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：US07860408B2

公开(公告)日：2010-12-28

申请号：US11651591

申请日：2007-01-10

申请人： Akihiko Isomura ,  Jens Rasmussen ,  Takafumi Terahara ,  Kentaro Nakamura ,  Takeshi Hoshida ,  George Ishikawa ,  Hiroshi Onaka ,  Morio Wada ,  Hiroyuki Matsuura ,  Akira Miura ,  Yasuyuki Suzuki ,  Hideaki Arai ,  Satoshi Takasugi

发明人： Akihiko Isomura ,  Jens Rasmussen ,  Takafumi Terahara ,  Kentaro Nakamura ,  Takeshi Hoshida ,  George Ishikawa ,  Hiroshi Onaka ,  Morio Wada ,  Hiroyuki Matsuura ,  Akira Miura ,  Yasuyuki Suzuki ,  Hideaki Arai ,  Satoshi Takasugi

IPC分类号： H04B10/06

CPC分类号： G02F1/225 ,  G02F2203/21 ,  H04L1/0047 ,  H04L27/223

摘要： An interferometer for demodulating a differential M-phase shift keying signal includes a PLC type interferometer main body, a heating portion that heats the PLC type interferometer main body, and an intermediate member having a higher stiffness than that of the PLC type interferometer main body, for bonding the PLC type interferometer main body and the heating portion with each other while being sandwiched therebetween. A linear expansion coefficient difference between the PLC type interferometer main body and the intermediate member is equal to or smaller than 4.5×10−6/° C., and a thermal conductivity difference between the PLC type interferometer main body and the intermediate member is equal to or larger than 10 W/mK. A phase of an optical signal flowing through the interferometer is adjusted by using the heating portion and a second heating portion.

摘要翻译： 用于解调差分M相移键控信号的干涉仪包括PLC型干涉仪主体，加热PLC型干涉仪主体的加热部分和具有比PLC型干涉仪主体更高刚度的中间部件， 用于将PLC型干涉仪主体和加热部分夹在两者之间彼此粘合。 PLC型干涉仪主体与中间构件之间的线膨胀系数差等于或小于4.5×10-6 /℃，PLC型干涉仪主体与中间构件之间的热导率差相等 至10W / mK以上。 通过使用加热部和第二加热部来调节流过干涉仪的光信号的相位。

公开(公告)号：US07848659B2

公开(公告)日：2010-12-07

申请号：US11298892

申请日：2005-12-12

申请人： Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

发明人： Akira Miura ,  Kentaro Nakamura ,  Hiroshi Onaka ,  Yuichi Akiyama ,  Hiroki Ooi ,  Jens Rasmussen ,  Takeshi Hoshida

IPC分类号： H04B10/04

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50597 ,  H04B10/58

摘要： A data modulator unit generates a DQPSK optical signal in accordance with a data signal. A phase shift unit provides a phase difference of π/2 between a pair of arms. A photodetector converts an output signal of the data modulator unit into an electrical signal. A filter is a low-pass filter with a cut-off frequency lower than a symbol frequency, and filters an output signal of the photodetector. A monitor unit detects power of an output signal of the filter. A phase difference control unit adjusts the amount of phase shift in the phase shift unit so as to minimize power of an output signal of the filter.

摘要翻译： 数据调制器单元根据数据信号产生DQPSK光信号。 相移单元在一对臂之间提供＆pgr / / 2的相位差。 光电检测器将数据调制器单元的输出信号转换为电信号。 滤波器是具有低于符号频率的截止频率的低通滤波器，并对光电检测器的输出信号进行滤波。 监视器单元检测滤波器的输出信号的功率。 相位差控制单元调整相移单元中的相移量，以使滤波器的输出信号的功率最小化。

公开(公告)号：US20090136229A1

公开(公告)日：2009-05-28

申请号：US12359406

申请日：2009-01-26

申请人： Takeshi Hoshida ,  Hiroshi Onaka ,  Takafumi Terahara

发明人： Takeshi Hoshida ,  Hiroshi Onaka ,  Takafumi Terahara

IPC分类号： H04J14/00

CPC分类号： H04B10/2916 ,  H01S3/094011 ,  H01S3/302

摘要： A method and system for transmitting information in an optical communication system includes modulating a non-intensity characteristic of an optical carrier signal with a data signal to generate an optical information signal. The optical information signal is transmitted over an optical link. The optical information signal is amplified over a length of the optical link with a co-launched amplification signal traveling in the optical link in a same direction as the optical information signal.

