Futami ,  Shigeki Watanabe ,  Yutaka Takita

发明人： Fumio Futami ,  Shigeki Watanabe ,  Yutaka Takita

IPC分类号： G02F1/13 ,  G02F1/00 ,  G02F1/365 ,  H04J14/02 ,  H01S3/10

CPC分类号： H04B10/506 ,  G02F1/00 ,  G02F2203/56 ,  H04J14/0221

摘要： A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The spectrum expanding device broadens the spectrum of the pulse sequence with a nonlinear medium. A modulator array extracts longitudinal mode components from the expanded spectrum, and modulates the extracted longitudinal mode components with modulation data. Lastly, the modulated longitudinal mode components are coupled and transmitted to a transmission line.

摘要翻译： 通过使从脉冲光源输出的脉冲波形成三阶以上的超高斯脉冲，并输入到频谱扩展装置，构成脉冲序列。 频谱扩展装置用非线性介质拓宽脉冲序列的频谱。 调制器阵列从扩展频谱中提取纵模分量，并用调制数据调制提取的纵模分量。 最后，调制的纵向模式分量被耦合并传输到传输线。

公开(公告)号：US20050141073A1

公开(公告)日：2005-06-30

申请号：US10827328

申请日：2004-04-20

申请人： Yutaka Takita ,  Shigeki Watanabe ,  Fumio Futami

发明人： Yutaka Takita ,  Shigeki Watanabe ,  Fumio Futami

IPC分类号： G02F1/03 ,  G02F1/07 ,  H03K3/42 ,  H04B10/12

CPC分类号： H04B10/508 ,  G02F1/0311 ,  G02F2203/50

摘要： An apparatus and method generating an optical pulse of picosecond class (having a high duty ratio), which accurately and stably operates at an arbitrary repetition frequency, has a high OSNR, and is not restricted by an RF modulation frequency, are provided. New modulation spectrum components are generated by performing phase modulation for light output from a single wavelength laser light source with an optical phase modulator. The phases of the modulation spectrum components are aligned by a phase adjuster, so that a pulse wave in a time domain is generated.

摘要翻译： 提供了以任意重复频率精确稳定地操作的皮秒级（具有高占空比）的光脉冲的装置和方法具有高OSNR，并且不受RF调制频率的限制。 通过对具有光相位调制器的单个波长激光光源的光输出执行相位调制来产生新的调制频谱分量。 调制频谱分量的相位由相位调整器对准，从而产生时域中的脉冲波。

公开(公告)号：US08190032B2

公开(公告)日：2012-05-29

申请号：US12340177

申请日：2008-12-19

申请人： Fumio Futami ,  Shigeki Watanabe

发明人： Fumio Futami ,  Shigeki Watanabe

IPC分类号： H04B10/00

CPC分类号： H04J14/08 ,  H04B10/29

摘要： An O/E conversion element converts an input NRZ optical signal into an electric signal. A clock recovery circuit recovers a clock signal from the electric signal obtained by the O/E conversion element. A phase modulator applies phase modulation to the NRZ optical signal, using the recovered clock signal. An intensity modulator applies intensity modulation to the NRZ optical signal, using the recovered clock signal. A dispersion medium compensates for a frequency chirp of an optical signal output from the intensity modulator.

摘要翻译： O / E转换元件将输入NRZ光信号转换为电信号。 时钟恢复电路从O / E转换元件获得的电信号中恢复时钟信号。 相位调制器使用恢复的时钟信号向NRZ光信号施加相位调制。 强度调制器使用恢复的时钟信号向NRZ光信号施加强度调制。 分散介质补偿从强度调制器输出的光信号的频率啁啾。

公开(公告)号：US20110176202A1

公开(公告)日：2011-07-21

申请号：US12987602

申请日：2011-01-10

申请人： Tomoyuki KATO ,  Fumio Futami ,  Shigeki Watanabe

发明人： Tomoyuki KATO ,  Fumio Futami ,  Shigeki Watanabe

IPC分类号： H01S3/13 ,  H01S3/091 ,  H01S3/067

CPC分类号： H01S3/0057 ,  G02F1/395 ,  G02F2001/392 ,  G02F2201/16

摘要： An optical amplifier amplifies signal light and includes a pump light source that outputs pump light of a wavelength different from that of the signal light; a combining unit that combines the signal light and the pump light output by the pump light source, to output combined light; an amplifying unit that has non-linear optical media that transmit the combined light to amplify the signal light, the amplifying unit further removing, in the non-linear optical media, idler light generated from the signal light and the pump light, and outputting light that results; and an extraction filter that extracts the signal light from the light output by the amplifying unit.

摘要翻译： 光放大器放大信号光，并包括泵浦光源，其输出与信号光不同波长的泵浦光; 组合单元，其组合由泵浦光源输出的信号光和泵浦光，以输出组合光; 放大单元，其具有透射组合的光以放大信号光的非线性光学介质，放大单元进一步在非线性光学介质中去除从信号光和泵浦光产生的空转光，并输出光 结果; 以及提取滤波器，其提取由放大单元输出的光的信号光。

公开(公告)号：US07835643B2

公开(公告)日：2010-11-16

申请号：US11136489

申请日：2005-05-25

申请人： Fumio Futami ,  Shigeki Watanabe

发明人： Fumio Futami ,  Shigeki Watanabe

IPC分类号： H04B10/08 ,  H04B17/00 ,  G01N21/00

CPC分类号： G01J11/00

摘要： The present invention relates an optical waveform measuring apparatus designed to eliminate the polarization dependency of an intensity correlation signal without a polarization diversity arrangement. The apparatus comprises a sampling light outputting unit for outputting a sampling light pulse to sample light under measurement, a sampling result outputting unit for developing a nonlinear optical effect stemming from the light under measurement and the sampling light pulse from the sampling light outputting unit to output light corresponding to a result of the sampling of the light under measurement, and a polarization state control unit for, before the start of the measurement of the light under measurement, carrying out control on the basis of a power level of the light from the sampling result outputting unit so that a polarization state of the light under measurement, which is to be inputted to the sampling light output unit, is placed into a predetermined state.

