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81. 发明专利

JP2008236512A Dispersion pre-equalizing optical transmitter 有权
标题翻译：分散式均衡光传输器
公开(公告)号：JP2008236512A
公开(公告)日：2008-10-02
申请号：JP2007074712
申请日：2007-03-22
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SUGIHARA TAKASHI , MIZUOCHI TAKASHI , SHIMIZU KATSUHIRO
IPC分类号： H04B10/2507 , G02F1/035 , H04B10/2525 , H04B10/293 , H04B10/564 , H04B10/572 , H04J14/00 , H04J14/02
摘要： PROBLEM TO BE SOLVED: To obtain a dispersion pre-equalizing optical transmitter which has a DC bias means and performs DC bias control, wherein the correction corresponding to a dispersion pre-equalizing quantity makes an optical modulation unit operate in optimum operation irrespective of the dispersion pre-equalizing quantity.
SOLUTION: The dispersion pre-equalizing optical transmitter includes a dispersion pre-equalization data generating means 20 of performing reverse function operation for the wavelength dispersion of an optical transmission line from a transmission source data series, according to a dispersion pre-equalization quantity set as a target to generate an optical modulation drive signal comprising a dispersion pre-equalization data sequence; an optical modulating means 21 which is interposed between a light source and the optical transmission line to perform modulation for dispersion pre-equalization on light from the light source according to the optical modulation drive signal; a DC bias control means 16 of controlling the DC bias setting of the optical modulating means directly or after superposing a DC level on the optical modulation drive signal; and a DC bias correcting means 17 of correcting a controlled variable of the DC bias control means according to the dispersion pre-equalization quantity set as the target.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了获得具有直流偏置装置并执行直流偏置控制的色散预均衡光发送器，其中对应于色散预均衡量的校正使得光调制单元在最佳操作中操作不用的分散预均衡量。解决方案：色散预均衡光发射机包括：色散预均衡数据产生装置20，用于根据色散预均衡对来自发射源数据序列的光传输线的波长色散执行反向功能操作数量被设置为用于产生包括色散预均衡数据序列的光调制驱动信号的目标; 光调制装置21，其插入在光源和光传输线之间，以根据光调制驱动信号对来自光源的光进行色散预均衡调制; 直流偏置控制装置16，用于直接控制光调制装置的直流偏置设置或在光调制驱动信号上叠加直流电平之后; 以及直流偏置校正装置17，其根据设定为目标的色散预均衡量校正直流偏置控制装置的受控变量。版权所有（C）2009，JPO＆INPIT

82. 发明专利

JP2008228048A Quantum communicator 有权
标题翻译：量子通讯器
公开(公告)号：JP2008228048A
公开(公告)日：2008-09-25
申请号：JP2007065114
申请日：2007-03-14
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ABE JUNICHI , SHIMIZU KATSUHIRO
IPC分类号： H04L9/12
摘要： PROBLEM TO BE SOLVED: To obtain an excellent quantum communicator which detects a classical channel of a strong light intensity, masks a gate bias of a quantum channel, and does not cause a performance degradation due to an excessive noise.
SOLUTION: The quantum communicator comprises: a multiplexing means 3 for multiplexing waves of the quantum channel and classical channel; a transmission path 4 for transmitting an optical signal having a wave multiplexed by the multiplexing means; an optical demultiplexing means 5 for demultiplexing the optical signal transmitted via the transmission path; a photon detecting means 6 for receiving the optical signal of the quantum channel of the optical signals demultiplexed by the optical demultiplexing means; a classical channel detecting means 7 for detecting the classical channel of the optical signals demultiplexed by the optical demultiplexing means; a mask signal generating means 8 for generating a mask signal based on a detection result of the classical channel detecting means; and a bias signal generating means 9 for masking a bias signal applied to the photon detecting means based on the mask signal.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题为了获得检测强光强度的经典通道的优良量子通信器，掩盖了量子通道的栅极偏置，并且不会由于过大的噪声而导致性能劣化。解决方案：量子通信器包括：多路复用装置3，用于复用量子信道和经典信道的波; 用于发送具有由多路复用装置复用的波的光信号的传输路径4; 光解复用装置5，用于对通过传输路径传输的光信号进行解复用; 用于接收由光解复用装置解复用的光信号的量子信道的光信号的光子检测装置6; 用于检测由光解复用装置解复用的光信号的经典信道的经典信道检测装置7; 掩模信号发生装置8，用于基于经典信道检测装置的检测结果产生掩码信号; 以及偏置信号发生装置9，用于基于掩模信号屏蔽施加到光子检测装置的偏置信号。版权所有（C）2008，JPO＆INPIT