摘要翻译： 用于在光通信系统中发送信息的方法和系统包括用数据信号调制光载波信号的非强度特性以产生光信息信号。 光信息信号通过光链路传输。 光信息信号在光链路的长度上以与光信息信号相同的方向在光链路中行进的共同放大信号放大。

公开(公告)号：US20060280510A1

公开(公告)日：2006-12-14

申请号：US11397690

申请日：2006-04-05

申请人： Hiroshi Onaka ,  Takeshi Hoshida

发明人： Hiroshi Onaka ,  Takeshi Hoshida

IPC分类号： H04B10/04

CPC分类号： H04L27/223 ,  H04B10/60 ,  H04L27/2331

摘要： An optical receiver comprises branching units for branching and supplying the signal lights to be inputted to the first to fourth optical waveguides provided on a substrate, second to third optical waveguides for giving delay time differences corresponding to a symbol of the DMPSK modulated signal, a demodulating unit for demodulating two light signals through interference of signal lights between the first to second optical waveguides and between the third to fourth optical waveguides, two optical detectors for converting two light signals from the demodulating unit, and a light path length varying unit for identically varying each light path length of two optical waveguides being arranged through selection of combinations of the first and third optical waveguides, the first and fourth optical waveguides, and the second and third optical waveguides in one region when the wavelength of the signal light is varied.

公开(公告)号：US20080056710A1

公开(公告)日：2008-03-06

申请号：US11785896

申请日：2007-04-20

申请人： Hiroki Ooi ,  Hiroshi Onaka ,  Takeshi Hoshida

发明人： Hiroki Ooi ,  Hiroshi Onaka ,  Takeshi Hoshida

IPC分类号： H04B17/00

CPC分类号： H04B10/25133

摘要： A variable dispersion compensating unit compensates an optical signal, and changes the compensation amount according to a control signal that has a given frequency. After demodulation of the compensated optical signal, error conditions of the signal are monitored and an error signal is output. A band pass filter filters the error signal for a component having a frequency equal to or less than the given frequency. Based on the component and on the control signal, a synchronous detecting circuit generates a compensation amount modification signal. The compensation amount modification signal is superposed on the control signal.

摘要翻译： 可变色散补偿单元补偿光信号，并根据具有给定频率的控制信号改变补偿量。 在对补偿的光信号进行解调之后，监视信号的误差状况并输出误差信号。 带通滤波器滤波具有等于或小于给定频率的频率的分量的误差信号。 基于分量和控制信号，同步检测电路产生补偿量修正信号。 补偿量修正信号叠加在控制信号上。

公开(公告)号：US20050220388A1

公开(公告)日：2005-10-06

申请号：US11094642

申请日：2005-03-31

申请人： Kazuo Hironishi ,  Takeshi Hoshida ,  Hiroshi Onaka

发明人： Kazuo Hironishi ,  Takeshi Hoshida ,  Hiroshi Onaka

IPC分类号： G02F1/01 ,  G02F1/21 ,  G02F1/295 ,  G02F1/35 ,  G02F1/365 ,  G02F2/00

CPC分类号： H04B10/299 ,  G02F1/3501 ,  G02F1/3517 ,  G02F1/3519 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2203/26

摘要： The optical waveform shaper comprises a plurality of interferometers connected in series. The transfer function of each interferometer is either one of a first transfer function, in which the second order derivative of the output optical power in respect to the input optical power is positive when the input optical power is in the neighborhood of zero, or a second transfer function, and the output optical power shows substantially periodical changes to the input optical power, or a second transfer function, in which the second order derivative of the output optical power in respect to the input optical power is negative when the input optical power is in the neighborhood of zero, or a second transfer function, and the output optical power shows substantially periodical changes to the input optical power. At least one of the interferometers uses the second transfer function.

