公开(公告)号：US20060222377A1

公开(公告)日：2006-10-05

申请号：US11391414

申请日：2006-03-29

申请人： Takeshi Hoshida ,  Nobuhiro Fukushima

发明人： Takeshi Hoshida ,  Nobuhiro Fukushima

IPC分类号： H04B10/06

CPC分类号： H04L27/22 ,  H04B10/60

摘要： A small size and low cost optical receiving apparatus, which can stably demodulate the signal, lights in accordance with the differential M-phase shift keying (DMPSK) system. An optical receiving apparatus comprises a light branching unit for branching the differential M-phase shift keying signal beam into four signal light beams, a delay adjusting unit giving a delay time difference of one symbol between a first signal light beam and a second signal light beam and between a third signal light beam and a fourth signal light beam, a demodulating unit for outputting a least two demodulated light signals through respective interferences between the first signal light beam and the second signal light beam, and between the third signal light beam and the fourth signal light beam on one plane which is not parallel to any signal light beam, and at least two optical detectors for converting at least two light signals into electrical signals.

摘要翻译： 可以稳定地解调信号的小尺寸和低成本的光接收装置根据差分M相移键控（DMPSK）系统点亮。 光接收装置包括用于将差分M相移键控信号光束分支为四个信号光束的光分支单元，延迟调整单元，其给出第一信号光束和第二信号光束之间的一个符号的延迟时间差 并且在第三信号光束和第四信号光束之间，解调单元，用于通过第一信号光束和第二信号光束之间的相应干扰以及第三信号光束和第二信号光束之间的相应干扰输出至少两个解调光信号; 在不平行于任何信号光束的一个平面上的第四信号光束，以及用于将至少两个光信号转换为电信号的至少两个光学检测器。

公开(公告)号：US20060171718A1

公开(公告)日：2006-08-03

申请号：US11117429

申请日：2005-04-29

申请人： Takeshi Hoshida

发明人： Takeshi Hoshida

IPC分类号： H04B10/00

CPC分类号： H04B10/61 ,  H04B10/532

摘要： In an optical receiver according to the present invention, an input signal light subjected to the differential quadrature phase shift keying (DQPSK) is incident on a PANDA type fiber in a linearly polarized state by 45°, so that a delay time difference corresponding to one symbol is generated between orthogonal polarization components in the DQPSK signal light, and then, the signal light is branched by a half mirror into two, to be sent to first and second paths respectively, thereby giving, by a ¼ wave plate disposed on one of the paths, a relative birefringent amount difference of π/2 between the lights propagated through the respective paths. Then, each of the lights propagated through the first and second paths is separated into two orthogonal polarization components by a polarization beam splitter, and the respective polarization components are received by a differential reception circuit so that in-phase components and quadrature components in the DQPSK signal are demodulated. Thus, a small sized and low cost optical receiver capable of stably demodulating the DQPSK signal is provided.

公开(公告)号：US07035543B1

公开(公告)日：2006-04-25

申请号：US09853316

申请日：2001-05-10

申请人： Takeshi Hoshida ,  Hiroshi Onaka

发明人： Takeshi Hoshida ,  Hiroshi Onaka

IPC分类号： H04J14/02

CPC分类号： H04B10/69 ,  H04B10/677 ,  H04J14/02

摘要： A method and system for demultiplexing non-intensity modulated wavelength division multiplexed (WDM) signals includes receiving a WDM signal having a plurality of non-intensity modulated optical information signals. A plurality of the non-intensity modulated optical information signals are converted to intensity modulated signals while the plurality of non-intensity modulated optical information signals are multiplexed in at least a portion of the WDM signal.

摘要翻译： 用于解复用非强度调制波分复用（WDM）信号的方法和系统包括接收具有多个非强度调制光信息信号的WDM信号。 多个非强度调制光信息信号被转换为强度调制信号，而多个非强度调制光信息信号在WDM信号的至少一部分被复用。

公开(公告)号：US20050117908A1

公开(公告)日：2005-06-02

申请号：US10726157

申请日：2003-12-02

申请人： Gerardo Castanon ,  Remi Pecqueur ,  Takeshi Hoshida

发明人： Gerardo Castanon ,  Remi Pecqueur ,  Takeshi Hoshida

IPC分类号： H04B10/02 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  G02B6/26 ,  G02B6/42

CPC分类号： H04Q11/0005 ,  H04Q2011/0015

摘要： An optical cross-connect includes multiple input ports that each receive an optical input signal and multiple output ports that each output an optical output signal. The optical cross-connect also includes a distributing amplifier associated with each input port that generates multiple copies of the input signal received at the associated input port. Furthermore, the optical cross-connect includes multiple filter units that receive a copy of one or more of the input signals from one or more of the distributing amplifiers and forward traffic in selected channels of one or more of the received copies. In addition, the optical cross-connect includes a combining amplifier associated with each output port. Each combining amplifier receives the traffic in one or more of the channels forwarded by one or more of the filter units and combines the received traffic into an output signal to be output from the associated output port. The optical cross-connect further includes one or more regeneration modules that each regenerate the traffic in one or more channels of one or more of the input signals.

