公开(公告)号：US20120082465A1

公开(公告)日：2012-04-05

申请号：US12879820

申请日：2010-09-10

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

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

IPC分类号： H04B10/06 ,  H04B10/00

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50595 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/5561 ,  H04B10/66 ,  H04B10/677

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（＆pgr / / 2）。 低频信号f0叠加在一个光信号上。 将相位从低频信号f0移位了＆pgr / / 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2f0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f0分量成为最小值。

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：US07689074B2

公开(公告)日：2010-03-30

申请号：US12232607

申请日：2008-09-19

申请人： Akihiko Isomura ,  Jens Rasmussen

发明人： Akihiko Isomura ,  Jens Rasmussen

IPC分类号： G02B6/28

CPC分类号： H04J14/06 ,  G02F2001/212 ,  G02F2203/21 ,  H04B10/677

摘要： In the optical reception apparatus, a DQPSK polarization multiplexed signal light (S) input thereto is split into horizontally/vertically polarized signal lights (SH, SV) by a polarization beam splitter (3), and the signal lights (SH, SV) each is branched into two by each of optical couplers (4H, 4V). Then, one branched lights (SH1, SV1) by each of the optical couplers (4H, 4V) are supplied to a delay interferometer (5I) on the I branch via optical circulators (10I1, 10I2) to be propagated in bidirectional, and the other branched lights (SHQ, SVQ) by each of the optical couplers (4H, 4V) are supplied to a delay interferometer (5Q) on the Q branch side via optical circulators (10Q1, 10Q2) to be propagated in bidirectional, so that a set of delay interferometers (5I, 5Q) is commonly used for horizontally polarized waves and vertically polarized waves.

摘要翻译： 在光接收装置中，通过偏振分束器（3）将输入的DQPSK偏振复用信号光（S）分离为水平/垂直偏振信号光（SH，SV），各信号光（SH，SV）分别 由光耦合器（4H，4V）分支成两个。 然后，每个光耦合器（4H，4V）的一个分支光（SH1，SV1）经由光循环器（10I1,10I2）被提供给I分支上的延迟干涉仪（5I）以被双向传播，并且 通过光耦合器（4H，4V）中的每一个的其他分支光（SHQ，SVQ）经由光循环器（10Q1,10Q2）被提供给Q分支侧的延迟干涉仪（5Q），以被双向传播， 一组延迟干涉仪（5I，5Q）通常用于水平极化波和垂直极化波。

公开(公告)号：US07684713B2

公开(公告)日：2010-03-23

申请号：US11593591

申请日：2006-11-07

申请人： Yoshikazu Terayama ,  Noriaki Mizuguchi ,  Eiji Ishikawa ,  Takashi Toyomaki ,  Kenichi Kaburagi ,  Takeshi Hoshida ,  Jens Rasmussen ,  Akihiko Isomura

发明人： Yoshikazu Terayama ,  Noriaki Mizuguchi ,  Eiji Ishikawa ,  Takashi Toyomaki ,  Kenichi Kaburagi ,  Takeshi Hoshida ,  Jens Rasmussen ,  Akihiko Isomura

IPC分类号： H04B10/00

CPC分类号： H04B10/66

摘要： A calculation processing unit controls temperature of a Peltier device based on a slope of a waveform obtained by subtracting a waveform of a B-arm monitoring signal from a waveform of an A-arm monitoring signal and a value obtained by subtracting a value B of the B-arm monitoring signal from a value A of the A-arm monitoring signal. Similarly, the calculation processing unit controls a phase of the A-arm and a phase of the B-arm. An A-arm side micro-controller controls temperature of an A-arm side heater 22 based on the value of the A-arm monitoring signal, and controls the phase of the A-arm. A B-arm side micro-controller controls temperature of a B-arm side heater based on the value B of the B-arm monitoring signal, and controls the phase of the B-arm.

摘要翻译： 计算处理单元基于通过从A臂监视信号的波形中减去B臂监视信号的波形而获得的波形的斜率，以及通过从A臂监视信号的波形中减去B的值得到的值来控制珀耳帖装置的温度 B臂监控信号从A臂A值监控信号。 类似地，计算处理单元控制A臂的相位和B臂的相位。 A臂侧微型控制器基于A臂监视信号的值来控制A臂侧加热器22的温度，并且控制A臂的相位。 B臂侧微控制器基于B臂监控信号的值B控制B臂侧加热器的温度，并控制B臂的相位。

公开(公告)号：US20080107425A1

公开(公告)日：2008-05-08

申请号：US11892303

申请日：2007-08-21

申请人： Jens Rasmussen ,  Akihiko Isomura

发明人： Jens Rasmussen ,  Akihiko Isomura

IPC分类号： H04B10/02

CPC分类号： H04B10/532 ,  H04B10/2569

摘要： Influence of polarization mode dispersion, occurring in an optical fiber is mitigated by means of polarization scrambling, differential group delay which a received optical signal has is optically suppressed; the optical signal in which differential group delay is thus suppressed is converted into an electric signal; and error correcting processing is carried out on the electric signal obtained, a jitter amplitude in the received optical signal is suppressed, influence of which to a jitter tolerance increases due to increase in speed of the polarization scrambling.

