公开(公告)号：US07336870B2

公开(公告)日：2008-02-26

申请号：US11362704

申请日：2006-02-28

申请人： Hiroki Ooi ,  Akira Miura ,  Takafumi Terahara ,  Ichiro Nakajima

发明人： Hiroki Ooi ,  Akira Miura ,  Takafumi Terahara ,  Ichiro Nakajima

IPC分类号： G02B6/28

CPC分类号： H04J14/0201 ,  H04B10/25133

摘要： An optical transmission system includes a first/second node with a first/second dispersion compensator that performs a first/second dispersion compensation on an optical signal; and a third node that is arranged between the first/second nodes. The amounts of the first/second dispersion compensations are determined so that a cumulative dispersion of the optical signal after the second dispersion compensation is within a predetermined range.

摘要翻译： 光传输系统包括具有第一/第二色散补偿器的第一/第二节点，其在光信号上执行第一/第二色散补偿; 以及布置在所述第一/第二节点之间的第三节点。 确定第一/第二色散补偿的量，使得第二色散补偿之后的光信号的累积色散在预定范围内。

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：US07245413B2

公开(公告)日：2007-07-17

申请号：US11527561

申请日：2006-09-27

申请人： Akira Miura ,  Kenji Uchida ,  Katsuya Ikezawa ,  Hiroyuki Matsuura ,  Akira Toyama ,  Toshiaki Kobayashi ,  Tsuyoshi Yakihara ,  Kousuke Doi

发明人： Akira Miura ,  Kenji Uchida ,  Katsuya Ikezawa ,  Hiroyuki Matsuura ,  Akira Toyama ,  Toshiaki Kobayashi ,  Tsuyoshi Yakihara ,  Kousuke Doi

IPC分类号： G02F1/03

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2202/20 ,  G02F2203/21

摘要： A light modulation apparatus including a Mach-Zehnder type light modulator, a driver for modulator outputting a control signal according to an input electric signal, a light branching circuit branching the output light signal, and a bias control circuit applying a bias voltage to the light modulator based on the branched light signal, the apparatus further comprises: a burst pause state detection circuit detecting a pause state of a burst signal included in the input electric signal; a photoelectric transducer converting an output light signal branched by the light branching circuit into an electric signal; a sampling circuit extracting the electric signal converted while the pause state is detected by the burst pause state; and a bias voltage adjustment circuit adjusting a bias voltage value of the bias voltage based on a voltage level of the extracted electric signal.

摘要翻译： 一种光调制装置，包括马赫 - 曾德尔型光调制器，用于根据输入电信号输出控制信号的调制器的驱动器，分支输出光信号的光分支电路和向该光施加偏置电压的偏置控制电路 基于分支光信号的调制器，该装置还包括：突发暂停状态检测电路，检测包括在输入电信号中的突发信号的暂停状态; 将由所述光分支电路分支的输出光信号转换成电信号的光电变换器; 抽取电路，提取在突发暂停状态下检测到暂停状态时转换的电信号; 以及偏置电压调整电路，其基于所提取的电信号的电压电平来调整所述偏置电压的偏置电压值。

公开(公告)号：US20070136815A1

公开(公告)日：2007-06-14

申请号：US11550089

申请日：2006-10-17

申请人： Akihiro KASAHARA ,  Akira Miura ,  Hiroshi Suu

发明人： Akihiro KASAHARA ,  Akira Miura ,  Hiroshi Suu

IPC分类号： H04N7/16

CPC分类号： H04N7/1675 ,  H04N21/2541 ,  H04N21/42646 ,  H04N21/4367 ,  H04N21/4405 ,  H04N21/4623 ,  H04N21/4627

摘要： There is provided a content data reproducing system that allows, in a user terminal adapted to be able to read a recording medium storing a content data encrypted with a predetermined encrypted key data, the content data to be reproduced after a CM data is reproduced. The system includes a CM data transmission portion that transmits the CM data to the user terminal in response to a request from the user terminal. When the sensing portion senses that the reproducing of the CM data has been completed in the user terminal, a permission portion permits the user terminal to use the encrypted key data to decrypt and reproducing the content data.

