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1. 发明授权

US5982530A Apparatus for driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line 有权
标题翻译：用于驱动光调制器以测量和补偿光传输线中的色散的装置
公开(公告)号：US5982530A
公开(公告)日：1999-11-09
申请号：US245920
申请日：1999-02-08
申请人： Yuichi Akiyama , George Ishikawa , Hiroki Ooi , Shigeki Watanabe
发明人： Yuichi Akiyama , George Ishikawa , Hiroki Ooi , Shigeki Watanabe
IPC分类号： G02F1/015 , G01M11/02 , G02F1/01 , G02F1/025 , G02F1/03 , G02F1/035 , H04B10/07 , H04B10/2507 , H04B10/2525 , H04B10/508 , H04B10/516 , H04B10/524 , H04B10/556 , H04B10/564 , H04B10/572 , H04B10/588 , H04B10/61
CPC分类号： H04B10/2525 , G02F1/0327 , H04B10/25137 , G02F2001/212 , G02F2203/25 , G02F2203/26 , H04B2210/252 , H04B2210/254
摘要： An apparatus includes a driving voltage generator that generates a pulse driving voltage having a rising edge and a decaying edge. An optical modulator produces a first pulse at the rising edge of the pulse driving voltage and a second pulse at the decaying edge of the pulse driving voltage. Therefore, the first and second pulses are both produced from a single driving pulse voltage. The frequency of the first pulse is determined by the slope of the rising edge of the pulse driving voltage and the frequency of the second pulse is determined by the slope of the decaying edge of the pulse driving voltage. The first and second pulses are transmitted through a transmission line. A detection device detects the first and second pulses after being transmitted through the transmission line. A processor then determines the amount of dispersion in the transmission line by comparing the time interval between the detected first and second pulses to the time interval of the first and second pulses before being transmitted. Generally, the optical modulator is a Mach-Zehnder modulator driven with a pulse driving voltage exceeding the half-wavelength voltage of the modulator.
摘要翻译：一种装置包括产生具有上升沿和衰减沿的脉冲驱动电压的驱动电压发生器。光调制器在脉冲驱动电压的上升沿产生第一脉冲，在脉冲驱动电压的衰减沿产生第二脉冲。因此，第一和第二脉冲都是从单个驱动脉冲电压产生的。第一脉冲的频率由脉冲驱动电压的上升沿的斜率决定，第二脉冲的频率由脉冲驱动电压的衰减沿的斜率决定。第一和第二脉冲通过传输线传输。检测装置在通过传输线传输之后检测第一和第二脉冲。然后处理器通过将检测到的第一和第二脉冲之间的时间间隔与发送之前的第一和第二脉冲的时间间隔进行比较来确定传输线中的色散量。通常，光调制器是脉冲驱动电压超过调制器的半波长电压驱动的马赫 - 曾德调制器。

2. 发明授权

US06262828B1 Method and apparatus of driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line 有权
标题翻译：驱动光调制器以测量和补偿光传输线中的色散的方法和装置
公开(公告)号：US06262828B1
公开(公告)日：2001-07-17
申请号：US09257497
申请日：1999-02-25
申请人： Yuichi Akiyama , George Ishikawa , Hiroki Ooi , Shigeki Watanabe
发明人： Yuichi Akiyama , George Ishikawa , Hiroki Ooi , Shigeki Watanabe
IPC分类号： G02F103
CPC分类号： H04B10/2525 , G02F1/0327 , G02F2001/212 , G02F2203/25 , G02F2203/26 , H04B10/25137 , H04B2210/252 , H04B2210/254
摘要： An apparatus includes a driving voltage generator that generates a pulse driving voltage having a rising edge and a decaying edge. An optical modulator produces a first pulse at the rising edge of the pulse driving voltage and a second pulse at the decaying edge of the pulse driving voltage. Therefore, the first and second pulses are both produced from a single driving pulse voltage. The frequency of the first pulse is determined by the slope of the rising edge of the pulse driving voltage and the frequency of the second pulse is determined by the slope of the decaying edge of the pulse driving voltage. The first and second pulses are transmitted through a transmission line. A detection device detects the first and second pulses after being transmitted through the transmission line. A processor then determines the amount of dispersion in the transmission line by comparing the time interval between the detected first and second pulses to the time interval of the first and second pulses before being transmitted. Generally, the optical modulator is a Mach-Zehnder modulator driven with a pulse driving voltage exceeding the half-wavelength voltage of the modulator.
摘要翻译：一种装置包括产生具有上升沿和衰减沿的脉冲驱动电压的驱动电压发生器。光调制器在脉冲驱动电压的上升沿产生第一脉冲，在脉冲驱动电压的衰减沿产生第二脉冲。因此，第一和第二脉冲都是从单个驱动脉冲电压产生的。第一脉冲的频率由脉冲驱动电压的上升沿的斜率决定，第二脉冲的频率由脉冲驱动电压的衰减沿的斜率决定。第一和第二脉冲通过传输线传输。检测装置在通过传输线传输之后检测第一和第二脉冲。然后处理器通过将检测到的第一和第二脉冲之间的时间间隔与发送之前的第一和第二脉冲的时间间隔进行比较来确定传输线中的色散量。通常，光调制器是脉冲驱动电压超过调制器的半波长电压驱动的马赫 - 曾德调制器。