83. 发明专利

JP2008219774A Optical phase modulation apparatus 有权
标题翻译：光学相位调制装置
公开(公告)号：JP2008219774A
公开(公告)日：2008-09-18
申请号：JP2007057437
申请日：2007-03-07
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MIYAHARA TOSHIJI , HATTA TATSUO , SHIMIZU KATSUHIRO
IPC分类号： H04B10/29 , G02F1/025 , H04B10/291 , H04B10/516 , H04B10/548 , H04B10/58 , H04B10/61
摘要： PROBLEM TO BE SOLVED: To provide an optical phase modulation apparatus simple in structure for phase-modulating an optical signal by means of a light intensity modulation signal to be inputted, without converting the optical signal into an electric signal.
SOLUTION: An optical phase modulation apparatus comprises: three incidence ports; one emission port; three arms; a first input waveguide connecting the three arms and one of the incidence ports; a second input waveguide connecting one of the arms and one of the incidence ports; a third input waveguide connecting one of the arms and one of the incidence ports; an output waveguide connecting the three arms and the emission port; semiconductor optical amplifiers disposed in the arms; and semiconductor phase adjusters disposed in two arms, respectively. The pulse train light of probe light is made incident to the incidence port connected to three arms, independent two signal beams intensity-modulated into binary are made incident to remaining two of the incidence ports, respectively, and the pulse train light of probe light quadrature phase-modulated by signal light is outputted from the emission port.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种结构简单的光相位调制装置，其不需要将光信号转换成电信号，而是通过要输入的光强度调制信号对光信号进行相位调制。解决方案：光相位调制装置包括：三个入射端口; 一个排放口; 三臂连接三个臂和一个入射端口的第一输入波导; 连接所述臂中的一个和所述入射端口中的一个的第二输入波导; 连接所述臂中的一个和所述入射端口中的一个的第三输入波导; 连接三个臂和排放口的输出波导; 设置在臂中的半导体光放大器; 和分别设置在两个臂中的半导体相位调节器。探测光的脉冲光入射到连接到三个臂的入射口，分别强制调制成二进制的独立的两个信号光束入射到剩余的两个入射端口，探针光正交的脉冲光束从发射端口输出信号光的相位调制。版权所有（C）2008，JPO＆INPIT

