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1. 发明专利

JPH1152313A OPTICAL MODULATION DEVICE 失效
公开(公告)号：JPH1152313A
公开(公告)日：1999-02-26
申请号：JP21377797
申请日：1997-08-08
申请人： MITSUBISHI ELECTRIC CORP , KOKUSAI DENSHIN DENWA CO LTD
发明人： KAMIMURA ARITOMO , MIZUOCHI TAKASHI , SHIMIZU KATSUHIRO , MATSUSHITA KIWAMU , KITAYAMA TADAYOSHI , SUZUKI MASATOSHI , TAGA HIDENORI , YAMAMOTO SHU
IPC分类号： G02F1/03 , H04B10/07 , H04B10/516 , H04B10/54 , H04B10/548 , H04B10/58 , H04B10/61 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152
摘要： PROBLEM TO BE SOLVED: To synthesize an intensity modulation signal and a phase modulation signal with simple constitution and low loss and to enable the formation of the driving signal of an optical modulator by branching the light carrier from a light source, optically modulating the branched light carriers with plural synthesis signals, joining the modulated light carriers and outputting the optical modulation signal. SOLUTION: A 180 deg. hybrid 16 which is a two-input two-output passive circuit branches the inputted intensity modulation signal to a first electric signal of an in-phase and a second electric signal of an antiphase and branches the phase modulation signal inputted to another input terminal to third and fourth electric signals of the in-phase. The synthesis signal of the first and fourth electric signals and the synthesis signals of the second and third electric signals are outputted. The optical modulator 1 of a two-electrode LN-MZ type branches the light carrier from the light source 15 outputting the light of specified intensity and optically modulates the branched two light carriers by the two synthesis signals from the 180 deg. hybrid 16, joins the modulated two light carriers and outputs the optical modulation signal.

2. 发明专利

JPH10336154A LIGHT PULSE POSITION DETECTOR CIRCUIT, LIGHT PULSE GENERATOR AND THEIR METHODS 失效
公开(公告)号：JPH10336154A
公开(公告)日：1998-12-18
申请号：JP21421597
申请日：1997-08-08
申请人： MITSUBISHI ELECTRIC CORP , KOKUSAI DENSHIN DENWA CO LTD
发明人： SHIMIZU KATSUHIRO , MIZUOCHI TAKASHI , KOMIYA TAKESHI , MATSUSHITA KIWAMU , KITAYAMA TADAYOSHI , SUZUKI MASATOSHI , TAGA HIDENORI , YAMAMOTO SHU , EDAKAWA NOBORU , MORITA ITSURO
IPC分类号： G01J11/00 , G02F1/01 , G02F1/03 , H04J14/08
摘要： PROBLEM TO BE SOLVED: To output a light pulse having a short width. SOLUTION: This circuit is provided with a light source 26 which outputs an optical signal, an oscillator 5 that outputs an electric clock signal, a 1st optical modulator 3a which performs intensity modulation of the optical signal with an electric clock signal, a phase shifter 4 that shifts the phase of an electric clock signal, a 2nd optical modulator 3b which performs intensity modulation of an optical signal from the 1st optical modulator with the electric clock signal that undergoes phase shifting, an optical demultiplexer 2 which branches an output of the modulator 3b, a photodetector 8 which converts a demultiplexed optical signal into an electric signal, a dither signal generator circuit 11 that outputs a dither signal, a phase comparator 12 that performs synchronous detection of an output of the photodetector and the dither signal, and a phase shifter control circuit 9 which controls a phase shift amount of the phase shifter. The phase shifter control circuit receives a dither signal and an output of the phase comparator as input signals and controls the phase shifter so as to maximize the output of the photodetector.

3. 发明专利

JP2012019536A Optical receiver 有权
标题翻译：光接收机
公开(公告)号：JP2012019536A
公开(公告)日：2012-01-26
申请号：JP2011186185
申请日：2011-08-29
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ABE JUNICHI , SUGIHARA TAKASHI , SHIMIZU KATSUHIRO
IPC分类号： H04B10/60 , H04B10/40 , H04B10/50 , H04B10/524 , H04B10/66 , H04B10/69 , H04L25/03
摘要： PROBLEM TO BE SOLVED: To provide an optical receiver in which occurrence of separation penalty due to a light separation part is prevented, dependency on the modulation system is eliminated, and easiness is ensured in packaging.SOLUTION: The optical receiver comprises: a light separation part (11) which separates an optical input signal to multiple paths; photoelectric conversion units (12a and 12b) which convert the separated optical input signals into electric signals; discriminators (13a and 13b) which output the results of discrimination performed on the electric signals output from the photoelectric conversion units (12a and 12b) based on predetermined thresholds (V,V); and an operational circuit (14) which performs a predetermined arithmetic operation based on the results of discrimination output from the discriminators (13a and 13b).