摘要翻译： 光交叉连接包括多个输入端口，每个输入端口接收光输入信号和多个输出端口，每个输出端口输出光输出信号。 光交叉连接还包括与每个输入端口相关联的分配放大器，其产生在相关联的输入端口处接收的输入信号的多个副本。 此外，光交叉连接包括多个滤波器单元，其接收来自一个或多个分配放大器的一个或多个输入信号的副本以及一个或多个所接收副本的所选频道中的前向业务。 此外，光交叉连接包括与每个输出端口相关联的组合放大器。 每个组合放大器接收由一个或多个滤波器单元转发的一个或多个信道中的业务，并将接收到的业务组合成输出信号以从相关联的输出端口输出。 光学交叉连接还包括一个或多个再生模块，每个再生模块在一个或多个输入信号的一个或多个通道中重新生成流量。

公开(公告)号：US08935115B2

公开(公告)日：2015-01-13

申请号：US13412176

申请日：2012-03-05

申请人： Weizhen Yan ,  Zhenning Tao ,  Takeshi Hoshida

发明人： Weizhen Yan ,  Zhenning Tao ,  Takeshi Hoshida

IPC分类号： G06F19/00 ,  H04B10/255 ,  H04B10/69

CPC分类号： H04B10/255 ,  H04B10/6971

摘要： A method and apparatus for compensating nonlinear damage are disclosed. The method for compensating nonlinear damage, including: determining an additive parameter indicating an amount of nonlinear damage based on a plurality of sampled signal sets among which a sampling time of an input signal varies according to different time; and subtracting the additive parameter from the input signal.

摘要翻译： 公开了一种用于补偿非线性损伤的方法和装置。 一种用于补偿非线性损伤的方法，包括：基于多个采样信号集确定表示非线性损伤量的附加参数，其中输入信号的采样时间根据不同的时间而变化; 并从输入信号中减去加法参数。

公开(公告)号：US08649678B2

公开(公告)日：2014-02-11

申请号：US12488745

申请日：2009-06-22

申请人： Takeshi Hoshida ,  Katsumi Fukumitsu

发明人： Takeshi Hoshida ,  Katsumi Fukumitsu

IPC分类号： H04B10/08

CPC分类号： H04J14/0227 ,  H04J14/0246 ,  H04J14/0279 ,  H04J14/0283 ,  H04L1/0036 ,  H04L1/0053 ,  H04L1/203 ,  H04L43/0847

摘要： The technique for improving the efficiency in use of power resources while maintaining the received signal quality that satisfies the requirement during a system operation is disclosed. The frame processing apparatus disclosed in the present case includes: a frame processing unit which performs frame processing on an input signal in the designated error processing mode; and a controlling unit which receives the monitoring result relating to the signal quality of the input signal and performs switching control of the designation of the above error processing mode in the frame processing unit based on the received monitoring result.

摘要翻译： 公开了一种提高电力资源使用效率的技术，同时保持在系统操作期间满足要求的接收信号质量。 在本例中公开的帧处理装置包括：帧处理部，其以指定的误差处理模式对输入信号进行帧处理; 以及控制单元，其接收与输入信号的信号质量相关的监视结果，并且基于接收的监视结果执行帧处理单元中的上述错误处理模式的指定的切换控制。

公开(公告)号：US20130230313A1

公开(公告)日：2013-09-05

申请号：US13412096

申请日：2012-03-05

申请人： Weizhen YAN ,  Zhenning Tao ,  Takeshi Hoshida

发明人： Weizhen YAN ,  Zhenning Tao ,  Takeshi Hoshida

IPC分类号： H04B10/18

CPC分类号： H04L25/0202 ,  H04B10/6971

摘要： The embodiments relate to a method and an apparatus for compensating nonlinear damage. The method and apparatus being used in a dual-polarization communication system, the method comprising: calculating, according to input time-domain signals, a plurality of multiplicative parameters indicative of nonlinear damages to the input signals; constructing a plurality of multiplicators by using the plurality of multiplicative parameters; and compensating the input time-domain signals by using the plurality of multiplicators.