84. 发明专利

JP2007306248A Polarization separator, and optical receiver 有权
标题翻译：极化分离器和光接收器
公开(公告)号：JP2007306248A
公开(公告)日：2007-11-22
申请号：JP2006131840
申请日：2006-05-10
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ISHIDA KAZUYUKI , SHIMIZU KATSUHIRO
IPC分类号： H04J14/00 , H04J14/04 , H04J14/06
摘要： PROBLEM TO BE SOLVED: To efficiently obtain a control signal required for separating a polarization even when polarization relationships among respective frequencies are broken by the effect of a PMD in a polarization separator separating the polarization of a polarized multiplex optical signal. SOLUTION: The polarization separator has a polarization control unit 2 controlling the polarization state of the input polarized multiplex optical signal, and a polarization separator 3 polarization-separating the polarized multiplex optical signal output from the polarization control unit 2 into two light signals. Such a polarization separator has a narrow-band optical filter 8 extracting an optical output contained in a frequency band in the vicinity of an optical carrier by using either one branch output of two light signals separated by the polarization separator 3, and an orthogonal-relationship monitor 5 generating an error signal for separating the polarization on the basis of the polarization state of the extracted optical signal. Such the polarization separator further has a driver circuit 4 generating the control signal for controlling the polarization control unit 2 by using the error signal output from the orthogonal-relationship monitor 5. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使在分离偏振多路复用光信号的偏振的偏振分离器中的PMD的影响下，各频率之间的偏振关系被破坏时，也能有效地获得分离偏振所需的控制信号。解决方案：偏振分离器具有控制输入偏振多路复用光信号的偏振状态的偏振控制单元2和偏振分离器3，将从偏振控制单元2输出的偏振多路复用光信号偏振分成两个光信号。这种偏振分离器具有窄带滤光器8，通过使用由偏振分离器3分离的两个光信号的一个分支输出，提取包含在光学载体附近的频带中的光输出，并且正交关系监视器5产生用于基于所提取的光信号的偏振状态分离极化的误差信号。这样的偏振分离器还具有通过使用从正交关系监视器5输出的误差信号产生用于控制偏振控制单元2的控制信号的驱动电路4.（C）2008，JPO＆INPIT

85. 发明专利

JP2007267005A Phase comparator 有权
标题翻译：相位比较器
公开(公告)号：JP2007267005A
公开(公告)日：2007-10-11
申请号：JP2006089216
申请日：2006-03-28
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KOBAYASHI TATSUYA , TAGAMI HITOSHI , SHIMIZU KATSUHIRO , SHIMOMURA KENKICHI
IPC分类号： H04L7/02 , H03K5/26 , H03L7/091
CPC分类号： H03D13/003
摘要： PROBLEM TO BE SOLVED: To obtain a phase comparator compatible with both a full rate and a half rate. SOLUTION: This phase comparator is provided with a first detection means 1 for detecting the amplitude value of a clock signal in the falling timing of a data signal; a second detection means 2 for detecting the amplitude value of the clock signal in the rising timing of the data signal; an edge comparing means 3 for outputting a first identification result by identifying whether or not the amplitude value of the rising status or falling status of the clock signal is being detected by the first detection means 1, and for identifying whether or not the amplitude value of the rising statue or falling status of the clock signal is being detected by the second detection means 2, and for outputting the second identification result; a first polarity inverting means 4 for inverting the polarity of the output of the first detection means 1 according to the first identification result; a second polarity inverting means 5 for inverting the polarity of the output of the second detection means 2 according to the second identification result; and a signal selection means 6 for selecting and outputting the output value of the first or the second polarity inverting means 4 and 5 according to the polarity of the data signal. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：获得兼容全速率和半速率的相位比较器。解决方案：该相位比较器具有第一检测装置1，用于在数据信号的下降定时中检测时钟信号的振幅值; 第二检测装置2，用于在数据信号的上升定时中检测时钟信号的振幅值; 边缘比较装置3，用于通过识别第一检测装置1是否检测到时钟信号的上升状态或下降状态的振幅值来输出第一识别结果，并且用于识别是否有振幅值由第二检测装置2检测出时钟信号的上升的雕像或下降状态，并输出第二识别结果; 第一极性反转装置4，用于根据第一识别结果反转第一检测装置1的输出的极性; 第二极性反转装置5，用于根据第二识别结果反转第二检测装置2的输出的极性; 以及信号选择装置6，用于根据数据信号的极性来选择和输出第一或第二极性反转装置4和5的输出值。版权所有（C）2008，JPO＆INPIT