摘要翻译：要解决的问题：为了提供防止由于光分离部分产生分离罚分的光接收器，消除了对调制系统的依赖性，并且在包装中确保了容易度。光接收机包括：光分离部分（11），其将光输入信号分离成多个路径; 将分离的光输入信号转换为电信号的光电转换单元（12a和12b）基于预定的阈值（V th1 ，V“）输出对从光电转换单元（12a和12b）输出的电信号执行的鉴别结果的鉴别器（13a和13b） SB POS =“POST”> th2 ）; 以及基于从识别器（13a和13b）输出的鉴别结果执行预定算术运算的运算电路（14）。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2011254379A Optical receiver, optical communication system, and optical signal reception method 审中-公开
标题翻译：光接收机，光通信系统和光信号接收方法
公开(公告)号：JP2011254379A
公开(公告)日：2011-12-15
申请号：JP2010127880
申请日：2010-06-03
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SAWADA KAZUSHIGE , ISHIDA KAZUYUKI , SUGIHARA TAKASHI , SHIMIZU KATSUHIRO
IPC分类号： H04B10/40 , G02F1/01 , H04B10/07 , H04B10/50 , H04B10/516 , H04B10/548 , H04B10/58 , H04B10/60 , H04B10/61 , H04B10/66
摘要： PROBLEM TO BE SOLVED: To provide an optical receiver, an optical communication system, and an optical signal reception method capable of preventing a bias control voltage of a mach-zehnder interferometer from converging to a wrong bias point and suppressing degradation of signal quality.SOLUTION: The optical receiver, the optical communication system, and the optical signal reception method comprises: optical transmission characteristic control means to calculate a bias control voltage so that an optical transmission characteristic of a mach-zehnder interferometer becomes a desired value; fixing means to fix the calculated bias control voltage; and dispersion compensation amount decision means to determine a dispersion compensation amount which compensates a dispersion of the received optical signal while the bias control voltage is in a fixed state, and adjust the bias control voltage based on an output of synchronous detection means by making the fixed bias control voltage variable after the dispersion compensation amount is determined.
摘要翻译：要解决的问题：提供一种能够防止马赫 - 泽德干涉仪的偏置控制电压收敛到错误偏置点并抑制信号劣化的光接收机，光通信系统和光信号接收方法质量。解决方案：光接收机，光通信系统和光信号接收方法包括：光传输特性控制装置，用于计算偏置控制电压，使得马赫 - 泽德干涉仪的光传输特性成为期望值; 固定装置，用于固定所计算的偏置控制电压; 以及色散补偿量判定装置，用于确定在偏置控制电压处于固定状态时补偿所接收的光信号的色散的色散补偿量，并且通过使固定的方式基于同步检测装置的输出来调整偏置控制电压确定色散补偿量后的偏置控制电压可变。版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2008124893A Variance pre-equalization optical transmitter and optical communication system 有权
标题翻译：变量均衡光传输和光通信系统
公开(公告)号：JP2008124893A
公开(公告)日：2008-05-29
申请号：JP2006307973
申请日：2006-11-14
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SUGIHARA TAKASHI , SHIMIZU KATSUHIRO , KONISHI YOSHIAKI , MIZUOCHI TAKASHI
IPC分类号： H04B10/2507 , H04B10/07 , H04B10/25 , H04B10/516 , H04B10/54 , H04B10/548 , H04B10/61
摘要： PROBLEM TO BE SOLVED: To perform positive, negative variance pre-equalization even without holding an amount of data beforehand by switching a control point of optical phase adjustment in response to a code of a pre-equalized variance amount.