摘要翻译： 本发明涉及一种光波形测量装置，其设计成消除了没有极化分集布置的强度相关信号的偏振依赖性。 该装置包括：采样光输出单元，用于输出采样光脉冲以采样测量光;采样结果输出单元，用于显示源自测量光的非线性光学效应;以及采样光脉冲，从采样光输出单元输出 对应于测量光采样结果的光和偏光状态控制单元，用于在开始测量光之前，根据来自采样的光的功率电平进行控制 结果输出单元，使得要输入到采样光输出单元的测量光的偏振状态被置于预定状态。

公开(公告)号：US07623792B2

公开(公告)日：2009-11-24

申请号：US11197260

申请日：2005-08-05

申请人： Fumio Futami ,  Shigeki Watanabe

发明人： Fumio Futami ,  Shigeki Watanabe

IPC分类号： H04B10/00

CPC分类号： H04L7/0075 ,  H04J14/08

摘要： A clock extracting apparatus arranges bit intervals of a signal light train incident on a signal light processing section to have uneven periods, makes bit intervals between a predetermined signal light and signal lights adjacent to the predetermined signal light to be longer than a switching time of an electro-optical gate, selectively demultiplexes the predetermined signal light using the electro-optical gate, and extracts a clock synchronized with the signal light train from the demultiplexed signal light. Thus, it becomes possible to extract a clock synchronized with an ultra-high speed from a signal light train.

摘要翻译： 时钟提取装置将入射到信号光处理部分上的信号光列的位间隔设置为具有不均匀周期，使预定信号光与预定信号光相邻的信号光之间的位间隔比一个 电光栅，使用电光栅选择性地解复用预定的信号光，并从解复用的信号光中提取与信号光列同步的时钟。 因此，可以从信号光列提取与超高速同步的时钟。

公开(公告)号：US20060093375A1

公开(公告)日：2006-05-04

申请号：US11197260

申请日：2005-08-05

申请人： Fumio Futami ,  Shigeki Watanabe

发明人： Fumio Futami ,  Shigeki Watanabe

IPC分类号： H04B10/00

CPC分类号： H04L7/0075 ,  H04J14/08

摘要： A clock extracting apparatus of the present invention arranges bit intervals of a signal light train incident on a signal light processing section at periodically uneven, makes bit intervals between a predetermined signal light and signal lights adjacent to the predetermined signal light to be longer than a switching time of an electro-optical gate, selectively demultiplexes the predetermined signal light using the electro-optical gate, and extracts a dock synchronized with the signal light train from the demultiplexed signal light. Thus, it becomes possible to easily extract a clock synchronized with an ultra-high speed signal light train.

摘要翻译： 本发明的时钟提取装置将入射到信号光处理部分的信号光列的位间隔周期性地不均匀地布置，使预定信号光和与预定信号光相邻的信号光之间的位间隔比开关长 电光栅的时间，使用电光栅选择性地解复用预定信号光，并从解复用的信号光中提取与信号光列同步的坞。 因此，可以容易地提取与超高速信号光列同步的时钟。

公开(公告)号：US07706649B2

公开(公告)日：2010-04-27

申请号：US12261261

申请日：2008-10-30

申请人： Fumio Futami ,  Shigeki Watanabe

发明人： Fumio Futami ,  Shigeki Watanabe

IPC分类号： G02B6/00 ,  G02B6/35

CPC分类号： H04J14/083 ,  H04B10/299 ,  H04J14/06

摘要： An optical processing device includes: a light source that outputs second light having a first polarization state or a second polarization state in synchronization with the pulse timing of the pulse of first light; a first nonlinear medium that controls the polarization state of the first light pulse in accordance with the polarization state of the second light pulse, using a nonlinear effect; and a separator that outputs the first light pulse from the first nonlinear medium selectively to a first output path or a second output path in accordance with the polarization state controlled by the first nonlinear medium. In this device, the first nonlinear medium uses the nonlinear effect to compensate the level of each first light pulse output selectively to the first output path or the second output path by the separator, with each first light pulse receiving the energy of the second light pulse.

摘要翻译： 光学处理装置包括：与第一光的脉冲的脉冲定时同步地输出具有第一偏振状态或第二偏振状态的第二光的光源; 第一非线性介质，使用非线性效应根据第二光脉冲的偏振状态来控制第一光脉冲的偏振状态; 以及分离器，其根据由第一非线性介质控制的偏振状态，将第一非线性介质的第一光脉冲选择性地输出到第一输出路径或第二输出路径。 在该装置中，第一非线性介质使用非线性效应来补偿由分离器选择性地输出到第一输出路径或第二输出路径的每个第一光脉冲的电平，其中每个第一光脉冲接收第二光脉冲的能量 。