86. 发明专利

JP2007264651A Optical equalizer 有权
标题翻译：光学均衡器
公开(公告)号：JP2007264651A
公开(公告)日：2007-10-11
申请号：JP2007131762
申请日：2007-05-17
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SHIMIZU KATSUHIRO , SUGIHARA TAKASHI
IPC分类号： G02B6/02 , G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide an optical equalizer capable of generating a desired negative dispersion of a signal wavelength by applying a negative temperature gradient to a diffraction grating. SOLUTION: The optical equalizer is provided with: an input/output terminal which inputs and outputs an optical signal; an optical waveguide having a diffraction grating causing a Bragg reflection on the input optical signal from the input/output terminal; and a temperature gradient applying means which applies the negative temperature gradient in the propagating direction of the input optical signal of the optical waveguide. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过对衍射光栅施加负温度梯度来产生信号波长的期望负色散的光学均衡器。光学均衡器设置有：输入和输出光信号的输入/输出端子; 具有衍射光栅的光波导，其对来自输入/输出端子的输入光信号进行布拉格反射; 以及在光波导的输入光信号的传播方向上施加负温度梯度的温度梯度施加装置。版权所有（C）2008，JPO＆INPIT

87. 发明专利

JP2007133176A Light modulator and method of controlling bias therefor 有权
标题翻译：光调制器及其偏置控制方法
公开(公告)号：JP2007133176A
公开(公告)日：2007-05-31
申请号：JP2005326566
申请日：2005-11-10
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SUGIHARA TAKASHI , SHIMIZU KATSUHIRO
IPC分类号： G02F1/035 , G02F1/01 , G02F1/03 , H04B10/00 , H04B10/516 , H04B10/61
摘要： PROBLEM TO BE SOLVED: To automatically and stably control an optical phase is without using a dither superposition onto an optical phase adjustment part in a light modulator. SOLUTION: The light modulator is provided with: an optical modulation part 13a; an optical phase adjustment part 15 connected to an optical modulation part 13b; and an optical multiplex means 20 which multiplexes the output from the optical modulation part 13a and the output from the optical phase adjustment part 15. The light modulator is further provided with; a summation/differentiation frequency component generation means which generates a summation frequency component (f1+f2) and a differentiation frequency component (f1-f2) between low frequency dither signals f1 and f2 input while being superimposed on a modulation signal or a direct current bias each applied to the optical modulation parts 13a and 13b: light quantity variation detection means 17 and 18 which detect the light quantity variation in the summation/differentiation frequency components from the multiplexed output from the optical multiplex means 20; and a direct current bias control means 11c which controls the direct current bias of the optical phase adjustment part 15 on the basis of the output from the light quantity variation detection means 17 and 18. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了自动和稳定地控制光学相位，不使用光调制器中的光学相位调整部分上的抖动叠加。光调制器设置有：光调制部13a; 连接到光调制部分13b的光学相位调节部分15; 以及将光调制部13a的输出与光相位调整部15的输出进行复用的光复用单元20.光调制器还具备：求和/微分频率分量产生装置，其在叠加在调制信号或直流偏置上时产生低频抖动信号f1和f2输入之间的加和频率分量（f1 + f2）和微分频率分量（f1-f2）分别适用于光调制部13a，13b：从光多路复用单元20的复用输出检测求和/微分频分量中的光量变化的光量变化检测单元17,18; 以及直流偏置控制装置11c，其基于光量变化检测装置17和18的输出来控制光学相位调整部分15的直流偏压。（C）2007，JPO和INPIT