SOLUTION: A variance pre-equalization optical transmitter comprises a variance pre-equalization data generating means 17 to which transmission source data stream is input and which performs inverse function operation on a wavelength variance of a transmission line on which the transmission source data stream is transmitted, and outputs resultant data of two streams as a driving signal; MZ type optical modulation units 12a, 12b which use the driving signal output from the variance pre-equalization data generating means 17 to generate first and second photo-electric fields which are orthogonal with each other, from branched light input from a light source 10 via a light branching means 11, and an optical phase adjustment unit 13 which controls a relative phase difference between the first and the second photo-electric fields by shifting phases just by a set shift amount, wherein a setting value of the shift amount in the optical phase adjustment unit 13 is switched, thereby varying the code of the variance pre-equalization amount.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过响应于预均衡方差量的代码切换光相位调整的控制点，即使不预先保持数据量也能执行正，负方差预均衡。解决方案：方差预均衡光发射机包括方差预均衡数据产生装置17，传输源数据流被输入到该方差预均衡数据产生装置17，并且对发射源数据的传输线的波长方差执行反功能操作发送流，并输出两个流的结果数据作为驱动信号; MZ型光调制单元12a，12b，其使用从方差预均衡数据产生装置17输出的驱动信号，从分别从光源10输入的分支光生成彼此正交的第一和第二光电场，经由光分支装置11和光学相位调整单元13，其通过移位相位刚刚设定偏移量来控制第一和第二光电场之间的相对相位差，其中光学位移量的设定值相位调整单元13被切换，从而改变方差预均衡量的代码。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2007266688A Optical receiver and control method of optical interferometer 有权
标题翻译：光学接收器和光学干涉仪的控制方法
公开(公告)号：JP2007266688A
公开(公告)日：2007-10-11
申请号：JP2006085367
申请日：2006-03-27
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MITANI SHUNSUKE , ISHIDA KAZUYUKI , SHIMIZU KATSUHIRO
IPC分类号： H04B10/516 , H04B10/07 , H04B10/548 , H04B10/58 , H04B10/61
摘要： PROBLEM TO BE SOLVED: To obtain an optical receiver in which the operating point can be judged by using only the output from one synchronous detection circuit, and to provide a control method of an optical interferometer.
SOLUTION: The optical receiver comprises a dither signal source 5 generating a low rate sync signal, a Mach-Zehnder type interferometer 3 which forms interference light having transmission characteristics from phase modulated light or frequency modulated light and outputs an optical signal superposing a low rate period signal, a dither signal conversion means 6 for doubling the frequency of the low rate period signal to form a double frequency signal having a phase changed to (1/2+N)π (N is an integer of 1 or above), a section 4 for converting the optical signal superposing a low rate period signal into an electric signal, a first synchronous detection circuit 7 performing synchronous detection of an electric signal based on the low rate period signal superposed thereon by using the double frequency signal as a reference signal, and an operating point setting circuit 8 for feeding back the transmission characteristics of the optical signal such that the synchronous detection output has a zero or a predetermined value.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了获得其中可以仅使用来自一个同步检测电路的输出来判断工作点的光接收机，并提供光干涉仪的控制方法。解决方案：光接收机包括产生低速同步信号的抖动信号源5，具有相位调制光或频率调制光的传输特性的干涉光的马赫 - 曾德尔型干涉仪3，并输出叠加低速率周期信号，用于使低速率周期信号的频率倍增以形成相位变为（1/2 + N）π（N为1或更大的整数）的双频信号的抖动信号转换装置6，，用于将叠加低速率周期信号的光信号转换为电信号的部分4;基于叠加在其上的低速率周期信号执行电信号的同步检测的第一同步检测电路7，通过使用双频信号作为参考信号，以及用于反馈光信号的传输特性使得同步检测输出的工作点设置电路8 具有零或预定值。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2006295603A Optical receiver 有权
标题翻译：光接收机
公开(公告)号：JP2006295603A
公开(公告)日：2006-10-26
申请号：JP2005114503
申请日：2005-04-12
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ISHIDA KAZUYUKI , SHIMOMURA KENKICHI , SHIMIZU KATSUHIRO
IPC分类号： H04B10/40 , H04B10/07 , H04B10/50 , H04B10/516 , H04B10/548 , H04B10/60 , H04B10/61
摘要： PROBLEM TO BE SOLVED: To obtain an optical receiver capable of precosely and correctly decoding two data signals.
