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。

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。

公开(公告)号：US20080232816A1

公开(公告)日：2008-09-25

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 ,  H04B10/04 ,  H04B10/06

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。

公开(公告)号：US07555061B2

公开(公告)日：2009-06-30

申请号：US11155666

申请日：2005-06-20

申请人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

发明人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

IPC分类号： H04L27/20

CPC分类号： H04B10/5051 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/5561 ,  H04L25/03343 ,  H04L27/2075 ,  H04L27/2096

摘要： An optical sender is disclosed that operates in a Differential Quadrature Phase Shift Keying modulation scheme for high speed optical transmission and is capable of performing logical calculations at a low speed. The optical sender transmits a Differential Quadrature Phase Shift Keying (DQPSK) signal generated with modulation signals ρk and ηk so that a signal directly output from a signal receiver corresponding to the optical sender is in agreement with data signals Ik and Qk to be transmitted. The signal receiver is capable of modulation by DQPSK, and the modulation signals ρk and ηk are precoded by using the data signals Ik and Qk and the modulation signals one symbol earlier (ρk−1 and ηk−1) . The optical sender includes plural precoders that perform logical calculation simultaneously and in parallel on plural data signals one period after another period.

摘要翻译： 公开了一种用于高速光传输的差分正交相移键控调制方案的光发送器，并能够以低速进行逻辑运算。 光发送器发送利用调制信号rhok和etak生成的差分正交相移键控（DQPSK）信号，使得从与光发送器对应的信号接收器直接输出的信号与要发送的数据信号Ik和Qk一致。 信号接收机能够通过DQPSK调制，并且通过使用数据信号Ik和Qk以及前一个符号（rhok-1和etak-1）的调制信号对调制信号rhok和etak进行预编码。 光发送器包括多个预编码器，这些预编码器在一个周期之后的一个周期上同时并行并行地执行多个数据信号。

公开(公告)号：US07689133B2

公开(公告)日：2010-03-30

申请号：US11510729

申请日：2006-08-28

申请人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

发明人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

IPC分类号： H04B10/06

CPC分类号： H04B10/66 ,  H04L27/223

摘要： An optical signal reception device is disclosed that receives and demodulates an optical signal modulated by DQPSK and performs logical inversion and other controls to transit to the object reception state. The signal reception device includes a front end including a delay interferometer and an opto-electric conversion element that receive the DQPSK optical signal and convert it into an in-phase signal and a quadrature-phase signal, a clock regenerator that regenerates a clock signal based on the in-phase signal and the quadrature-phase signal, a multiplexer that multiplexes the in-phase signal and the quadrature-phase signal, a reception frame processing unit that detects frame synchronization based on the signal multiplexed by the multiplexer and de-maps the received frames, and a controller that, based on out-of-frame-synchronization information (LOF/OOF) from the reception frame processing unit, performs logical inversion control in the clock regenerator, multiplexing timing control in the multiplexer, and controls the delay interferometer in the front end so as to transit to the object reception state.

摘要翻译： 公开了一种光信号接收装置，其接收并解调由DQPSK调制的光信号，并执行逻辑反转和其它控制以转接到对象接收状态。 信号接收装置包括前端，其包括延迟干涉仪和光电转换元件，其接收DQPSK光信号并将其转换为同相信号和正交相位信号，时钟再生器基于时钟信号再生 在同相信号和正交相位信号上，复用多路复用同相信号和正交相位信号的接收帧处理单元，其基于由多路复用器多路复用的信号和去映射来检测帧同步 接收帧，以及基于来自接收帧处理单元的帧外同步信息（LOF / OOF）执行时钟再生器中的逻辑反转控制的控制器，多路复用器中的复用定时控制，并且控制 延迟干涉仪在前端，以便转移到物体接收状态。

公开(公告)号：US20060193399A1

公开(公告)日：2006-08-31

申请号：US11155666

申请日：2005-06-20

申请人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

发明人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

IPC分类号： H04L27/22

CPC分类号： H04B10/5051 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/5561 ,  H04L25/03343 ,  H04L27/2075 ,  H04L27/2096

摘要： An optical sender is disclosed that operates in a Differential Quadrature Phase Shift Keying modulation scheme for high speed optical transmission and is capable of performing logical calculations at a low speed. The optical sender transmits a Differential Quadrature Phase Shift Keying (DQPSK) signal generated with modulation signals ρk and ηk so that a signal directly output from a signal receiver corresponding to the optical sender is in agreement with data signals Ik and Qk to be transmitted. The signal receiver is capable of modulation by DQPSK, and the modulation signals ρk and ηk are precoded by using the data signals Ik and Qk and the modulation signals one symbol earlier (ρk−1 and ηk−1) . The optical sender includes plural precoders that perform logical calculation simultaneously and in parallel on plural data signals one period after another period.

