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1. 发明授权

US08855498B2 Skew suppression method and optical transmission system 有权
标题翻译：偏斜抑制方法和光传输系统
公开(公告)号：US08855498B2
公开(公告)日：2014-10-07
申请号：US13369365
申请日：2012-02-09
申请人： Toshiki Tanaka , Masato Nishihara
发明人： Toshiki Tanaka , Masato Nishihara
IPC分类号： H04B10/00 , H04B10/08 , H04B10/50
CPC分类号： H04B10/5055 , H04B2210/254
摘要： A method for suppressing a skew between a first channel and a second channel in an optical transmission system having a transmitter that transmits an optical signal with the first channel and the second channel and a receiver that receives the optical signal, the method includes: controlling dispersion added to the optical signal to be larger than a specified amount; and controlling a delay time of at least one of the first channel and the second channel in the receiver based on a quality of the optical signal monitored in the receiver to suppress the skew between the first channel and the second channel in the receiver.
摘要翻译：一种用于抑制具有发送光信号与第一信道和第二信道的发射机的光传输系统中的第一信道和第二信道之间的偏斜的方法以及接收光信号的接收机，该方法包括：控制色散添加到光信号大于指定量; 以及基于在接收机中监视的光信号的质量来控制接收机中的第一信道和第二信道中的至少一个的延迟时间，以抑制接收机中第一信道和第二信道之间的偏斜。

2. 发明申请

US20120148235A1 CONTROL CIRCUIT, COMMUNICATION SYSTEM, AND CONTROL METHOD 审中-公开
标题翻译：控制电路，通信系统和控制方法
公开(公告)号：US20120148235A1
公开(公告)日：2012-06-14
申请号：US13315560
申请日：2011-12-09
申请人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
发明人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
IPC分类号： H04B10/00 , H04J14/02 , H04B10/06 , H04B10/08
CPC分类号： H04B10/07951 , H04B10/572 , H04B10/612 , H04B10/613 , H04B10/614 , H04B10/615 , H04B10/616 , H04B10/6161 , H04J14/0212 , H04J14/0256 , H04J14/0271 , H04J14/0279
摘要： A communication system includes a transmitter, a receiver device, and a control circuit. The transmitter transmits an optical signal. The receiver device receives the optical signal. The control circuit reduces a power consumption of the receiver device based on an accumulated chromatic dispersion of the received optical signal. The receiver device includes a receiver, an analog/digital converter, and a digital signal processor. The receiver extracts a signal indicating a complex amplitude of the optical signal. The analog/digital converter converts the signal indicating the complex amplitude into a digital signal. The digital signal processor digitally-processes the digital signal.
摘要翻译：通信系统包括发射机，接收机设备和控制电路。发射机发射光信号。接收机设备接收光信号。控制电路基于所接收的光信号的累积色散来降低接收机设备的功耗。接收机设备包括接收机，模拟/数字转换器和数字信号处理器。接收机提取表示光信号的复振幅的信号。模拟/数字转换器将指示复振幅的信号转换为数字信号。数字信号处理器对数字信号进行数字处理。

3. 发明申请

US20120237212A1 OPTICAL NETWORK SYSTEM 有权
标题翻译：光网络系统
公开(公告)号：US20120237212A1
公开(公告)日：2012-09-20
申请号：US13420043
申请日：2012-03-14
申请人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
发明人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
IPC分类号： H04J14/02 , H04B10/08
CPC分类号： H04J14/0257 , H04J14/0204 , H04J14/0212 , H04J14/0213 , H04J14/0221 , H04J14/0256 , H04J14/0283
摘要： There is provided an optical network system in which optical signals modulated by each of at least two modulation methods are wavelength-division-multiplexed and transferred, including: an optical transmitter configured to transmit first optical signals modulated by each of at least two modulation methods; an add-drop multiplexer configured to drop second optical signals from wavelength-division-multiplexed optical signals transferred in the optical network system, and add the first optical signals to the wavelength-division-multiplexed optical signals; an optical receiver configured to demodulate the second optical signals corresponding to each of at least two modulation methods; and a controller configured to control wavelengths of the first optical signals, the second optical signals and the wavelength-division-multiplexed optical signals so as to rearrange wavelengths of the first optical signals, the second optical signals and the wavelength-division-multiplexed optical signals so that optical signals modulated by a same modulation method are placed on an adjacent wavelength.
摘要翻译：提供了一种光网络系统，其中由至少两种调制方法中的每一种调制的光信号被波分复用和传送，包括：光发射机，被配置为发送由至少两种调制方法中的每一种调制的第一光信号; 一种分插复用器，被配置为从光网络系统中传输的波分复用光信号中丢弃第二光信号，并将第一光信号加到波分复用光信号上; 光接收机，被配置为解调对应于至少两种调制方法中的每一种的第二光信号; 以及控制器，被配置为控制第一光信号的波长，第二光信号和波分复用光信号，以便重新排列第一光信号的波长，第二光信号和波分复用光信号使得通过相同调制方法调制的光信号被放置在相邻的波长上。