摘要翻译： 提供了一种内容数据再现系统，其在适于能够读取存储用预定加密密钥数据加密的内容数据的记录介质的用户终端中，允许在再现CM数据之后要再现的内容数据。 该系统包括CM数据传输部分，其响应于来自用户终端的请求将CM数据发送到用户终端。 当感测部分感测到在用户终端中完成了CM数据的再现时，许可部分允许用户终端使用加密的密钥数据来解密和再现内容数据。

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：US20070047964A1

公开(公告)日：2007-03-01

申请号：US11301325

申请日：2005-12-13

申请人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida

发明人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida

IPC分类号： H04B10/12

CPC分类号： H04B10/66

摘要： An optical receiving apparatus sets, efficiently and optimally, a delay interferometer and a variable wavelength dispersion compensator in the apparatus. The apparatus has a variable dispersion compensation unit performing variably dispersion compensation on a received optical signal, a delay interference unit performing a delay interference process on the optical signal from the variable dispersion compensation unit, a photoelectric conversion detecting unit performing photoelectric conversion detection on the optical signal from the delay interference unit and outputting an electric signal demodulated from the differential M-ary phase modulated optical signal, a clock signal extracting unit extracting a clock signal from the demodulated electric signal fed from the photoelectric conversion detecting unit, and a dispersion compensation controlling unit controlling a dispersion compensation amount in the variable dispersion compensation unit on the basis of the clock signal extracted by the clock signal extracting unit.

摘要翻译： 一种光接收装置，在设备中有效和最佳地设置延迟干涉仪和可变波长色散补偿器。 该装置具有对接收的光信号进行可变色散补偿的可变色散补偿单元，对来自可变色散补偿单元的光信号执行延迟干扰处理的延迟干扰单元，在光学上执行光电转换检测的光电转换检测单元 来自延迟干扰单元的信号，并输出从差分M相相位调制光信号解调的电信号;时钟信号提取单元，从从光电转换检测单元馈送的解调电信号中提取时钟信号;以及色散补偿控制 基于由时钟信号提取单元提取的时钟信号，单元控制可变色散补偿单元中的色散补偿量。

公开(公告)号：US20070047957A1

公开(公告)日：2007-03-01

申请号：US11502534

申请日：2006-08-11

申请人： Shinji Iio ,  Masayuki Suehiro ,  Katsuya Ikezawa ,  Akira Miura ,  Sadaharu Oka ,  Chie Sato ,  Mamoru Hihara ,  Tsuyoshi Yakihara ,  Shin-ichi Nakajima ,  Morio Wade ,  Daisuke Hayashi ,  Shinji Kobayashi ,  Yoshiyuki Asano

发明人： Shinji Iio ,  Masayuki Suehiro ,  Katsuya Ikezawa ,  Akira Miura ,  Sadaharu Oka ,  Chie Sato ,  Mamoru Hihara ,  Tsuyoshi Yakihara ,  Shin-ichi Nakajima ,  Morio Wade ,  Daisuke Hayashi ,  Shinji Kobayashi ,  Yoshiyuki Asano

IPC分类号： H04B10/20

CPC分类号： H04J14/0227 ,  H04J14/0201 ,  H04J14/0221 ,  H04J14/0241 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0284 ,  H04Q11/0062 ,  H04Q11/0066 ,  H04Q2011/0049 ,  H04Q2011/0092

摘要： An optical packet network system of a ring type, capable of preventing degradation of an optical signal, can be implemented by providing a mechanism relatively simple in structure, capable of erasing light noise if the optical packet signal does not exists. In the optical packet network system made up by interconnecting respective nodes adjacent to each other, and connecting a sending source of an optical packet signal to a ring, a light noise removal function block is provided between the respective nodes adjacent to each other.

