公开(公告)号：US20100221013A1

公开(公告)日：2010-09-02

申请号：US12688137

申请日：2010-01-15

申请人： Hiroki OOI ,  Hiroshi Onaka ,  George Ishikawa

发明人： Hiroki OOI ,  Hiroshi Onaka ,  George Ishikawa

IPC分类号： H04J14/02 ,  H04B10/02 ,  H04B10/18

CPC分类号： H04B10/2557 ,  H04J14/02

摘要： An optical transmission apparatus for suppressing deterioration of transmission quality due to XPM in a wavelength division multiplexing optical communication system in which an intensity modulation optical signal and a phase modulation optical signal exist in a mixed form. The apparatus has an intensity inversion signal light output section which outputs light having an intensity pattern obtained by inverting intensity changes of the intensity modulation optical signal near a wavelength of the intensity modulation optical signal in arrangement on wavelength axis of optical wavelengths that can be multiplexed as a wavelength division multiplexed signal as intensity inversion signal light, and a wavelength division multiplexed optical signal output unit which wavelength-division-multiplexes the intensity modulation optical signal, the phase modulation optical signal and light from the intensity inversion signal light output section and outputs a wavelength division multiplexed optical signal.

摘要翻译： 一种光传输装置，用于在混合形式存在强度调制光信号和相位调制光信号的波分复用光通信系统中抑制由XPM导致的传输质量的恶化。 该装置具有强度反转信号光输出部，其输出具有通过将强度调制光信号的波长附近的强度调制光信号的强度变化反转的强度图形输出的光配置在可以多路复用的光波长的波长轴上 波分多路复用信号作为强度反转信号光，以及波分复用光信号输出单元，其对强度调制光信号，相位调制光信号和强度反转信号光输出部分的光进行波分复用，并输出 波分复用光信号。

公开(公告)号：US07483639B2

公开(公告)日：2009-01-27

申请号：US09853323

申请日：2001-05-10

申请人： Takeshi Hoshida ,  Hiroshi Onaka ,  Takafumi Terahara

发明人： Takeshi Hoshida ,  Hiroshi Onaka ,  Takafumi Terahara

IPC分类号： H04B10/00

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：US20080250923A1

公开(公告)日：2008-10-16

申请号：US12078200

申请日：2008-03-27

申请人： Kenichi Mitsui ,  Tatsuo Suzuki ,  Tadanobu Ota ,  Takao Suzuki ,  Hiroshi Onaka ,  Yasunori Uchida

发明人： Kenichi Mitsui ,  Tatsuo Suzuki ,  Tadanobu Ota ,  Takao Suzuki ,  Hiroshi Onaka ,  Yasunori Uchida

IPC分类号： F16J9/00

CPC分类号： F02F3/12 ,  Y10T29/49249

摘要： A piston includes a piston body, an elastic adhesive layer, and a low thermal-conductivity sheet. The piston body has a piston top surface facing a combustion chamber, and exhibits a first thermal conductivity. The elastic adhesive sheet is formed on the piston top surface of the piston body, and includes a heat resistant resin. The low thermal-conductivity sheet is formed on the elastic adhesive layer, and exhibits a second thermal conductivity being lower than the first thermal conductivity of the piston body and falling in a range of from 5 or more to 40 W/m·K or less.

摘要翻译： 活塞包括活塞体，弹性粘合剂层和低热导率片。 活塞体具有面向燃烧室的活塞顶表面，并且呈现出第一导热性。 弹性粘合片形成在活塞体的活塞顶面上，并且包括耐热性树脂。 低导热性片材形成在弹性粘合剂层上，并且表现出比活塞体的第一热导率低的第二导热率并且落在5至40W / m.K以下的范围内。

公开(公告)号：US20080044011A1

公开(公告)日：2008-02-21

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： 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：US20070177151A1

公开(公告)日：2007-08-02

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 ,  Yasuyyki 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 ,  Yasuyyki Suzuki ,  Hideaki Arai ,  Satoshi Takasugi

IPC分类号： G01B9/02

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部件之间的线膨胀系数差等于或小于4.5×10 -6 /℃，PLC型干涉仪主体之间的热导率差 中间部件为10W / m·K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：US20070065161A1

公开(公告)日：2007-03-22

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。 相移单元提供一对臂之间的π/ 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：US07088922B2

公开(公告)日：2006-08-08

申请号：US10405936

申请日：2003-04-03

申请人： Hiroaki Tomofuji ,  Hiroshi Onaka ,  Terumi Chikama

发明人： Hiroaki Tomofuji ,  Hiroshi Onaka ,  Terumi Chikama

IPC分类号： H04J14/02 ,  H04B10/04

CPC分类号： H04Q11/0062 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0224 ,  H04J14/026 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0075

摘要： The present invention aims to provide a WDM optical communication system that can arrange efficiently optical signals of a plurality of bit rates at different wavelength spacing. To this end, for example, a basic constitution of a demultiplexing section to be applied to the WDM optical communication system of the present invention is provided with a demultiplexer that demultiplexes WDM signal light into 2m components in accordance with a plurality of wavelength regions set according to minimum wavelength spacing, 2m optical switches, each of which has one input port to which light from the demultiplexer is input, and a plurality of output ports, that selects one of the plurality of output ports to connect it to the input port, and m multiplexers that each multiplexes each output light of the 2m optical switches, wherein switching operations of the optical switches is set such that the bandwidth of each optical signal is approximately the same as the wavelength arrangement spacing corresponding to each bit rate.

