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公开(公告)号：US20120243880A1
公开(公告)日：2012-09-27
申请号：US13413874
申请日：2012-03-07
CPC分类号： H04B10/506 , H01S5/005 , H01S5/0085 , H01S5/4087 , H04B10/548
摘要： Light output from a seed light source generation unit that outputs continuous light having a single frequency or a plurality of frequencies is input by a multi-wavelength light source to an optical circulation unit, and light having a plurality of frequencies that is frequency-synchronized with seed light output from the seed light source generation unit is generated. The optical circulation unit is provided with an optical frequency shifter to shift light frequencies, and includes a circulation circuit to return output from the optical frequency shifter to the input side. On a circulation path, an optical spectral shaper capable of adjusting an optical amount of attenuation for each frequency unit is provided so that optical amount of attenuations are adjusted, and thereby the number and the like of optical frequencies output from the optical circulation unit are changed.
摘要翻译： 从多光波长光源输入输出具有单一频率或多个频率的连续光的种子光源生成部的光输出到光循环装置，具有频率同步的多个频率的光 产生从种子光源生成单元输出的种子光。 光学循环单元设置有用于移动光频率的光学移频器，并且包括循环电路，以将输出从光学移频器返回到输入侧。 在循环路径上，设置能够调整每个频率单位的光衰减量的光谱整形器，从而调整光衰减量，从而使从光循环单元输出的光频数等变化 。
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公开(公告)号：US08849128B2
公开(公告)日：2014-09-30
申请号：US13413874
申请日：2012-03-07
CPC分类号： H04B10/506 , H01S5/005 , H01S5/0085 , H01S5/4087 , H04B10/548
摘要： Light output from a seed light source generation unit that outputs continuous light having a single frequency or a plurality of frequencies is input by a multi-wavelength light source to an optical circulation unit, and light having a plurality of frequencies that is frequency-synchronized with seed light output from the seed light source generation unit is generated. The optical circulation unit is provided with an optical frequency shifter to shift light frequencies, and includes a circulation circuit to return output from the optical frequency shifter to the input side. On a circulation path, an optical spectral shaper capable of adjusting an optical amount of attenuation for each frequency unit is provided so that optical amount of attenuations are adjusted, and thereby the number and the like of optical frequencies output from the optical circulation unit are changed.
摘要翻译： 从多光波长光源输入输出具有单一频率或多个频率的连续光的种子光源生成部的光输出到光循环装置，具有频率同步的多个频率的光 产生从种子光源生成单元输出的种子光。 光学循环单元设置有用于移动光频率的光学移频器，并且包括循环电路，以将输出从光学移频器返回到输入侧。 在循环路径上，设置能够调整每个频率单位的光衰减量的光谱整形器，从而调整光衰减量，从而使从光循环单元输出的光频数等变化 。
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公开(公告)号：US08818207B2
公开(公告)日：2014-08-26
申请号：US13347405
申请日：2012-01-10
申请人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
发明人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
IPC分类号： H04B10/04 , H04B10/50 , H04J14/02 , H04B10/532 , H04L5/12 , H04L5/00 , H04L27/26 , H04L27/20
CPC分类号： H04J14/026 , H04B10/506 , H04B10/532 , H04J14/0298 , H04L5/0008 , H04L5/12 , H04L27/2096 , H04L27/2637 , H04L27/2642 , H04L27/2697
摘要： A clock signal from a single reference clock is frequency converted, and the frequency-converted signal is input to an equal-interval-optical-frequency-comb generator and a modulator of an optical modulator. By varying the electric frequency of the clock signal input to the equal-interval-optical-frequency-comb generator, frequency intervals of a frequency comb to be generated can be varied, while by selectively employing a particular optical frequency from among the continuous light beams of the generated frequency comb, a frequency comb having unequal intervals can be generated. It is also possible to vary the modulation rate by varying the clock frequency of a driving signal to be input to the optical modulator. By using a clock signal of a single reference clock, the frequency intervals of the frequency comb and the variation of the modulation rate synchronize with each other.
摘要翻译： 来自单个参考时钟的时钟信号被频率转换，并且频率转换的信号被输入到等间隔光频率梳发生器和光调制器的调制器。 通过改变输入到等间隔光频梳发生器的时钟信号的电频，可以改变要产生的频率梳的频率间隔，同时通过选择性地使用来自连续光束中的特定光频 可以产生具有不等间隔的频率梳。 也可以通过改变要输入到光调制器的驱动信号的时钟频率来改变调制速率。 通过使用单个参考时钟的时钟信号，频率梳的频率间隔和调制速率的变化彼此同步。
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公开(公告)号：US20120230694A1
公开(公告)日：2012-09-13
申请号：US13347405
申请日：2012-01-10
申请人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
发明人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
IPC分类号： H04J14/02
CPC分类号： H04J14/026 , H04B10/506 , H04B10/532 , H04J14/0298 , H04L5/0008 , H04L5/12 , H04L27/2096 , H04L27/2637 , H04L27/2642 , H04L27/2697
摘要： A clock signal from a single reference clock is frequency converted, and the frequency-converted signal is input to an equal-interval-optical-frequency-comb generator and a modulator of an optical modulator. By varying the electric frequency of the clock signal input to the equal-interval-optical-frequency-comb generator, frequency intervals of a frequency comb to be generated can be varied, while by selectively employing a particular optical frequency from among the continuous light beams of the generated frequency comb, a frequency comb having unequal intervals can be generated. It is also possible to vary the modulation rate by varying the clock frequency of a driving signal to be input to the optical modulator. By using a clock signal of a single reference clock, the frequency intervals of the frequency comb and the variation of the modulation rate synchronize with each other.
