公开(公告)号：US20100329697A1

公开(公告)日：2010-12-30

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： H04B10/06

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。

公开(公告)号：US20100111544A1

公开(公告)日：2010-05-06

申请号：US12496274

申请日：2009-07-01

申请人： Shoichiro ODA ,  Takeshi Hoshida ,  Hisao Nakashima ,  Takahito Tanimura

发明人： Shoichiro ODA ,  Takeshi Hoshida ,  Hisao Nakashima ,  Takahito Tanimura

IPC分类号： H04B10/06

CPC分类号： H04B10/613 ,  H04B10/60 ,  H04B10/64

摘要： While altering a plurality of wavelength setting parameters according to a control sequence, a local oscillation light having a wavelength controlled by those wavelength setting parameters is generated. Further, the received signal light and the generated local oscillation light are mixed, and if an electric signal is generated by photoelectric conversion from the resulting light, then the wavelength control of the local oscillation light is terminated.

摘要翻译： 在根据控制序列改变多个波长设置参数的同时，产生具有由这些波长设置参数控制的波长的本地振荡光。 此外，接收的信号光和产生的本地振荡光被混合，并且如果通过从所得到的光的光电转换产生电信号，则终止本地振荡光的波长控制。

公开(公告)号：US07596315B2

公开(公告)日：2009-09-29

申请号：US10914313

申请日：2004-08-10

申请人： Hisao Nakashima ,  Takeshi Hoshida

发明人： Hisao Nakashima ,  Takeshi Hoshida

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/07 ,  H04B10/2503 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279

摘要： In the wavelength division multiplexing optical transmission system according to the present invention, when setting the transmission wavelengths of the wavelength-variable optical transmitter in case of addition or expansion of the optical transmitter, each transmission wavelength is set automatically so as to match with each port wavelength of the input port in the multiplexer. Therefore, the setting workload of the optical transmitter is remarkably reduced, and occurrence of incorrect setting can be avoided. Also, with a simple and low-cost structure, the cost is restrained from increasing.

摘要翻译： 在根据本发明的波分复用光传输系统中，当在光发射机的添加或扩展的情况下设置波长可变光发射机的传输波长时，每个传输波长被自动设置以便与每个端口匹配 多路复用器中输入端口的波长。 因此，光发送机的设定工作量显着降低，可以避免错误设定的发生。 而且，通过简单且低成本的结构，成本也不受限制。

公开(公告)号：US20080080872A1

公开(公告)日：2008-04-03

申请号：US11740954

申请日：2007-04-27

申请人： Toshiki Tanaka ,  Takeshi Hoshida ,  Hisao Nakashima ,  Yuichi Akiyama

发明人： Toshiki Tanaka ,  Takeshi Hoshida ,  Hisao Nakashima ,  Yuichi Akiyama

IPC分类号： H04B10/04

CPC分类号： H04B10/50572 ,  H04B10/505 ,  H04B10/50575 ,  H04B10/564

摘要： A signal Data1 and Data2 are output from a DQPSK signal source. The output signal is input to the modulator drivers 1 and 2 of the differential output. A drive signal is applied from the drivers 1 and 2 to a modulator, and modulated light is output. An optical coupler 20 branches modulator output, and a power monitor 21 detects the power of the branched light. A detection result is transmitted to an amplitude control unit 22. The amplitude control unit 22 adjusts the amplitude of the drivers 1 and 2 such that the detection result of the power monitor 21 can be the maximum.

摘要翻译： 从DQPSK信号源输出信号数据1和数据2。 输出信号被输入到差分输出的调制器驱动器1和2。 将驱动信号从驱动器1和2施加到调制器，并输出调制光。 光耦合器20分支调制器输出，功率监视器21检测分支光的功率。 检测结果被发送到振幅控制单元22。 振幅控制单元22调节驱动器1,2的振幅，使得功率监视器21的检测结果最大。

公开(公告)号：US20080031633A1

公开(公告)日：2008-02-07

申请号：US11655186

申请日：2007-01-19

申请人： Takeshi Hoshida ,  Hisao Nakashima

发明人： Takeshi Hoshida ,  Hisao Nakashima

IPC分类号： H04B10/12

CPC分类号： H04B10/6971 ,  H04B10/677

摘要： A multi-level modulation receiving device for adaptively compensating for chromatic dispersion and polarization mode dispersion with high precision. Each equalizing filter has at least one variable parameter as a weight therefor and equalizes the waveform of a corresponding channel signal in accordance with an averaged variable parameter value. A signal quality monitor monitors the signal quality of the filter output signal, and a variable parameter value calculator calculates a variable parameter value to be set as the variable parameter, in accordance with the signal quality. A variable parameter averaging unit averages the variable parameter values calculated for respective channels, to generate an averaged variable parameter value, and sends the averaged variable parameter value to the equalizing filters such that the same weight is set in the equalizing filters associated with the n channels.

摘要翻译： 一种用于以高精度自适应地补偿色散和偏振模色散的多电平调制接收装置。 每个均衡滤波器具有至少一个可变参数作为其权重，并根据平均的可变参数值对相应的信道信号的波形进行均衡。 信号质量监视器监视滤波器输出信号的信号质量，并且可变参数值计算器根据信号质量计算要设置为可变参数的可变参数值。 可变参数平均单元对为各个通道计算的可变参数值进行平均，以生成平均的可变参数值，并将平均的可变参数值发送到均衡滤波器，使得在与n个通道相关联的均衡滤波器中设置相同的权重 。

公开(公告)号：US20070047969A1

公开(公告)日：2007-03-01

申请号：US11274824

申请日：2005-11-16

申请人： Hisao Nakashima ,  Takeshi Hoshida

发明人： Hisao Nakashima ,  Takeshi Hoshida

IPC分类号： H04B10/04

CPC分类号： G02F1/2255 ,  G02F2001/212 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/50572 ,  H04B10/5561 ,  H04L27/2075 ,  H04L27/2096

摘要： The present invention is directed toward a method for setting a driving voltage of a differential quadrature phase-shift modulator, this method making signal quality superior in response to an individual difference in extinction ratio due to variations in manufacture of a device. To this end, signal quality of differential quadrature phase-shift modulated light output from a differential quadrature phase-shift modulator is acquired. An average amplitude of a first or second driving voltage signal is adjusted according to the signal quality of the thus-acquired differential quadrature phase-shift modulated light.