公开(公告)号：US06941078B1

公开(公告)日：2005-09-06

申请号：US09853319

申请日：2001-05-10

申请人： Hiroshi Onaka

发明人： Hiroshi Onaka

IPC分类号： H04J1/00 ,  H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/12 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04B10/17 ,  H04J14/08 ,  H04L7/00

CPC分类号： H04L7/0075 ,  H04B10/2503 ,  H04B10/5051 ,  H04B10/506

摘要： A method and system for communicating a clock signal over an optical link includes receiving a multimodulated optical information signal including non-intensity modulation for a data signal and intensity modulation for a clock signal. The clock signal is recovered based on the intensity modulation of the multimodulated optical information signal. The non-intensity modulation for the data signal is converted to intensity modulation for the data signal. The data signal is recovered from the intensity modulation for the data signal using the clock signal.

摘要翻译： 用于通过光链路传送时钟信号的方法和系统包括接收包括数据信号的非强度调制和时钟信号的强度调制的多模式光信息信号。 基于多模光信息信号的强度调制恢复时钟信号。 将数据信号的非强度调制转换为数据信号的强度调制。 使用时钟信号从数据信号的强度调制中恢复数据信号。

公开(公告)号：US20050185885A1

公开(公告)日：2005-08-25

申请号：US10878619

申请日：2004-06-29

申请人： Miki Onaka ,  Etsuko Hayashi ,  Hiroshi Onaka

发明人： Miki Onaka ,  Etsuko Hayashi ,  Hiroshi Onaka

IPC分类号： G02B6/02 ,  G02B6/293 ,  G02B6/34 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/30 ,  H04J14/02 ,  H01S5/50

CPC分类号： H01S3/302 ,  G02B6/02085 ,  G02B6/29319 ,  G02B6/2938 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/094019 ,  H01S3/09408 ,  H01S3/094096 ,  H01S3/0941 ,  H04B10/291 ,  H04J14/02

摘要： An object of the invention is to provide an optical multiplexing method and an optical multiplexer, capable of fixing lights of different wavelengths at required wavelengths to stably multiplex them with a simple optical circuit configuration. To this end, in the present optical multiplexer, there is provided a tilted FBG, which is formed on an optical fiber through which a first light is propagated, with a grating direction thereof being tilted to an axial direction of the optical fiber, and has the sufficiently high reflectance to a second light (multiplexed light) of a wavelength different from that of the first light. The multiplexed light emitted from a light source is irradiated to the tilted FBG, via a free space from an angle direction determined according to a grating pitch of the tilted FBG and the wavelength of the multiplexed light, to be coupled within the optical fiber. Further, a low reflective FBG reflecting light coupled within the optical fiber is formed on the optical fiber, to achieve a resonance structure between the low reflective FBG and the light source, thereby stabling the wavelength of the multiplexed light.

摘要翻译： 本发明的目的是提供一种光复用方法和光复用器，其能够固定所需波长的不同波长的光以便以简单的光电路配置来稳定地多路复用它们。 为此，在本光传输器中，提供了一种倾斜的FBG，其形成在光纤上，第一光通过该光纤传播，其光栅方向与光纤的轴向倾斜，并且具有 与第一光不同的波长的第二光（复用光）具有足够高的反射率。 从光源发射的复用光经由自由空间从根据倾斜FBG的光栅间距确定的角度方向和复用光的波长照射到倾斜的FBG，以在光纤内耦合。 此外，在光纤上形成反射耦合在光纤内的光的低反射FBG，以实现低反射FBG和光源之间的谐振结构，从而稳定复用光的波长。

公开(公告)号：US06654561B1

公开(公告)日：2003-11-25

申请号：US09699479

申请日：2000-10-31

申请人： Takafumi Terahara ,  Takeshi Sakamoto ,  Hiroaki Tomofuji ,  Motoyoshi Sekiya ,  Makoto Murakami ,  Kazuo Yamane ,  Hiroshi Onaka

发明人： Takafumi Terahara ,  Takeshi Sakamoto ,  Hiroaki Tomofuji ,  Motoyoshi Sekiya ,  Makoto Murakami ,  Kazuo Yamane ,  Hiroshi Onaka

IPC分类号： H04B1008

CPC分类号： H04B10/07953 ,  H04B10/0799

摘要： In a method of measuring an optical signal-to-noise ratio according to the present invention, a partial optical signal-to-noise ratio is defined, the partial optical signal-to-noise ratio is calculated from a predetermined physical quantity, the sum of inverse numbers of the partial optical signal-to-noise ratios is calculated, and further an inverse number of the sum is calculated to acquire an optical signal-to-noise ratio. The present invention makes it possible to measure optical SNR without directly measuring ASE in the optical signal. The present invention provides a measuring apparatus, a measuring circuit, a pre-emphasis method, an optical communication system, and a controlling apparatus each utilizing this method.

摘要翻译： 在根据本发明的测量光信噪比的方法中，定义部分光信噪比，从预定物理量计算部分光信噪比，总和 计算出部分光信噪比的逆数，并且进一步计算和的逆数以获得光信噪比。 本发明使得可以在光信号中不直接测量ASE来测量光信噪比。 本发明提供一种使用该方法的测量装置，测量电路，预加重方法，光通信系统和控制装置。