3. 发明授权

US5973816A Method and apparatus of driving an optical modulator to measure, and compensation for dispersion in an optical transmission line 失效
标题翻译：驱动光调制器以测量和补偿光传输线中色散的方法和装置
公开(公告)号：US5973816A
公开(公告)日：1999-10-26
申请号：US45121
申请日：1998-03-20
申请人： Yuichi Akiyama , George Ishikawa , Hiroki Ooi , Shigeki Watanabe
发明人： Yuichi Akiyama , George Ishikawa , Hiroki Ooi , Shigeki Watanabe
IPC分类号： G02F1/015 , G01M11/02 , G02F1/01 , G02F1/025 , G02F1/03 , G02F1/035 , H04B10/07 , H04B10/2507 , H04B10/2525 , H04B10/508 , H04B10/516 , H04B10/524 , H04B10/556 , H04B10/564 , H04B10/572 , H04B10/588 , H04B10/61 , G02B26/00
CPC分类号： H04B10/2525 , G02F1/0327 , H04B10/25137 , G02F2001/212 , G02F2203/25 , G02F2203/26 , H04B2210/252 , H04B2210/254
摘要： An apparatus includes a driving voltage generator that generates a pulse driving voltage having a rising edge and a decaying edge. An optical modulator produces a first pulse at the rising edge of the pulse driving voltage and a second pulse at the decaying edge of the pulse driving voltage. Therefore, the first and second pulses are both produced from a single driving pulse voltage. The frequency of the first pulse is determined by the slope of the rising edge of the pulse driving voltage and the frequency of the second pulse is determined by the slope of the decaying edge of the pulse driving voltage. The first and second pulses are transmitted through a transmission line. A detection device detects the first and second pulses after being transmitted through the transmission line. A processor then determines the amount of dispersion in the transmission line by comparing the time interval between the detected first and second pulses to the time interval of the first and second pulses before being transmitted. Generally, the optical modulator is a Mach-Zehnder modulator driven with a pulse driving voltage exceeding the half-wavelength voltage of the modulator.
摘要翻译：一种装置包括产生具有上升沿和衰减沿的脉冲驱动电压的驱动电压发生器。光调制器在脉冲驱动电压的上升沿产生第一脉冲，在脉冲驱动电压的衰减沿产生第二脉冲。因此，第一和第二脉冲都是从单个驱动脉冲电压产生的。第一脉冲的频率由脉冲驱动电压的上升沿的斜率决定，第二脉冲的频率由脉冲驱动电压的衰减沿的斜率决定。第一和第二脉冲通过传输线传输。检测装置在通过传输线传输之后检测第一和第二脉冲。然后处理器通过将检测到的第一和第二脉冲之间的时间间隔与发送之前的第一和第二脉冲的时间间隔进行比较来确定传输线中的色散量。通常，光调制器是脉冲驱动电压超过调制器的半波长电压驱动的马赫 - 曾德调制器。