SOLUTION: The optical receiver is provided with: an optical coupler 2 for branching a DQPSK (Differential Quadrature Phase Shift Keying) signal, two one-bit delay interferometers 3, 4 for decoding the DQPSK signal; two differential light receivers 5, 6 for respectively performing the photoelectric conversion of optical signals from the two one-bit delay interferometers 3, 4; two discriminators 7, 8 for respectively discriminating signals photoelectrically converted by the two differential light receivers 5, 6; a logic-tributary decision circuit 12 for judging the logic and tributary information of data discriminated by the discriminator 7; a phase control part 9 for controlling the one-bit delay interferometer 3 on the basis of a control signal obtained from an error signal detected by branching an output from the differential light receiver 5 and the logic and tributary information of the data discriminated by the discriminator 7; and a phase control part 15 for controlling the one-bit interferometer 4 on the basis of a control signal obtained by adding fixed voltage to the control signal of the phase control part 9.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：获得能够对两个数据信号进行预先正确解码的光接收机。解决方案：光接收器设置有：用于分支DQPSK（差分正交相移键控）信号的光耦合器2，用于解码DQPSK信号的两个1位延迟干涉仪3,4; 两个差分光接收器5,6用于分别执行来自两个1位延迟干涉仪3,4的光信号的光电转换; 用于分别鉴别由两个差分光接收器5,6进行光电转换的信号的两个鉴别器7,8; 用于判断由鉴别器7识别的数据的逻辑和支路信息的逻辑支路判决电路12; 相位控制部分9，用于根据从差分光接收机5的输出分支检测到的误差信号获得的控制信号和由鉴别器鉴别的数据的逻辑和支路信息来控制一位延迟干涉仪3 7; 以及相位控制部分15，用于基于通过将相位控制部分9的控制信号加上固定电压而获得的控制信号来控制一位干涉仪4.（C）2007年，JPO和INPIT

8. 发明专利

JP2006060734A Optical transmission system 审中-公开
标题翻译：光传输系统
公开(公告)号：JP2006060734A
公开(公告)日：2006-03-02
申请号：JP2004243289
申请日：2004-08-24
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAMIMURA ARITOMO , SHIMOKASA KIYOSHI , ABE JUNICHI , SHIMIZU KATSUHIRO , KOBAYASHI YUKIO
IPC分类号： H04B1/74 , H04B10/03 , H04B10/032 , H04B10/07 , H04B10/071 , H04B10/077 , H04J14/00 , H04J14/02 , H04L12/707
摘要： PROBLEM TO BE SOLVED: To obtain a reliable redundant optical transmission apparatus which is capable of high-speed communication with reduced light loss and simple configuration.
SOLUTION: The optical transmission system comprises a transmitting terminal for outputting an optical signal to an optical transmission line, an optical relay section for relaying the optical signal from the transmitting terminal, a receiving terminal for receiving the optical signal relayed by the optical relay section, and a monitoring section for monitoring the optical transmission line and outputting a result of monitoring. In the optical transmission system, the optical transmission line includes a plurality of first-half optical transmission lines each connected to the transmitting terminal and the optical relay section for transmitting the optical signal, and two or more latter-half optical transmission lines each connected to the optical relay section and the receiving terminal for transmitting the optical signal, and is made redundant in each of the first half and the latter half. The transmitting terminal outputs an optical signal of a wavelength corresponding to one of the plurality of first-half transmission lines in accordance with the result of monitoring and for the optical relay section, the latter-half optical transmission line to be the output destination of the optical signal is predetermined in accordance with the wavelength of the optical signal transmitted for each of the plurality of first-half optical transmission lines.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了获得能够以减少的光损失和简单结构进行高速通信的可靠的冗余光传输装置。光传输系统包括用于向光传输线路输出光信号的发送终端，用于中继来自发送终端的光信号的光中继部，用于接收光信号中继的光信号的接收端继电器部分和用于监视光传输线并输出监视结果的监视部分。在光传输系统中，光传输线包括多个连接到发送端的前半个光传输线和用于发送光信号的光中继部，以及两个或更多个后半个光传输线，每个连接到光学继电器部分和用于发送光信号的接收终端，并且在前半部分和后半部分中的每一个中被制成冗余。发送端子根据监视结果输出与多个前半个传输线中的一个相对应的波长的光信号，对于光中继部，将后半光传输线作为输出目的地光信号根据为多个前半个光传输线路中的每一个传输的光信号的波长而被预先确定。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005347941A Optical branching and inserting device, optical branching and inserting device body, wavelength multiplex transmission system and method for controlling wavelength multiplex transmission system 有权
标题翻译：光学分支和插入设备，光学分支和插入设备体，波长多路传输系统和控制波长多路传输系统的方法
公开(公告)号：JP2005347941A
公开(公告)日：2005-12-15
申请号：JP2004163370
申请日：2004-06-01
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAJIYA SATORU , NAKAGAWA JUNICHI , SHIMIZU KATSUHIRO
IPC分类号： H04B10/2507 , H04B10/07 , H04B10/2513 , H04B10/27 , H04B10/29 , H04B10/02 , H04B10/18
摘要： PROBLEM TO BE SOLVED: To obtain an optical branching and inserting device which respectively control transmission wavelength of a plurality of wavelength multiplexed signal light for each wavelength and improving transmission characteristic deterioration.