4. 发明授权

US08565616B2 Polarized-wave-multiplexing optical transmitter and control method of polarized-wave-multiplexed optical signal 有权
标题翻译：偏振波复用光信号的偏振波复用光信号的控制方法
公开(公告)号：US08565616B2
公开(公告)日：2013-10-22
申请号：US13028677
申请日：2011-02-16
申请人： Toshiki Tanaka , Yuichi Akiyama , Masato Nishihara
发明人： Toshiki Tanaka , Yuichi Akiyama , Masato Nishihara
IPC分类号： H04B10/04
CPC分类号： H04B10/50575 , H04B10/564 , H04J14/06
摘要： A polarized-wave-multiplexing optical transmitter including: an optical combiner generating a polarized-wave-multiplexed optical signal by polarized-wave-multiplexing a first optical modulation signal and a second optical modulation signal; an optical power fluctuation portion fluctuating optical power of the first optical modulation signal and the second optical modulation signal periodically; a total-optical-power detection portion detecting fluctuation amount of total optical power of the polarized-wave-multiplexed optical signal; and an optical power controller reducing an optical power difference between the first optical modulation signal and the second optical modulation signal based on detection result of the total-optical-power detection portion.
摘要翻译：一种偏振波复用光发送器，包括：光合成器，通过对第一光调制信号和第二光调制信号进行极化波多路复用产生偏振波复用光信号; 光功率波动部分周期性地波动第一光调制信号和第二光调制信号的光功率; 总光功率检测部分，检测偏振波复用光信号的总光功率的波动量; 以及光功率控制器，其基于所述总光功率检测部的检测结果，降低所述第一光调制信号与所述第二光调制信号之间的光功率差。

5. 发明申请

US20080187324A1 OPTICAL TRANSMITTER AND CONTROL METHOD THEREFOR 有权
标题翻译：光发射机及其控制方法
公开(公告)号：US20080187324A1
公开(公告)日：2008-08-07
申请号：US12013857
申请日：2008-01-14
申请人： Yuichi AKIYAMA , Hideyuki Miyata , Toshiki Tanaka , Masato Nishihara
发明人： Yuichi AKIYAMA , Hideyuki Miyata , Toshiki Tanaka , Masato Nishihara
IPC分类号： H04B10/04
CPC分类号： H04B10/5053 , H04B10/50 , H04B10/50575
摘要： The disclosed optical transmitter and control method include performing phase modulation of a light propagating through a corresponding optical path in accordance with a data signal, supplying bias voltages for regulating an operating point of each of phase modulation performed, imparting a predetermined phase difference, supplying bias voltages for phase difference regulation and coupling lights output from the corresponding optical paths. The optical transmitter includes superimposing a pilot signal on either one of bias voltages where the pilot signal has a frequency lower than a frequency of a bit rate of the data signal, and performing a feedback control in accordance with a result of monitoring.
摘要翻译：所公开的光发射机和控制方法包括根据数据信号执行通过对应的光路传播的光的相位调制，提供用于调节执行的每个相位调制的工作点的偏置电压，赋予预定的相位差，提供偏置用于从相应光路输出的相位差调节和耦合光的电压。光发射机包括将导频信号叠加在导频信号的频率低于数据信号的比特率的频率的偏置电压中的任一个上，并且根据监视的结果进行反馈控制。

6. 发明授权

US08565617B2 Optical device, optical modulation method, and optical transmitter 有权
公开(公告)号：US08565617B2
公开(公告)日：2013-10-22
申请号：US12219860
申请日：2008-07-29
申请人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
发明人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
IPC分类号： H04B10/04
CPC分类号： H04B10/5561 , H04B10/5051 , H04B10/5053 , H04B10/5057 , H04B10/5162 , H04B10/58
摘要： An optical modulation device including waveform shapers that waveform-shape input data signals in synchronism with a rising or falling timing based on comparison with a reference level of an input clock signal, a multi-level phase modulator that generates a multi-level-phase-modulated optical signal based on the data signals waveform-shaped by the plurality of waveform shapers, and outputs the generated optical signal, and a level ratio controller that varies a relative level ratio of the reference level to an amplitude level of the clock signal input to the waveform shapers, based on the optical signal output from the multi-level phase modulator.