4. 发明授权

US5253097A Demodulator and a polarization diversity receiver for coherent optical communication provided with the demodulator 失效
标题翻译：解调器和与解调器一起提供的相干光通信的偏振分集接收器
公开(公告)号：US5253097A
公开(公告)日：1993-10-12
申请号：US730002
申请日：1991-07-15
申请人： Takao Naito , Terumi Chikama , Shigeki Watanabe , Tetsuya Kiyonaga , Hiroshi Nakamoto , George Ishikawa
发明人： Takao Naito , Terumi Chikama , Shigeki Watanabe , Tetsuya Kiyonaga , Hiroshi Nakamoto , George Ishikawa
IPC分类号： H04B10/61 , H04B7/10 , H04B10/07 , H04B10/2507 , H04B10/516 , H04B10/556 , H04B10/564 , H04B10/572 , H04L27/227 , H04B10/06
CPC分类号： H04B10/61 , H04B10/614 , H04B10/64
摘要： A demodulator comprising an OR/NOR circuit, an exclusive OR/NOR circuit, and a delay circuit is disclosed as that capable of being suitably formed into a monolithic IC. Also, a polarization diversity receiver for coherent optical communication using the above demodulator as its constituent is disclosed as that having a smaller number of variable gain amplifiers and accordingly having the controlling circuit made simpler in structure.

5. 发明授权

US08983296B2 Optical signal-processing apparatus, receiving apparatus, and optical network system 有权
标题翻译：光信号处理装置，接收装置和光网络系统
公开(公告)号：US08983296B2
公开(公告)日：2015-03-17
申请号：US13431710
申请日：2012-03-27
申请人： Shigeki Watanabe
发明人： Shigeki Watanabe
IPC分类号： H04B10/00 , H04B10/07 , H04J14/02 , G02F1/39
CPC分类号： H04B10/541 , G02F1/395 , G02F2001/392 , H04B10/07 , H04B10/0773 , H04B10/299 , H04B10/616 , H04B2210/074 , H04J14/02 , H04J14/0221 , H04J14/0227 , H04J14/0275 , H04J14/0276
摘要： An optical modulator combines and inputs a signal light propagating through the optical network and a control light having information concerning the optical network to a nonlinear optical medium. The optical modulator modulates the signal light according to changes in intensity of the control light, in the nonlinear optical medium.
摘要翻译：光调制器将通过光网络传播的信号光和具有关于光网络的信息的控制光组合并输入到非线性光学介质。在非线性光学介质中，光调制器根据控制光强度的变化调制信号光。

6. 发明授权

US08970946B2 Optical signal processing apparatus, optical receiving apparatus, and optical relay apparatus 有权
公开(公告)号：US08970946B2
公开(公告)日：2015-03-03
申请号：US13173230
申请日：2011-06-30
申请人： Shigeki Watanabe
发明人： Shigeki Watanabe
IPC分类号： H04B10/17 , H04B10/299 , G02F1/39 , H04B10/12 , G02F1/35 , H01S3/067 , H01S3/10
CPC分类号： H04B10/299 , G02F1/3536 , G02F1/395 , G02F2001/392 , H01S3/06754 , H01S3/10015 , H01S3/10061
摘要： An optical signal processing apparatus includes an input unit to which signal light is input; a wave coupling unit that couples the signal light from the input unit and pump light having a waveform different from that of the signal light; a first nonlinear optical medium that transmits light coupled by the wave coupling unit, the light being the signal light and the pump light; a dispersion medium that transmits the light that has been transmitted through the first nonlinear optical medium; and a second nonlinear optical medium that transmits the light that has been transmitted through the dispersion medium.