摘要翻译： 来自单个参考时钟的时钟信号被频率转换，并且频率转换的信号被输入到等间隔光频率梳发生器和光调制器的调制器。 通过改变输入到等间隔光频梳发生器的时钟信号的电频，可以改变要产生的频率梳的频率间隔，同时通过选择性地使用来自连续光束中的特定光频 可以产生具有不等间隔的频率梳。 也可以通过改变要输入到光调制器的驱动信号的时钟频率来改变调制速率。 通过使用单个参考时钟的时钟信号，频率梳的频率间隔和调制速率的变化彼此同步。
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5.发明授权公开(公告)号：US08731411B2
公开(公告)日：2014-05-20
申请号：US13064567
申请日：2011-03-31
IPC分类号： H04B10/00
CPC分类号： H04B10/2572 , H04B10/61 , H04B10/611 , H04B10/614 , H04B10/6151 , H04B10/6163
摘要： A polarization fluctuation compensation device, when WDM light received by, for example, an optical reception device includes a polarization scrambled optical signal and a non-polarization scrambled optical signal, collects information related to whether optical signals having respective wavelengths are polarization scrambled, obtains a target value of control parameters which are different from each other, according to the speed of polarization fluctuations in the non-polarization scrambled optical signal based on the collected information, and performs reception processing of the non-polarization scrambled optical signal by using a control parameter set as the target value. As a result, an influence of fast polarization fluctuations generated resulting from an interaction between optical signals having respective wavelengths can be reliably compensated for, thereby enabling to realize excellent reception characteristics.
摘要翻译： 一种偏振波动补偿装置，当由例如光接收装置接收的WDM光包括偏振加密光信号和非偏振加扰光信号时，收集与具有各波长的光信号是否被偏振加密有关的信息，获得 根据所收集的信息，根据非偏振加扰光信号中的偏振波动速度，彼此不同的控制参数的目标值，并使用控制参数进行非偏振加扰光信号的接收处理 设为目标值。 结果，可以可靠地补偿由具有各个波长的光信号之间的相互作用产生的快速极化波动的影响，从而能够实现良好的接收特性。
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6.发明申请公开(公告)号：US20110249971A1
公开(公告)日：2011-10-13
申请号：US13064567
申请日：2011-03-31
IPC分类号： H04J14/06
CPC分类号： H04B10/2572 , H04B10/61 , H04B10/611 , H04B10/614 , H04B10/6151 , H04B10/6163
摘要： A polarization fluctuation compensation device, when WDM light received by, for example, an optical reception device includes a polarization scrambled optical signal and a non-polarization scrambled optical signal, collects information related to whether optical signals having respective wavelengths are polarization scrambled, obtains a target value of control parameters which are different from each other, according to the speed of polarization fluctuations in the non-polarization scrambled optical signal based on the collected information, and performs reception processing of the non-polarization scrambled optical signal by using a control parameter set as the target value. As a result, an influence of fast polarization fluctuations generated resulting from an interaction between optical signals having respective wavelengths can be reliably compensated for, thereby enabling to realize excellent reception characteristics.
摘要翻译： 一种偏振波动补偿装置，当由例如光接收装置接收的WDM光包括偏振加密光信号和非偏振加扰光信号时，收集与具有各波长的光信号是否被偏振加密有关的信息，获得 根据所收集的信息，根据非偏振加扰光信号中的偏振波动速度，彼此不同的控制参数的目标值，并使用控制参数进行非偏振加扰光信号的接收处理 设为目标值。 结果，可以可靠地补偿由具有各个波长的光信号之间的相互作用产生的快速极化波动的影响，从而能够实现良好的接收特性。
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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
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。
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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
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。
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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.
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10.发明授权公开(公告)号：US08145071B2
公开(公告)日：2012-03-27
申请号：US12230247
申请日：2008-08-26
申请人： Toshiki Tanaka , Yuichi Akiyama , Tomoo Takahara
发明人： Toshiki Tanaka , Yuichi Akiyama , Tomoo Takahara
CPC分类号： H04B10/6971 , H04B10/677
摘要： An optical receiving apparatus branches an optical signal, photo-electric-converts the branched signals, and compensates dispersion in each of the converted electrical signals. Electrical-dispersion compensators respectively compensate the dispersion in the electrical signals using a transversal filter having plural taps. A dispersion control unit controls the dispersion compensation amount for each of the electrical signals by adjusting tap coefficients of the transversal filter. A delay control unit controls the difference in the delay time of the electrical signals by adjusting the tap coefficients adjusted by the dispersion control unit. An identifying circuit identifies data in the optical signal based on each of the electrical signals that have been subjected to dispersion compensation by each of the electrical-dispersion compensators.
摘要翻译： 光接收装置分支光信号，对分支信号进行光电转换，并补偿每个转换的电信号中的色散。 电色散补偿器使用具有多个抽头的横向滤波器分别补偿电信号中的色散。 色散控制单元通过调整横向滤波器的抽头系数来控制每个电信号的色散补偿量。 延迟控制单元通过调整由色散控制单元调节的抽头系数来控制电信号的延迟时间的差异。 识别电路基于通过每个电色散补偿器进行色散补偿的每个电信号来识别光信号中的数据。
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