摘要翻译： 光波形整形器包括串联连接的多个干涉仪。 每个干涉仪的传递函数是第一传递函数中的一个，其中输入光功率相对于输入光功率的输出光功率的二阶导数在输入光功率在零附近为正时，或第二传递函数 传输函数，输出光功率对输入光功率或第二传递函数实质上周期性地改变，其中当输入光功率为输入光功率时，输出光功率的二阶导数相对于输入光功率为负值 在零附近或第二传递函数中，并且输出光功率基本上周期性地改变输入光功率。 至少一个干涉仪使用第二传递函数。

公开(公告)号：US07869715B2

公开(公告)日：2011-01-11

申请号：US11785896

申请日：2007-04-20

申请人： Hiroki Ooi ,  Hiroshi Onaka ,  Takeshi Hoshida

发明人： Hiroki Ooi ,  Hiroshi Onaka ,  Takeshi Hoshida

IPC分类号： H04B10/12

CPC分类号： H04B10/25133

摘要： A variable dispersion compensating unit compensates an optical signal, and changes the compensation amount according to a control signal that has a given frequency. After demodulation of the compensated optical signal, error conditions of the signal are monitored and an error signal is output. A band pass filter filters the error signal for a component having a frequency equal to or less than the given frequency. Based on the component and on the control signal, a synchronous detecting circuit generates a compensation amount modification signal. The compensation amount modification signal is superposed on the control signal.

摘要翻译： 可变色散补偿单元补偿光信号，并根据具有给定频率的控制信号改变补偿量。 在对补偿的光信号进行解调之后，监视信号的误差状况并输出误差信号。 带通滤波器滤波具有等于或小于给定频率的频率的分量的误差信号。 基于分量和控制信号，同步检测电路产生补偿量修正信号。 补偿量修正信号叠加在控制信号上。

公开(公告)号：US07631378B2

公开(公告)日：2009-12-15

申请号：US11094642

申请日：2005-03-31

申请人： Kazuo Hironishi ,  Takeshi Hoshida ,  Hiroshi Onaka

发明人： Kazuo Hironishi ,  Takeshi Hoshida ,  Hiroshi Onaka

IPC分类号： G01B9/02

CPC分类号： H04B10/299 ,  G02F1/3501 ,  G02F1/3517 ,  G02F1/3519 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2203/26

摘要： The present invention is an optical waveform shaper that utilizes a plurality of interferometers. Each interferometer has one of two types of transfer functions. One type is a first transfer function characterized as having a positive second order derivative of the output optical power in respect to the input optical power. Another type is a second transfer function characterized as having a negative second order derivative of the output optical power in respect to the input optical power. The characteristics of both the first transfer function and the second transfer function are actualized when the input optical power is in the neighborhood of zero and the output optical power shows substantially periodic change with respect to the input optical power. At least one of the plurality of interferometers uses the second transfer function.

摘要翻译： 本发明是利用多个干涉仪的光学波形整形器。 每个干涉仪都有两种传递函数之一。 一种类型是第一传递函数，其特征在于相对于输入光功率具有输出光功率的正二阶导数。 另一种类型是第二传递函数，其特征在于相对于输入光功率具有输出光功率的负二阶导数。 当输入光功率在零附近时，实现第一传递函数和第二传递函数的特性，并且输出光功率相对于输入光功率显示出周期性的周期性变化。 多个干涉仪中的至少一个使用第二传递函数。

公开(公告)号：US07606504B2

公开(公告)日：2009-10-20

申请号：US11397690

申请日：2006-04-05

申请人： Hiroshi Onaka ,  Takeshi Hoshida

发明人： Hiroshi Onaka ,  Takeshi Hoshida

IPC分类号： H04B10/06 ,  G02F2/00

CPC分类号： H04L27/223 ,  H04B10/60 ,  H04L27/2331

摘要： An optical receiver comprises branching units for branching and supplying the signal lights to be inputted to the first to fourth optical waveguides provided on a substrate, second to third optical waveguides for giving delay time differences corresponding to a symbol of the DMPSK modulated signal, a demodulating unit for demodulating two light signals through interference of signal lights between the first to second optical waveguides and between the third to fourth optical waveguides, two optical detectors for converting two light signals from the demodulating unit, and a light path length varying unit for identically varying each light path length of two optical waveguides being arranged through selection of combinations of the first and third optical waveguides, the first and fourth optical waveguides, and the second and third optical waveguides in one region when the wavelength of the signal light is varied.

摘要翻译： 光接收机包括分支单元，用于分支和提供要输入到设置在基板上的第一至第四光波导的信号光;第二至第三光波导，用于给出对应于DMPSK调制信号的符号的延迟时间差;解调 用于通过第一至第二光波导之间和第三至第四光波导之间的信号光的干扰来解调两个光信号的单元，用于转换来自解调单元的两个光信号的两个光检测器，以及用于相同变化的光路长度变化单元 当信号光的波长变化时，两个光波导的每个光路长度通过选择第一和第三光波导，第一和第四光波导以及一个区域中的第二和第三光波导的组合来布置。