88. 发明专利

JP2003224521A WAVELENGTH MULTIPLEX OPTICAL TRANSMISSION SYSTEM 审中-公开
公开(公告)号：JP2003224521A
公开(公告)日：2003-08-08
申请号：JP2002020597
申请日：2002-01-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： KANESHIRO KAORU , MIZUOCHI TAKASHI , SHIMIZU KATSUHIRO , ISHIDA KAZUYUKI , KAJIYA SATORU , KOBAYASHI TATSUYA
IPC分类号： H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/23 , H04B10/2507 , H04B10/2513 , H04B10/2537 , H04B10/2557 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02 , H04B10/02 , H04B10/16 , H04B10/17 , H04B10/18
摘要： PROBLEM TO BE SOLVED: To easily realize a reduction in transmission characteristics deterioration due to cross-phase modulation that occurs in a wavelength multiplex optical transmission system. SOLUTION: A lumped constant type optical amplifier arranged at the input side of each relay section is used to optically amplify an optical signal, a first gain control part controls the gain of the lumped constant type optical amplifier, a distributed constant type optical amplifier that uses an optical fiber transmission line arranged on the output side of the each relay section as an amplification medium is used to optically amplify the optical signal, a second gain control part controls the gain of the distributed constant type optical amplifier, and a compensation control part controls the gain ratio of the first gain control part to that of the second gain control part, thereby canceling the amounts of blue chirping and red chirping due to cross-phase modulation that occurs between at least adjacent wavelength signals in one section of the each relay section in the optical fiber transmission line to reduce the amount of residual chirping. COPYRIGHT: (C)2003,JPO

89. 发明专利

JP2003032249A Optical communication system 有权
标题翻译：光通信系统
公开(公告)号：JP2003032249A
公开(公告)日：2003-01-31
申请号：JP2001213788
申请日：2001-07-13
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ABE JUNICHI , SHIMIZU KATSUHIRO , MIZUOCHI TAKASHI
IPC分类号： H04L9/38 , H04B10/00 , H04B10/275 , H04B10/524 , H04B10/556 , H04B10/70 , H04J14/08 , H04L9/12 , H04B10/24
摘要： PROBLEM TO BE SOLVED: To solve the problem of the difficulty of controlling a quantum cryptographic communication system, because of mixed optical pulse strings with different advancing directions in the communication path.
SOLUTION: The light source of the quantum cryptographic communication system is controlled and an optical pulse strings are generated intermittently from the light source. In a time slot term T1, optical pulse strings A, B, C and D are generated from the light source, and the returned optical pulse strings A, B, C and D are received in a time slot term T2. By allotting the time slot in this way, only the pulse strings are made to exist having the same advancing direction in one communication path, in one period. By generating the pulse strings intermittently, the pulse strings advance in one direction in the same time, the pulse string can be controlled easily.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了解决由于在通信路径中具有不同前进方向的混合光脉冲串而难以控制量子密码通信系统的问题。解决方案：量子密码通信系统的光源受到控制，并从光源间歇地产生光脉冲串。在时隙项T1中，从光源生成光脉冲串A，B，C和D，并且在时隙项T2中接收返回的光脉冲串A，B，C和D。通过以这种方式分配时隙，在一个周期中，仅使一个通信路径中具有相同行进方向的脉冲串存在。通过间歇地产生脉冲串，脉冲串在同一时间沿一个方向前进，可以容易地控制脉冲串。

90. 发明专利

JP2002353888A OPTICAL TRANSMISSION SYSTEM 失效
公开(公告)号：JP2002353888A
公开(公告)日：2002-12-06
申请号：JP2001152883
申请日：2001-05-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAJIYA SATORU , SHIMIZU KATSUHIRO , KOBAYASHI YUKIO
IPC分类号： H04B10/2507 , H04B10/2525 , H04B10/2543 , H04J14/00 , H04J14/02 , H04B10/02 , H04B10/18
摘要： PROBLEM TO BE SOLVED: To realize the optical wavelength multiplex transmission of a high bit rate by dissolving the influence of waveform deterioration due to the dispersion slope of an optical fiber transmission line. SOLUTION: In an optical transmission system where an optical transmission part 1 and an optical reception part 2 are connected through an optical transmission line 3, the optical transmission line 3 is provided with a first optical fiber transmission line 32, a second optical fiber transmission line 33 which has a wavelength dispersion of a code inverse to that of the first optical fiber transmission line 32 in prescribed wavelength and has a dispersion slope of a code inverse to that of the line 32 in the prescribed wavelength and a dispersion slope compensation part 34 which has a wavelength dispersion of a code similar to that of the second optical fiber transmission line 33 and a dispersion slope different from that of the line 33.

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