7. 发明申请

US20120263456A1 SKEW SUPPRESSION METHOD AND OPTICAL TRANSMISSION SYSTEM 有权
标题翻译： SKEW抑制方法和光传输系统
公开(公告)号：US20120263456A1
公开(公告)日：2012-10-18
申请号：US13369365
申请日：2012-02-09
申请人： Toshiki Tanaka , Masato Nishihara
发明人： Toshiki Tanaka , Masato Nishihara
IPC分类号： H04B10/08 , H04B10/18
CPC分类号： H04B10/5055 , H04B2210/254
摘要： A method for suppressing a skew between a first channel and a second channel in an optical transmission system having a transmitter that transmits an optical signal with the first channel and the second channel and a receiver that receives the optical signal, the method includes: controlling dispersion added to the optical signal to be larger than a specified amount; and controlling a delay time of at least one of the first channel and the second channel in the receiver based on a quality of the optical signal monitored in the receiver to suppress the skew between the first channel and the second channel in the receiver.
摘要翻译：一种用于抑制具有发送光信号与第一信道和第二信道的发射机的光传输系统中的第一信道和第二信道之间的偏斜的方法以及接收光信号的接收机，该方法包括：控制色散添加到光信号大于指定量; 以及基于在接收机中监视的光信号的质量来控制接收机中的第一信道和第二信道中的至少一个的延迟时间，以抑制接收机中第一信道和第二信道之间的偏斜。

8. 发明申请

US20120050844A1 OPTICAL SIGNAL TRANSMISSION DEVICE, OPTICAL AMPLIFICATION DEVICE, OPTICAL ATTENUATION DEVICE AND OPTICAL SIGNAL TRANSMISSION METHOD 审中-公开
标题翻译：光信号传输装置，光放大装置，光衰减器件和光信号传输方法
公开(公告)号：US20120050844A1
公开(公告)日：2012-03-01
申请号：US13033786
申请日：2011-02-24
申请人： Masato Nishihara , Toshiki Tanaka
发明人： Masato Nishihara , Toshiki Tanaka
IPC分类号： H01S5/00 , H01S3/13 , H01S3/067
CPC分类号： H04B10/532 , H04B10/5053 , H04B10/5057 , H04B10/5059
摘要： A generation unit generates a polarization multiplexing signal in which two optical signals, each polarization of which is orthogonal to each other, are combined. A detector detects the powers of the two optical signals contained in the polarization multiplexing signal generated by the generation unit. An amplifier amplifies, according to each polarization of the two optical signals contained in the polarization multiplexing signal generated by the generation unit, the powers of the two optical signals. An controller controls a gain of the amplifier with respect to each polarization of the two optical signals so as to reduce difference in the powers of the two optical signals detected by the detector.
摘要翻译：一代单元产生偏振复用信号，其中两个光信号彼此正交的两个光信号被组合。检测器检测由生成单元生成的偏振复用信号中包含的两个光信号的功率。根据由生成单元生成的偏振复用信号中包含的两个光信号的各极化，放大器放大两个光信号的功率。控制器相对于两个光信号的每个偏振来控制放大器的增益，以便减少由检测器检测到的两个光信号的功率的差异。

9. 发明授权

US08073339B2 Optical device, optical modulation method, and optical transmitter 有权
公开(公告)号：US08073339B2
公开(公告)日：2011-12-06
申请号：US12219860
申请日：2008-07-29
申请人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
发明人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
IPC分类号： H04B10/04
摘要： An optical modulation device including waveform shapers that waveform-shape input data signals in synchronism with a rising or falling timing based on comparison with a reference level of an input clock signal, a multi-level phase modulator that generates a multi-level-phase-modulated optical signal based on the data signals waveform-shaped by the plurality of waveform shapers, and outputs the generated optical signal, and a level ratio controller that varies a relative level ratio of the reference level to an amplitude level of the clock signal input to the waveform shapers, based on the optical signal output from the multi-level phase modulator.

10. 发明申请

US20090041473A1 Optical device, optical modulation method, and optical transmitter 有权
标题翻译：光学装置，光学调制方法和光发射机
公开(公告)号：US20090041473A1
公开(公告)日：2009-02-12
申请号：US12219860
申请日：2008-07-29
申请人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
发明人： Masato Nishihara , Tomoo Takahara , Toshiki Tanaka
IPC分类号： H04B10/04
CPC分类号： H04B10/5561 , H04B10/5051 , H04B10/5053 , H04B10/5057 , H04B10/5162 , H04B10/58
摘要： An optical modulation device including waveform shapers that waveform-shape input data signals in synchronism with a rising or falling timing based on comparison with a reference level of an input clock signal, a multi-level phase modulator that generates a multi-level-phase-modulated optical signal based on the data signals waveform-shaped by the plurality of waveform shapers, and outputs the generated optical signal, and a level ratio controller that varies a relative level ratio of the reference level to an amplitude level of the clock signal input to the waveform shapers, based on the optical signal output from the multi-level phase modulator.
摘要翻译：一种光调制装置，包括：波形整形器，其基于与输入时钟信号的基准电平的比较，与上升或下降定时同步的波形输入数据信号，产生多电平相位调制器的多电平相位调制器，基于由多个波形整形器波形形成的数据信号的调制光信号，并输出所生成的光信号;以及电平比控制器，其将参考电平的相对电平比改变为输入到波形整形器，基于从多电平相位调制器输出的光信号。

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