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公开(公告)号：US20090060508A1
公开(公告)日：2009-03-05
申请号：US12155262
申请日：2008-05-30
IPC分类号： H04J14/06
CPC分类号： H04J14/06 , H04B10/505 , H04B10/532 , H04B10/541 , H04B10/548 , H04B10/5561 , H04J14/08 , H04L5/04
摘要： A polarization multiplexing and transmitting apparatus generates polarization multiplexed light by multiplexing modulated signal components that having varying intensities and are in polarization states orthogonal to each other. The polarization multiplexing and transmitting apparatus includes a converting unit that converts light generated by a light source into signal components having a varying intensity synchronized with a clock signal input thereto and a varying intensity inversely synchronized with the clock signal, respectively; a modulating unit that modulates the signal components, respectively; and a polarization adjusting unit that orthogonalizes polarization states of the signal components.
摘要翻译： 偏振复用和发送装置通过对具有变化的强度并且处于彼此正交的偏振状态的调制信号分量进行多路复用来产生偏振复用光。 偏振复用和发送装置包括转换单元，其将由光源产生的光变换成具有与输入的时钟信号同步的变化强度的信号分量和与时钟信号反向同步的变化强度; 调制单元，分别调制信号分量; 以及使信号分量的偏振态正交化的偏振调整单元。
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公开(公告)号：US20110274430A1
公开(公告)日：2011-11-10
申请号：US13137024
申请日：2011-07-15
IPC分类号： H04J14/06
CPC分类号： H04B10/2572 , H04B10/532 , H04B10/5561
摘要： An optical transmission system, where in an optical transmitter a detection bit having a specific pattern set according to the number of bits to be transmitted within one symbol time, is imparted with respect to a transmission signal in which transmission information has been encoded according to a preset format, and an optical signal generated by modulating light according to the transmission signal is transmitted to a transmission line. In an optical receiver, logic inversion or bit swap of received data is detected and compensated by using the detection bit included in the received signal, a decoding process of the compensated received signal is executed. As a result, when an optical signal capable of transmitting multi-bit information within one symbol time is transferred, it is possible to realize excellent transmission characteristics, by reliably compensating an error in received data caused by the modulation format or the multiplex system of the optical signal.
摘要翻译： 一种光传输系统，其中在光发射机中，根据在一个符号时间内要发送的比特数的数量，具有特定模式集的检测比特，根据发送信号已被编码的发送信号 预设格式和根据发送信号调制光产生的光信号被发送到传输线。 在光接收机中，通过使用包含在接收信号中的检测位来检测和补偿接收数据的逻辑反转或位交换，执行经补偿的接收信号的解码处理。 结果，当在一个符号时间内能够发送多位信息的光信号被传送时，通过可靠地补偿由调制格式或多路复用系统引起的接收数据中的错误，可以实现优异的传输特性 光信号。
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13.发明申请MONITOR CIRCUIT FOR MONITORING PROPERTY OF OPTICAL FIBER TRANSMISSION LINE AND QUALITY OF OPTICAL SIGNAL 审中-公开用于监测光纤传输线性质的监控电路和光信号质量公开(公告)号：US20090214201A1
公开(公告)日：2009-08-27
申请号：US12236028
申请日：2008-09-23
IPC分类号： H04B10/08
CPC分类号： H04B10/6971 , H04B10/0795
摘要： An optical reception circuit generates optical electric field data by performing coherent reception of an optical signal transmitted via an optical fiber transmission line. An FIR filter filters the optical electric field data so that the optical signal is equalized. A quality monitor unit calculates the average value and the standard deviation value of the amplitude of the optical signal on the basis of the equalized optical electric field data, and further calculates an optical signal-to-noise ratio on the basis of the calculated values.
摘要翻译： 光接收电路通过对通过光纤传输线传输的光信号进行相干接收来产生光电场数据。 FIR滤波器对光电场数据进行滤波，使光信号相等。 质量监视器单元基于均衡的光电场数据计算光信号的幅度的平均值和标准偏差值，并且还基于计算值来计算光信噪比。
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14.发明授权Distortion compensator, optical receiver, distortion compensator and optical receiver controlling methods, and optical transmission system 有权失真补偿器，光接收机，失真补偿器和光接收机控制方法以及光传输系统公开(公告)号：US08447186B2
公开(公告)日：2013-05-21
申请号：US12543154
申请日：2009-08-18
IPC分类号： H04B10/12
CPC分类号： H04J14/06 , H03F3/08 , H04B1/12 , H04B10/25133 , H04B10/697 , H04B2210/252
摘要： A distortion compensator, an optical receiver and a transmission system including an operation selectively compensating for linear waveform distortion exerted on an optical signal via a plurality of distortion compensators and compensating for nonlinear waveform distortion exerted on the optical signal using nonlinear distortion compensators.
摘要翻译： 失真补偿器，光接收器和传输系统，其包括经由多个失真补偿器选择性地补偿施加在光信号上的线性波形失真的操作，并且使用非线性失真补偿器补偿施加在光信号上的非线性波形失真。
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公开(公告)号：US20090226187A1
公开(公告)日：2009-09-10
申请号：US12320069
申请日：2009-01-15
IPC分类号： H04B10/06
CPC分类号： H04B10/677 , H04B10/60 , H04B10/69
摘要： An optical receiving apparatus compensates degradation of an optical signal received, based a division operation using the intensity of the optical signal. A receiving unit outputs a first electrical signal corresponding to the phase of the optical signal and a second electrical signal corresponding to the intensity of the optical signal. An analog first dividing unit and a second dividing unit divide the first electrical signal by the second electrical signal. A first ADC and a second ADC convert the divided electrical signal to a digital signal. An identifying unit identifies data of the optical signal based on calculation using the digital signal.
