公开(公告)号：US5200967A

公开(公告)日：1993-04-06

申请号：US763513

申请日：1991-09-20

申请人： Hideyuki Miyata ,  Hiroshi Onaka

发明人： Hideyuki Miyata ,  Hiroshi Onaka

IPC分类号： G01J9/02 ,  H01S5/00 ,  H01S5/062 ,  H01S5/0687

CPC分类号： H01S5/0687 ,  G01J9/02 ,  H01S5/0014 ,  H01S5/0622

摘要： The operating point is stabilized at the MAX or the MIN of its optical frequency discriminating characteristic. Under the stabilized operating point, the detected difference between the average of the light intensity and a set value is fed back to a data modulator so that the average value converges on a set value when a predetermined optical frequency deviation is produced. The operating point is also stabilized at the MED of said characteristic. Under the stabilized operating point, a low-frequency signal component is extracted from an electric signal output by means of synchronous detection. The operating point is stabilized at the MAX or the MIN of said characteristic. Under the stabilized operating point, a low-frequency signal component is twice in frequency by means of synchronous detection. In the fourth and fifth aspects, means such as synchronous detection is not required for the stabilization control of an operating point.

公开(公告)号：US4965858A

公开(公告)日：1990-10-23

申请号：US310628

申请日：1989-02-14

申请人： Takao Naito ,  Terumi Chikama ,  Shigeki Watanabe ,  Tetsuya Kiyonaga ,  Yoshihito Onoda ,  Hideo Kuwahara ,  Hiroshi Onaka ,  Hideyuki Miyata

发明人： Takao Naito ,  Terumi Chikama ,  Shigeki Watanabe ,  Tetsuya Kiyonaga ,  Yoshihito Onoda ,  Hideo Kuwahara ,  Hiroshi Onaka ,  Hideyuki Miyata

IPC分类号： G02F2/00 ,  H04B10/25 ,  H04B10/516 ,  H04B10/564 ,  H04B10/61

CPC分类号： H04B10/61 ,  H04B10/614 ,  H04B10/64

摘要： A polarized wave diversity optical receiver for coherent optical communication including: an optical local oscillating circuit (7) for oscillating local oscillating light; a mixing circuit (8) for mixing signal light and the local oscillating light to obtain two polarized components; a detecting circuit (9) for detecting the polarized component to output intermediate frequency signals (e.sub.S and e.sub.P); and a frequency control circuit (11) for controlling, in accordance with the intermediate frequency signals (e.sub.S and e.sub.P), the oscillating frequency of the optical local oscillating circuit (7). To ensure that the intermediate frequency does not disappear, the frequency control circuit (11) outputs a combined signal of a sum and a difference of the intermediate frequency signals (e.sub.S and e.sub.P).

公开(公告)号：US06462844B1

公开(公告)日：2002-10-08

申请号：US09236326

申请日：1999-01-25

申请人： Yutaka Kai ,  Hiroshi Onaka

发明人： Yutaka Kai ,  Hiroshi Onaka

IPC分类号： H04J1402

CPC分类号： H04B10/2525 ,  H04B10/25073 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/256

摘要： In a wavelength-division multiplexing transmission technique, a loss difference compensator for compensating a loss difference of an optical signal at each wavelength generated in a wavelength-division-multiplexed optical signal due to a wavelength-dependent transmission loss characteristic of an optical transmission line is disposed to the optical transmission line for transmitting the wavelength-division-multiplexed optical signal having a wide wavelength band in which optical signals at a plurality of wavelengths are wavelength-division-multiplexed to compensate the loss difference of the optical signal at each wavelength generated in the wavelength-division-multiplexed optical signal due to the wavelength-dependent transmission loss characteristic of the optical transmission line and a dispersion compensator, thereby transmitting the wavelength-division-multiplexed optical signal in a wide wavelength band for a long distance.

摘要翻译： 在波分复用传输技术中，由于光传输线路的波长相关的传输损耗特性，用于补偿在波分复用光信号中产生的每个波长的光信号的损耗差的损耗差补偿器是 配置在光传输线路上，用于传输具有宽波长带的波分复用光信号，其中多个波长的光信号被波分复用以补偿在每个波长处产生的每个波长的光信号的损耗差 由于光传输线的波长相关的传输损耗特性和色散补偿器导致的波分复用光信号，从而在宽波长带中长波长的波分复用光信号发射。