摘要翻译： 公开了一种用于高速光传输的差分正交相移键控调制方案的光发送器，并能够以低速进行逻辑运算。 光发送器发送使用调制信号rho和k和k进行生成的差分正交相移键控（DQPSK）信号，使得从与信号接收器对应的信号接收器直接输出的信号 光发送器与要发送的数据信号I SUB和Q N k一致。 该信号接收机能够通过DQPSK进行调制，并且通过使用数据信号I SUB和/或其调制信号对调制信号进行预编码 并且调制信号先前有一个符号（rho-k-1和eta-k-1）。 光发送器包括多个预编码器，这些预编码器在一个周期之后的一个周期上同时并行并行地执行多个数据信号。

公开(公告)号：US07817923B2

公开(公告)日：2010-10-19

申请号：US11275420

申请日：2005-12-30

申请人： Yuichi Akiyama ,  Takeshi Hoshida ,  Yutaka Kai ,  Hiroki Ooi ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

发明人： Yuichi Akiyama ,  Takeshi Hoshida ,  Yutaka Kai ,  Hiroki Ooi ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

IPC分类号： H04B10/04

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50595 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/5561 ,  H04B10/66 ,  H04B10/677

摘要： A phase shift unit provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.

摘要翻译： 相移单元在经由构成数据调制单元的一对臂发送的一对光信号之间提供规定的相位差（＆pgr / / 2）。 低频信号f0叠加在一个光信号上。 将相位从低频信号f0移位了＆pgr / / 2的信号叠加在另一个光信号上。 一对光信号被耦合，其一部分由光电二极管转换成电信号。 提取包含在电信号中的2f0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f0分量成为最小值。

公开(公告)号：US20060193640A1

公开(公告)日：2006-08-31

申请号：US11282886

申请日：2005-11-21

申请人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

发明人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

IPC分类号： H04B10/04

CPC分类号： H04B10/66 ,  H04L27/223

摘要： An optical signal reception device is disclosed that receives and demodulates an optical signal modulated by DQPSK and performs logical inversion and other controls to transit to the object reception state. The signal reception device includes a front end including a delay interferometer and an opto-electric conversion element that receive the DQPSK optical signal and convert it into an in-phase signal and an orthogonal signal, a clock regenerator that regenerates a clock signal based on the in-phase signal and the orthogonal signal, a multiplexer that multiplexes the in-phase signal and the orthogonal signal, a reception frame processing unit that detects frame synchronization based on the signal multiplexed by the multiplexer and de-maps the received frames, and a controller that, based on out-of-frame-synchronization information (LOF/OOF) from the reception frame processing unit, performs logical inversion control in the clock regenerator, multiplexing timing control in the multiplexer, and controls the delay interferometer in the front end so as to transit to the object reception state.

摘要翻译： 公开了一种光信号接收装置，其接收并解调由DQPSK调制的光信号，并执行逻辑反转和其它控制以转接到对象接收状态。 信号接收装置包括前端，包括延迟干涉仪和接收DQPSK光信号并将其转换为同相信号和正交信号的光电转换元件，时钟再生器基于该信号再生时钟信号 同相信号和正交信号，复用多路复用同相信号和正交信号的接收帧处理单元，其基于由多路复用器复用的信号来检测帧同步并解映射接收的帧，以及 控制器，其基于来自接收帧处理单元的帧外同步信息（LOF / OOF），在时钟再生器中进行逻辑反转控制，多路复用器中进行复用定时控制，并控制前端的延迟干涉仪 以便转移到对象接收状态。

公开(公告)号：US20070065157A1

公开(公告)日：2007-03-22

申请号：US11510729

申请日：2006-08-28

申请人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

发明人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

IPC分类号： H04B10/00

CPC分类号： H04B10/66 ,  H04L27/223

摘要： An optical signal reception device is disclosed that receives and demodulates an optical signal modulated by DQPSK and performs logical inversion and other controls to transit to the object reception state. The signal reception device includes a front end including a delay interferometer and an opto-electric conversion element that receive the DQPSK optical signal and convert it into an in-phase signal and a quadrature-phase signal, a clock regenerator that regenerates a clock signal based on the in-phase signal and the quadrature-phase signal, a multiplexer that multiplexes the in-phase signal and the quadrature-phase signal, a reception frame processing unit that detects frame synchronization based on the signal multiplexed by the multiplexer and de-maps the received frames, and a controller that, based on out-of-frame-synchronization information (LOF/OOF) from the reception frame processing unit, performs logical inversion control in the clock regenerator, multiplexing timing control in the multiplexer, and controls the delay interferometer in the front end so as to transit to the object reception state.

摘要翻译： 公开了一种光信号接收装置，其接收并解调由DQPSK调制的光信号，并执行逻辑反转和其它控制以转接到对象接收状态。 信号接收装置包括前端，其包括延迟干涉仪和光电转换元件，其接收DQPSK光信号并将其转换为同相信号和正交相位信号，时钟再生器基于时钟信号再生 在同相信号和正交相位信号上，复用多路复用同相信号和正交相位信号的接收帧处理单元，其基于由多路复用器多路复用的信号和去映射来检测帧同步 接收帧，以及基于来自接收帧处理单元的帧外同步信息（LOF / OOF）执行时钟再生器中的逻辑反转控制的控制器，多路复用器中的复用定时控制，并且控制 延迟干涉仪在前端，以便转移到物体接收状态。