摘要翻译： 光接收装置基于使用光信号的强度的分割操作来补偿所接收的光信号的劣化。 接收单元输出对应于光信号的相位的第一电信号和对应于光信号的强度的第二电信号。 模拟第一分割单元和第二分割单元将第一电信号除以第二电信号。 第一ADC和第二ADC将分频电信号转换为数字信号。 识别单元基于使用数字信号的计算来识别光信号的数据。
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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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17.发明授权公开(公告)号：US08488975B2
公开(公告)日：2013-07-16
申请号：US12911395
申请日：2010-10-25
IPC分类号： H04B10/00
CPC分类号： H04B10/5053 , H04B10/2569 , H04B10/516 , H04B2210/254 , H04J14/06 , H04J14/086
摘要： An optical transmitter includes: a pre-compensator calculating an electrical field of an optical signal subjected to an electronic pre-compensation with respect to an input digital signal; a parallelizer parallelizing the electrical field of the optical signal calculated by the pre-compensator; a plurality of optical modulators modulating an optical signal based on each of parallelized electrical fields of optical signals; and a time-division multiplexer time-division-multiplexing an optical signal output from the plurality of the optical modulators.
摘要翻译： 光发射机包括：预补偿器，用于计算相对于输入数字信号进行电子预补偿的光信号的电场; 平行化由预补偿器计算的光信号的电场的并联器; 多个光调制器，其基于光信号的并行电场中的每一个调制光信号; 以及时分多路复用器，对从多个光调制器输出的光信号进行时分复用。
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18.发明申请OPTICAL TRANSMITTER, OPTICAL TRANSMITTER AND RECEIVER SYSTEM, OPTICAL TRANSMITTING METHOD AND OPTICAL TRANSMITTING AND RECEIVING METHOD 有权光发射机，光发射机和接收机系统，光传输方法和光传输和接收方法公开(公告)号：US20110097085A1
公开(公告)日：2011-04-28
申请号：US12911395
申请日：2010-10-25
CPC分类号： H04B10/5053 , H04B10/2569 , H04B10/516 , H04B2210/254 , H04J14/06 , H04J14/086
摘要： An optical transmitter includes: a pre-compensator calculating an electrical field of an optical signal subjected to an electronic pre-compensation with respect to an input digital signal; a parallelizer parallelizing the electrical field of the optical signal calculated by the pre-compensator; a plurality of optical modulators modulating an optical signal based on each of parallelized electrical fields of optical signals; and a time-division multiplexer time-division-multiplexing an optical signal output from the plurality of the optical modulators.
摘要翻译： 光发射机包括：预补偿器，用于计算相对于输入数字信号进行电子预补偿的光信号的电场; 平行化由预补偿器计算的光信号的电场的并联器; 多个光调制器，其基于光信号的并行电场中的每一个调制光信号; 以及时分多路复用器，对从多个光调制器输出的光信号进行时分复用。
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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：US08649689B2
公开(公告)日：2014-02-11
申请号：US12821061
申请日：2010-06-22
申请人： Nobukazu Koizumi , Takeshi Hoshida , Takahito Tanimura , Hisao Nakashima , Koji Nakamuta , Noriyasu Nakayama
发明人： Nobukazu Koizumi , Takeshi Hoshida , Takahito Tanimura , Hisao Nakashima , Koji Nakamuta , Noriyasu Nakayama
IPC分类号： H04B10/00
CPC分类号： H04B10/616 , H03J7/26 , H04B10/60 , H04B10/611 , H04B10/614 , H04B10/6165 , H04L7/0335 , H04L27/0014 , H04L27/223 , H04L27/2276 , H04L2027/0016 , H04L2027/0067
摘要： A digital coherent receiving apparatus includes a first oscillator for outputting a local light signal of a fixed frequency, a hybrid unit mixing the local light signal with a light signal received by a receiver, a second oscillator for outputting a sampling signal of a sampling frequency, a converter for converting the mixed light signal into digital signal synchronizing with the sampling signal, a waveform adjuster for adjusting a waveform distortion of the converted digital signal, a phase adjustor for adjusting a phase of the digital signal adjusted by the waveform adjustor, a demodulator for demodulating the digital signal adjusted by the phase adjuster, and a phase detector for detecting a phase of the digital signal adjusted by the phase adjuster, and a control signal output unit for outputting a frequency control signal on the basis of the detected phase signal to the second oscillator.
摘要翻译： 数字相干接收装置包括用于输出固定频率的本地光信号的第一振荡器，将本地光信号与由接收机接收的光信号混合的混合单元，用于输出采样频率的采样信号的第二振荡器， 用于将混合光信号转换为与采样信号同步的数字信号的转换器，用于调整转换的数字信号的波形失真的波形调节器，用于调整由波形调节器调节的数字信号的相位的相位调节器，解调器 用于解调由相位调节器调节的数字信号，以及相位检测器，用于检测由相位调节器调节的数字信号的相位;以及控制信号输出单元，用于根据检测到的相位信号将频率控制信号输出到 第二个振荡器。
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