摘要翻译： 光纤中出现的偏振模色散的影响通过偏振加扰，受光信号具有光学抑制的差分组延迟得到缓解; 因此抑制差分组延迟的光信号被转换成电信号; 并且对所获得的电信号进行纠错处理，抑制接收的光信号中的抖动幅度，由于偏振加扰的速度的增加，其对抖动容限的影响增加。

公开(公告)号：US20070230617A1

公开(公告)日：2007-10-04

申请号：US11723938

申请日：2007-03-22

申请人： Zhenning Tao ,  Jens Rasmussen

发明人： Zhenning Tao ,  Jens Rasmussen

IPC分类号： H04L27/12

CPC分类号： H04L27/364 ,  G02F1/0123 ,  G02F1/2255 ,  H04B10/5561

摘要： An apparatus and a method for a I-Q quadrature modulation transmitter monitor a phase bias between an I branch and a Q branch of the I-Q quadrature modulation transmitter. The I-Q quadrature modulation transmitter includes the I-branch, the Q-branch equipped with a phase bias, and a tap. The apparatus is installed between the tap and the phase bias, and monitors the phase between the I branch and the Q branch which phase is introduced by the phase bias. The apparatus includes the following components: a module squarer, receiving signal from the tap and outputting a module square of the received signal; a multiplier, to multiplying data of the I-branch, data of the Q-branch and the module square to output a multiplied signal; and an averager, averaging the multiplied signal output by the multiplier. The phase between the I branch and the Q branch may be corrected according to monitoring results.

摘要翻译： 用于I-Q正交调制发射机的装置和方法监视I-Q正交调制发射机的I分支和Q分支之间的相位偏置。 I-Q正交调制发射机包括I分支，配备有相位偏置的Q分支和抽头。 该装置安装在抽头和相位偏置之间，并监视I相和Q分支之间的相位，该相位由相位偏置引入。 该装置包括以下组件：模块平方器，从抽头接收信号并输出​​接收信号的平方; 乘法器，用于将I分支的数据，Q分支的数据和模块平方相乘以输出相乘的信号; 和平均器，对乘法器输出的相乘信号进行平均。 I分支和Q分支之间的相位可以根据监测结果进行校正。

公开(公告)号：US20070014513A1

公开(公告)日：2007-01-18

申请号：US11340530

申请日：2006-01-27

申请人： Akihiko Isomura ,  Jens Rasmussen

发明人： Akihiko Isomura ,  Jens Rasmussen

IPC分类号： G02B6/28

CPC分类号： H04J14/0221 ,  H04B10/25073 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213

摘要： A wavelength-division multiplexing transmitter that is capable of enhancing its ability to compensate for a difference in light intensity between wavelengths. The wavelength-division multiplexing transmitter includes an optical branching part for branching a wavelength-division multiplexed input optical signal into a plurality of optical signals, a plurality of wavelength-selective devices for selecting as output wavelengths the wavelengths of each of the optical signals branched by the optical branching part, and an optical coupling part for coupling the output wavelengths respectively output from the plurality of wavelength-selective devices. At least either the branching in the optical branching part or the coupling in the optical coupling part is performed at a power ratio M:N where M and N differ from each other.

摘要翻译： 一种波分复用发射机，其能够增强其补偿波长之间光强差异的能力。 波分复用发射机包括：用于将波分复用输入光信号分支为多个光信号的光分支部分;多个波长选择装置，用于选择作为输出波长的光信号分支的波长 光分支部分和用于耦合从多个波长选择装置分别输出的输出波长的光耦合部分。 光分路部分的分支或光耦合部分的耦合中的至少一个以M和N的功率比M：N进行，其中M和N彼此不同。

公开(公告)号：US20060263098A1

公开(公告)日：2006-11-23

申请号：US11275420

申请日：2005-12-30

申请人： Yuichi AKIYAMA ,  Takeshi Hoshida ,  Akira Miura ,  Yutaka Kai ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

发明人： Yuichi AKIYAMA ,  Takeshi Hoshida ,  Akira Miura ,  Yutaka Kai ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

IPC分类号： H04B10/04

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50595 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/5561 ,  H04B10/66 ,  H04B10/677

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：US20060093258A1

公开(公告)日：2006-05-04

申请号：US11262936

申请日：2005-11-01

申请人： Takafumi Terahara ,  Jens Rasmussen ,  Hiroki Ooi ,  Akira Miura

发明人： Takafumi Terahara ,  Jens Rasmussen ,  Hiroki Ooi ,  Akira Miura

IPC分类号： G02B6/26

CPC分类号： H04Q11/0005 ,  H04J14/0212 ,  H04Q2011/0026 ,  H04Q2011/003 ,  H04Q2011/0049

摘要： The optical switch includes: an input port from which beam is input; a dispersing unit that disperses the beam input; a condensing unit that condenses the beam dispersed; a mirror that reflects the beam condensed; and a plurality of output ports from which the beam reflected is output. The mirror rotates around a first axis so that the beam reflected enters one of the output ports, and also rotates around an axis that is selected, according to that which output port the beam reflected enters, from any one of the first axis and a second axis perpendicular to the first axis so that an intensity of the beam output is attenuated.

摘要翻译： 光开关包括：输入光束的输入端口; 分散单元，其分散光束输入; 冷凝单元，其使分散的光束冷凝; 反射光束的镜子; 以及输出反射光束的多个输出端口。 反射镜围绕第一轴旋转，使得反射的光束进入输出端口中的一个，并且还根据所反射的光束所反射的输出端口从第一轴线和第二轴线中的任一个轴线旋转的轴线 垂直于第一轴的轴线，使得光束输出的强度被衰减。