摘要翻译： 本发明涉及一种用于设定差分正交相移调制器的驱动电压的方法，该方法使得信号质量响应于由于器件的制造变化而导致的消光比的个体差别而优异。 为此，获取从差分正交相移调制器输出的差分正交相移调制光的信号质量。 根据这样获取的差分正交相移调制光的信号质量来调整第一或第二驱动电压信号的平均振幅。

公开(公告)号：US07061669B2

公开(公告)日：2006-06-13

申请号：US10950699

申请日：2004-09-28

申请人： Hisao Nakashima ,  Miki Onaka ,  Masato Nishihara ,  Etsuko Hayashi ,  Hideyuki Miyata

发明人： Hisao Nakashima ,  Miki Onaka ,  Masato Nishihara ,  Etsuko Hayashi ,  Hideyuki Miyata

IPC分类号： H01S3/00

CPC分类号： H04B10/291 ,  H01S3/1305 ,  H01S3/1312 ,  H01S5/0683 ,  H01S5/50

摘要： An optical apparatus having a loss compensation capability includes between an input connector 1A and an output connector 1B an input side optical parts 2 including an input monitor, an amplification medium 3, a loss medium 4, and an output side optical parts 5 including an output monitor in this order, and is provided with a control circuit 6 for controlling a gain based on a monitor result of input/output light. The amount of reflection attenuation on all points, on which the light can be reflected on the optical path from the output end of the amplification medium 3 to the output connector 1B, can be smaller than the amount of reflection attenuation on the end face of the output connector 1B.

摘要翻译： 具有损耗补偿能力的光学装置在输入连接器1A和输出连接器1B之间包括输入侧光学部件2，输入侧光学部件2包括输入监视器，放大介质3，损耗介质4和输出侧光学部件5，包括 输出监视器，并且设置有用于基于输入/输出光的监视结果来控制增益的控制电路6。 光可以在从放大介质3的输出端到输出连接器1B的光路上反射的所有点上的反射衰减量可以小于在放大介质3的端面上的反射衰减量 输出连接器1B。

公开(公告)号：US20050213979A1

公开(公告)日：2005-09-29

申请号：US10914313

申请日：2004-08-10

申请人： Hisao Nakashima ,  Takeshi Hoshida

发明人： Hisao Nakashima ,  Takeshi Hoshida

IPC分类号： H04J14/00 ,  H04B10/071 ,  H04J14/02

CPC分类号： H04J14/02 ,  H04B10/07 ,  H04B10/2503 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279

摘要： In the wavelength division multiplexing optical transmission system according to the present invention, when setting the transmission wavelengths of the wavelength-variable optical transmitter in case of addition or expansion of the optical transmitter, each transmission wavelength is set automatically so as to match with each port wavelength of the input port in the multiplexer. Therefore, the setting workload of the optical transmitter is remarkably reduced, and occurrence of incorrect setting can be avoided. Also, with a simple and low-cost structure, the cost is restrained from increasing.

摘要翻译： 在根据本发明的波分复用光传输系统中，当在光发射机的添加或扩展的情况下设置波长可变光发射机的传输波长时，每个传输波长被自动设置以便与每个端口匹配 多路复用器中输入端口的波长。 因此，光发送机的设定工作量显着降低，可以避免错误设定的发生。 而且，通过简单且低成本的结构，成本也不受限制。

公开(公告)号：US4509173A

公开(公告)日：1985-04-02

申请号：US366324

申请日：1982-04-07

申请人： Jun-ichi Umeda ,  Hisao Nakashima ,  Takashi Kajimura ,  Takao Kuroda

发明人： Jun-ichi Umeda ,  Hisao Nakashima ,  Takashi Kajimura ,  Takao Kuroda

IPC分类号： H01S5/00 ,  H01S5/40 ,  H01S3/19

CPC分类号： H01S5/4068

摘要： A semiconductor laser device is provided with a semiconductor substrate and at least a semiconductor assembly for optical confinement formed on the substrate which includes an active layer and cladding layers. A first electrode is disposed on the semiconductor assembly and a second electrode is disposed on the semiconductor substrate. To provide a phase-locked semiconductor laser device of high quality, a plurality of regions are provided in the semiconductor assembly which, in effect, cause a variation of a complex refractive index for a laser beam in a direction intersecting with a traveling direction of the laser beam. These regions can be discretely disposed over or under the active layer and give rise to a nonlinear interaction between adjacent laser emission regions formed by the plurality of regions.

摘要翻译： 半导体激光装置设置有半导体基板和至少一个形成在基板上的用于光学限制的半导体组件，该半导体组件包括有源层和包层。 第一电极设置在半导体组件上，第二电极设置在半导体衬底上。 为了提供高质量的锁相半导体激光器件，在半导体组件中设置多个区域，其实际上导致激光束在与行进方向相交的方向上的复合折射率的变化 激光束。 这些区域可以离散地设置在有源层上或下方，并产生由多个区域形成的相邻激光发射区域之间的非线性相互作用。