7. 发明申请

US20130051803A1 OPTICAL MULTIPLEXING APPARATUS AND OPTICAL NETWORK SYSTEM 审中-公开
标题翻译：光学多路复用设备和光网络系统
公开(公告)号：US20130051803A1
公开(公告)日：2013-02-28
申请号：US13562703
申请日：2012-07-31
申请人： Tomoyuki Kato , Shigeki Watanabe
发明人： Tomoyuki Kato , Shigeki Watanabe
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H04J14/0254 , H04J14/0276 , H04J14/0298
摘要： There is provided an optical multiplexing apparatus including an extraction unit configured to extract a pilot signal multiplexed on light propagated on a transmission line, a generator configured to generate an optical subcarrier modulated signal based on a data signal to be transmitted on the transmission line and the pilot signal extracted by the extraction unit, a multiplexer configured to multiplex the optical subcarrier modulated signal generated by the generator with carrier light in order to multiplex the data signal on the carrier light propagated on the transmission line, and a nonlinear optical medium which is provided on the transmission line and on which the carrier light multiplexed by the multiplexer is incident.
摘要翻译：提供了一种光复用装置，包括：提取单元，被配置为提取在传输线上传播的光复用的导频信号;发生器，被配置为基于要在传输线上传输的数据信号生成光副载波调制信号，由所述提取单元提取的导频信号，多路复用器，被配置为将由发生器产生的光副载波调制信号与载波光复用，以便复用传输线上传播的载波上的数据信号，以及提供的非线性光介质并且多路复用器多路复用的载波光入射到传输线上。

8. 发明授权

US08351110B2 Optical-signal processing apparatus 有权
标题翻译：光信号处理装置
公开(公告)号：US08351110B2
公开(公告)日：2013-01-08
申请号：US12659182
申请日：2010-02-26
申请人： Shigeki Watanabe
发明人： Shigeki Watanabe
IPC分类号： H04B10/17 , G02F1/365 , H04B10/12
CPC分类号： G02F1/39 , G02F1/3536 , G02F1/395 , G02F2001/392 , G02F2201/58 , G02F2203/26 , H04B10/504 , H04B10/541
摘要： An optical-signal processing apparatus includes a polarizer that is provided at an output terminal of an optical fiber, and polarization control units that adjust a first excitation light and a second excitation light input to the optical fiber. The polarization control units adjust polarization states of the first excitation light and the second excitation light so that, when the first excitation light and the second excitation light are input to the polarizer, polarization directions of the first excitation light and the second excitation light are orthogonal to each other, and angular difference between the polarization direction of the first excitation light and the polarization direction of the second excitation light, measured against the polarization main axis of the polarizer, is equal to or smaller than a threshold value.
摘要翻译：光信号处理装置包括设置在光纤的输出端的偏振器和调节第一激发光和输入到光纤的第二激发光的偏振控制单元。偏振控制单元调节第一激发光和第二激发光的偏振状态，使得当第一激发光和第二激发光被输入到偏振器时，第一激发光和第二激发光的偏振方向是正交的并且相对于偏振器的偏振主轴测量的第一激发光的偏振方向与第二激发光的偏振方向之间的角度差等于或小于阈值。

9. 发明授权

US08275264B2 Optical waveform controlling apparatus 有权
标题翻译：光波形控制装置
公开(公告)号：US08275264B2
公开(公告)日：2012-09-25
申请号：US12076323
申请日：2008-03-17
申请人： Shigeki Watanabe
发明人： Shigeki Watanabe
IPC分类号： H04J14/02
CPC分类号： H04B10/299
摘要： According to an aspect of an embodiment, an apparatus for controlling optical waveform, comprises: an input port for inputting a signal light having a modulating frequency and a signal light power; a pump light generator generating pulsed pump light having a frequency higher than the modulating frequency of the signal light and a pulsed pump light power; a nonlinear optical medium for transmitting the signal light from the input port and the pulsed pump light, the nonlinear optical medium having a gain of the signal light based on a nonlinear optical effect; and a power adjustor for adjusting a gain of the signal light saturates in the nonlinear optical medium by a nonlinear optical effect by adjusting at least one of the signal light power or the pulsed pump light power.
摘要翻译：根据实施例的一个方面，一种用于控制光波形的装置，包括：用于输入具有调制频率和信号光功率的信号光的输入端口; 产生具有高于信号光的调制频率的频率和脉冲泵浦光功率的脉冲泵浦光的泵浦光发生器; 用于传输来自输入端口的信号光和脉冲泵浦光的非线性光学介质，所述非线性光学介质基于非线性光学效应具有所述信号光的增益; 以及功率调节器，用于通过调节信号光功率或脉冲泵浦光功率中的至少一个，通过非线性光学效应来调节信号光的增益饱和非线性光学介质。

10. 发明授权

US08190032B2 Optical signal processing apparatus 有权
标题翻译：光信号处理装置
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。

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