SOLUTION: This optical branching and inserting device has: an optical demultiplexing means 4 for demultiplexing wavelength multiplex signal light inputted an input side optical fiber transmission line 2a; an optical receiver 6 for receiving desired wavelength signal light among the plurality of signal light demultiplexed by the optical demultiplexing means 4 and outputting an obtained received signal as a feedback signal to an upstream side optical branching and inserting device; an optical transmitter 5 for performing fine adjustment so as not to deteriorate the transmission characteristic of the desired wavelength signal light and outputting the signa light on the basis of a feedback signal transmitted from a downstream side optical branching and inserting device; and an optical demultiplexing means 3 for performing wavelength multiplexing of transmission signal light that passes through from the optical demultiplexing means 4 and the signal light outputted by the optical transmitter 5 and outputting a generated wavelength multiplex signal light to an output side optical fiber transmission line 2b.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：为了获得分别控制各波长的多个波长复用信号光的透射波长并提高透射特性劣化的光分路插入装置。解决方案：该光分路和插入装置具有：光解复用装置4，用于对输入的输入侧光纤传输线2a的波分复用信号光进行解复用; 光接收器6，用于接收由光解复用装置4解复用的多个信号光中的所需波长信号光，并将获得的接收信号作为反馈信号输出到上游侧光分路和插入装置; 光发送器5，用于执行微调以不劣化所需波长信号光的透射特性，并根据从下游侧光分路插入装置发送的反馈信号输出信号灯; 以及光解复用装置3，用于对从光解复用装置4通过的发送信号光和由光发射机5输出的信号光执行波长多路复用，并将产生的波长多路复用信号光输出到输出侧光纤传输线2b 。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005222083A Optical pulse generating apparatus and method for generating optical pulse 审中-公开
标题翻译：光学脉冲发生装置和产生光学脉冲的方法
公开(公告)号：JP2005222083A
公开(公告)日：2005-08-18
申请号：JP2005116374
申请日：2005-04-14
申请人： Kddi Corp , Kddi株式会社 , Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SHIMIZU KATSUHIRO , MIZUOCHI TAKASHI , KOMIYA TAKESHI , MATSUSHITA KIWAMU , KITAYAMA TADAYOSHI , SUZUKI MASATOSHI , TAGA HIDENORI , YAMAMOTO SHU , EDAKAWA NOBORU , MORITA ITSURO
IPC分类号： G02F1/017 , G02F1/015
摘要： PROBLEM TO BE SOLVED: To obtain an optical pulse position detection circuit which detects the pulse position without using a complicated operational circuit. SOLUTION: The pulse generator includes: a light source 26 to output an optical signal; an oscillator 5 to output an electric clock signal; a first optical modulator 3a to modulate the intensity of the optical signal by the electric clock signal; a phase shifter 4 to shift the phase of the electric clock signal; a second optical modulator 3b to modulate the intensity of the optical signal from the first optical modulator by the phase-shifted electric clock signal; an optical demultiplexer 2 to demultiplex the output of the second optical modulator; an photodetector 8 to convert the demultiplexed optical signal into an electric signal; a dither signal generating circuit 11 to output a dither signal; a phase comparator 12 to synchronously detect the output of the photodetector and the dither signal; and a phase shifter controlling circuit 9 to control the phase shift degree of the phase shifter. The phase shifter control circuit receives the dither signal and the output of the phase comparator and controls the phase shifter to maximize the output of the photodetector. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：获得在不使用复杂的操作电路的情况下检测脉冲位置的光脉冲位置检测电路。
解决方案：脉冲发生器包括：光源26，用于输出光信号; 振荡器5，输出电时钟信号; 第一光调制器3a，用于通过电时钟信号调制光信号的强度; 移相器4，用于移位电时钟信号的相位; 第二光调制器3b，用于通过相移电时钟信号来调制来自第一光调制器的光信号的强度; 光解复用器2，用于对第二光调制器的输出进行解复用; 用于将解复用的光信号转换为电信号的光电检测器8; 抖动信号发生电路11输出抖动信号; 相位比较器12，用于同步检测光检测器的输出和抖动信号; 以及用于控制移相器的相移程度的移相器控制电路9。移相器控制电路接收抖动信号和相位比较器的输出，并控制移相器以使光电检测器的输出最大化。版权所有（C）2005，JPO＆NCIPI

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