摘要翻译： 可以通过提供一种结构相对简单的机构来实现能够防止光信号劣化的环形光分组网络系统，如果光分组信号不存在则能够擦除光噪声。 在通过互相相邻的各个节点互连并将光分组信号的发送源连接到环的光分组网络系统中，在彼此相邻的相应节点之间提供光噪声去除功能块。

公开(公告)号：US20060263097A1

公开(公告)日：2006-11-23

申请号：US11256128

申请日：2005-10-24

申请人： Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara

发明人： Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara

IPC分类号： H04B10/04

CPC分类号： H04B10/5561 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50595 ,  H04B10/5162 ,  H04B10/5165

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（pi / 2）。 在其中一个光信号上叠加低频信号f 0 0。 将相位从低频信号f 0 0 <0>移位π/ 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2f 0 0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f 0 0分量成为最小。

公开(公告)号：US07116856B2

公开(公告)日：2006-10-03

申请号：US10901173

申请日：2004-07-29

申请人： Shinji Iio ,  Masayuki Suehiro ,  Shin-ichi Nakajima ,  Yoshiyuki Asano ,  Chie Sato ,  Akira Miura ,  Tsuyoshi Yakihara ,  Shinji Kobayashi ,  Sadaharu Oka

发明人： Shinji Iio ,  Masayuki Suehiro ,  Shin-ichi Nakajima ,  Yoshiyuki Asano ,  Chie Sato ,  Akira Miura ,  Tsuyoshi Yakihara ,  Shinji Kobayashi ,  Sadaharu Oka

IPC分类号： G02B6/26

CPC分类号： G02F1/3138 ,  G02B2006/12173 ,  G02F1/293

摘要： A matrix optical switch that can switch the transmission path of an optical signal without requiring a driving unit for each optical switch is realized. A matrix optical switch for switching a transmission path of an optical signal by connecting plural input sides and plural output sides, respectively, comprises: a semiconductor optical waveguide substrate; a photo mask choosing system for selecting and arranging one photo mask from plural photo masks each of which has printed thereon a pattern connecting plural input sides to plural output sides; and a light source for casting output light having larger energy than a band gap of the semiconductor optical waveguide substrate onto a photon injection area between the plural input sides and the plural output sides on the semiconductor optical waveguide substrate via the selected photo mask.

摘要翻译： 实现了可以切换光信号的传输路径而不需要每个光开关的驱动单元的矩阵光开关。 用于通过连接多个输入侧和多个输出侧来切换光信号的传输路径的矩阵光开关包括：半导体光波导基片; 一种光掩模选择系统，用于从多个照相掩模中选择和布置一个照片掩模，每个照片掩模上印有将多个输入侧连接到多个输出侧的图案; 以及用于将具有比半导体光波导基板的带隙更大的能量的输出光通过所选择的光掩模投射到半导体光波导基板上的多个输入侧和多个输出侧之间的光子注入区域上的光源。

公开(公告)号：US20060098981A1

公开(公告)日：2006-05-11

申请号：US11092547

申请日：2005-03-29

申请人： Akira Miura ,  Hiroki Ooi ,  Takeshi Hoshida ,  Takafumi Terahara

发明人： Akira Miura ,  Hiroki Ooi ,  Takeshi Hoshida ,  Takafumi Terahara

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/003 ,  H04Q2011/0032

摘要： An optical transmitting apparatus is configured such that K pieces of output ports of optical path switching units whose input port is connected to k-th input transmission path are connected to first to K-th output transmission paths except for the k-th output transmission path and to the k-th input port of a dropping unit, and the optical path switching units and the dropping unit outputs light of wavelength which is part or all of WDM light received from said input port from a specific output port, and can output light having a wavelength different from that of the light output from said specific output port from an output port different from said specific output port. Accordingly, while largely reducing the number of optical fiber patch cords necessary in an optical transmitting apparatus and largely reducing the number of spare ports, the flexible expansion of apparatus function can be realized.