摘要翻译： 实施例涉及用于补偿非线性损伤的方法和装置。 所述方法和装置用于双极化通信系统中，所述方法包括：根据输入的时域信号，计算指示对所述输入信号的非线性损伤的多个乘法参数; 通过使用所述多个乘法参数构造多个乘法器; 以及通过使用所述多个乘法器来补偿所述输入时域信号。

公开(公告)号：US08509628B2

公开(公告)日：2013-08-13

申请号：US12565812

申请日：2009-09-24

申请人： Kazuo Hironishi ,  Takeshi Hoshida

发明人： Kazuo Hironishi ,  Takeshi Hoshida

IPC分类号： H04B10/06

CPC分类号： H04L27/223 ,  H04B10/66 ,  H04B10/677

摘要： A first optical splitter splits an input optical signal and outputs it to first and second optical paths. A second optical splitter outputs the optical signal from the first optical path to third and fourth optical paths. A third optical splitter outputs the optical signal from the second optical path to fifth and sixth optical paths. In the second optical path, 1-symbol delay element and π/4 phase shifter element are configured. In the fourth optical path, π/2 phase shifter element is configured. First and second adjuster circuits adjust the optical path length of the second and the fourth optical paths, respectively, by temperature control. A first optical coupler couples optical signals transmitted via the third and the fifth optical paths. A second optical coupler couples optical signals transmitted via the fourth and the sixth optical paths. Photodetectors convert the optical signals from the optical couplers into electrical signals.

公开(公告)号：US20120290244A1

公开(公告)日：2012-11-15

申请号：US13412176

申请日：2012-03-05

申请人： Weizhen YAN ,  Zhenning Tao ,  Takeshi Hoshida

发明人： Weizhen YAN ,  Zhenning Tao ,  Takeshi Hoshida

IPC分类号： G01D18/00 ,  G06F19/00

CPC分类号： H04B10/255 ,  H04B10/6971

摘要： A method and apparatus for compensating nonlinear damage are disclosed. The method for compensating nonlinear damage, including: determining an additive parameter indicating an amount of nonlinear damage based on a plurality of sampled signal sets among which a sampling time of an input signal varies according to different time; and subtracting the additive parameter from the input signal.

摘要翻译： 公开了一种用于补偿非线性损伤的方法和装置。 一种用于补偿非线性损伤的方法，包括：基于多个采样信号集确定表示非线性损伤量的附加参数，其中输入信号的采样时间根据不同的时间而变化; 并从输入信号中减去加法参数。

公开(公告)号：US08244138B2

公开(公告)日：2012-08-14

申请号：US12071984

申请日：2008-02-28

申请人： Takeshi Hoshida ,  Jens Rasmussen

发明人： Takeshi Hoshida ,  Jens Rasmussen

IPC分类号： H04B10/00

CPC分类号： H04J14/06 ,  H04B10/532

摘要： By using low-frequency signals, an optical transmitting unit modulates one of a wavelength, a transmission timing, and an intensity of light as a carrier wave. A polarization multiplexer synthesizes the output light signals, modulated by the optical transmitting unit, in polarization states orthogonal to each other and generates polarization-multiplexing signals. A polarization splitter splits by extracting two orthogonal polarization components from the polarization-multiplexing signals. The polarization states of the polarization-multiplexing signals are controlled by a polarization controller in an optical receiving unit. A band-pass filter extracts components transmitting through passbands from output signals of the optical receiving unit and outputs an intensity of the components. Based on the intensity output from the filter, a controlling circuit generates feedback control signals for maximizing a ratio of the components of the low-frequency signals and by using the feedback control signals, the polarization controller controls the polarization states of the optical multiplexing signals.

摘要翻译： 通过使用低频信号，光发送单元调制作为载波的波长，发送定时和光强度中的一个。 偏振复用器以由彼此正交的极化状态合成由光发射单元调制的输出光信号，并产生偏振复用信号。 偏振分离器通过从偏振复用信号中提取两个正交偏振分量来分离。 偏振复用信号的偏振状态由光接收单元中的偏振控制器控制。 带通滤波器提取从光接收单元的输出信号通过通带传输的分量，并输出分量的强度。 基于来自滤波器的强度输出，控制电路产生用于使低频信号的分量的比率最大化的反馈控制信号，并且通过使用反馈控制信号，偏振控制器控制光复用信号的偏振状态。