公开(公告)号：US07292787B1

公开(公告)日：2007-11-06

申请号：US09495708

申请日：2000-02-01

申请人： Yutaka Kai ,  Hiroshi Onaka ,  Yoshihiro Saito ,  Kazumasa Kubotera

发明人： Yutaka Kai ,  Hiroshi Onaka ,  Yoshihiro Saito ,  Kazumasa Kubotera

IPC分类号： H04B10/00

CPC分类号： G02F1/113 ,  G02F1/125 ,  G02F2001/0144 ,  G02F2201/58 ,  G02F2203/585 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/0219 ,  H04Q11/0005 ,  H04Q2011/0035 ,  H04Q2011/0039

摘要： The present invention relates to the selected-wavelength tuning apparatus which is provided with an AOTF, a radio-frequency signal generator, an optical detector, and a controller for detecting lights emitted from the AOTF with the optical detector and for controlling a frequency of the radio-frequency generator so as to detect a light of predetermined wavelength.

摘要翻译： 本发明涉及具有AOTF，射频信号发生器，光学检测器和控制器的选择波长调谐装置，该控制器用于利用光学检测器检测从AOTF发出的光，并且用于控制 射频发生器，以便检测预定波长的光。

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：US07822204B2

公开(公告)日：2010-10-26

申请号：US11525164

申请日：2006-09-22

申请人： Setsuo Yoshida ,  Osamu Hirota ,  Hiroshi Onaka

发明人： Setsuo Yoshida ,  Osamu Hirota ,  Hiroshi Onaka

IPC分类号： H04K1/00 ,  H04L9/00 ,  H04L9/28

CPC分类号： H04L1/0045 ,  H04L9/0662 ,  H04L9/0852 ,  H04L9/12 ,  H04L25/4917 ,  H04L2209/127

摘要： An encryption technique allowing use of classic Y-00 scheme performed using classic physical random numbers instead of quantum fluctuation in electrical communication and data storage in recording media, including a first modulation step for multilevel-modulating input data by associating with specific state pairs determined by physical random numbers, a second modulation step for outputting the output of the first step by irregularly associating with another signal by physical random numbers, and a channel coding step for channel-coding the output of the second step into desired codeword and outputting it as encrypted data, wherein the decoded signal obtained by channel-decoding the encrypted data can be discriminated which of specific state pairs the signal corresponds to and demodulated into the input data, and output by the first modulation by state pairs other than the specific state pairs and the second modulation by a physical random number different from the physical random number.

摘要翻译： 一种加密技术，允许使用经典的物理随机数而不是记录介质中的电气通信和数据存储中的量子波动执行的经典的Y-00方案，包括通过与通过与特定的状态对相关联的多电平调制输入数据的第一调制步骤 物理随机数，第二调制步骤，用于通过与物理随机数不同地与另一个信号相关联地输出第一步骤的输出;以及信道编码步骤，用于对第二步骤的输出进行信道编码为期望的码字，并将其输出为加密的 数据，其中通过对加密数据进行通道解码而获得的解码信号可以鉴别信号对应于哪个特定状态对并被解调成输入数据，并且通过除特定状态对之外的状态对通过第一调制输出， 通过与物理随机数不同的物理随机数进行二次调制 呃

公开(公告)号：US07769299B2

公开(公告)日：2010-08-03

申请号：US11475046

申请日：2006-06-27

申请人： Hiroki Ooi ,  Akira Miura ,  Hiroshi Onaka

发明人： Hiroki Ooi ,  Akira Miura ,  Hiroshi Onaka

IPC分类号： H04B10/12 ,  H04B10/00

CPC分类号： G01M11/333 ,  G01M11/338 ,  H04B10/07951 ,  H04B10/2513

摘要： A chromatic dispersion monitoring apparatus according to the present invention comprises: a photodetector which photo-electrically converts an optical signal; a low-pass filter which limits a frequency bandwidth of the photo-electrically converted electrical signal to be within a range set according to a modulation format of the optical signal and a bit rate thereof; a DC elimination circuit which eliminates a direct current component of the bandwidth limited electrical signal; and a power detector which detects the power of the bandwidth limited electrical signal to detect the residual dispersion of the optical signal. As a result, it becomes possible to easily realize the chromatic dispersion monitoring apparatus of low cost, which is also capable to be arranged on an in-line.

摘要翻译： 根据本发明的色散监视装置包括：光电转换光信号的光电检测器; 将光电转换电信号的频带宽度限制在根据光信号的调制格式及其比特率设定的范围内的低通滤波器; DC消除电路，其消除带宽受限电信号的直流分量; 以及功率检测器，其检测带宽受限电信号的功率，以检测光信号的残余色散。 结果，可以容易地实现也能够排列在一起的低成本的色散监视装置。

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.