公开(公告)号：US20100040383A1

公开(公告)日：2010-02-18

申请号：US12565812

申请日：2009-09-24

申请人： Kazuo Hironishi ,  Takeshi Hoshida

发明人： Kazuo Hironishi ,  Takeshi Hoshida

IPC分类号： H04B10/06

CPC分类号： H04L27/223 ,  H04B10/66 ,  H04B10/677

摘要： A first optical splitter splits an input optical signal and outputs it to first and second optical paths. A second optical splitter outputs the optical signal from the first optical path to third and fourth optical paths. A third optical splitter outputs the optical signal from the second optical path to fifth and sixth optical paths. In the second optical path, 1-symbol delay element and π/4 phase shifter element are configured. In the fourth optical path, π/2 phase shifter element is configured. First and second adjuster circuits adjust the optical path length of the second and the fourth optical paths, respectively, by temperature control. A first optical coupler couples optical signals transmitted via the third and the fifth optical paths. A second optical coupler couples optical signals transmitted via the fourth and the sixth optical paths. Photodetectors convert the optical signals from the optical couplers into electrical signals.

摘要翻译： 第一光分路器分离输入光信号并将其输出到第一和第二光路。 第二光分路器将光信号从第一光路输出到第三和第四光路。 第三光分路器将光信号从第二光路输出到第五和第六光路。 在第二光路中配置1符号延迟元件和＆pgr / 4移相器元件。 在第四光路中配置＆pgr / 2移相器元件。 第一和第二调节器电路通过温度控制分别调节第二和第四光路的光路长度。 第一光耦合器耦合经由第三和第五光路传输的光信号。 第二光耦合器耦合经由第四和第六光路传输的光信号。 光电检测器将光耦合器的光信号转换为电信号。

公开(公告)号：US07555061B2

公开(公告)日：2009-06-30

申请号：US11155666

申请日：2005-06-20

申请人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

发明人： Toru Katagiri ,  Takeshi Hoshida ,  Tomoo Takahara ,  Kentaro Nakamura ,  Naoki Kuwata

IPC分类号： H04L27/20

CPC分类号： H04B10/5051 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/5561 ,  H04L25/03343 ,  H04L27/2075 ,  H04L27/2096

摘要： An optical sender is disclosed that operates in a Differential Quadrature Phase Shift Keying modulation scheme for high speed optical transmission and is capable of performing logical calculations at a low speed. The optical sender transmits a Differential Quadrature Phase Shift Keying (DQPSK) signal generated with modulation signals ρk and ηk so that a signal directly output from a signal receiver corresponding to the optical sender is in agreement with data signals Ik and Qk to be transmitted. The signal receiver is capable of modulation by DQPSK, and the modulation signals ρk and ηk are precoded by using the data signals Ik and Qk and the modulation signals one symbol earlier (ρk−1 and ηk−1) . The optical sender includes plural precoders that perform logical calculation simultaneously and in parallel on plural data signals one period after another period.

摘要翻译： 公开了一种用于高速光传输的差分正交相移键控调制方案的光发送器，并能够以低速进行逻辑运算。 光发送器发送利用调制信号rhok和etak生成的差分正交相移键控（DQPSK）信号，使得从与光发送器对应的信号接收器直接输出的信号与要发送的数据信号Ik和Qk一致。 信号接收机能够通过DQPSK调制，并且通过使用数据信号Ik和Qk以及前一个符号（rhok-1和etak-1）的调制信号对调制信号rhok和etak进行预编码。 光发送器包括多个预编码器，这些预编码器在一个周期之后的一个周期上同时并行并行地执行多个数据信号。

公开(公告)号：US07200344B1

公开(公告)日：2007-04-03

申请号：US09853318

申请日：2001-05-10

申请人： Takeshi Hoshida

发明人： Takeshi Hoshida

IPC分类号： H04B10/06

CPC分类号： H04B10/69 ,  H04B10/0779 ,  H04B10/67 ,  H04J14/02

摘要： A method and system for transmitting information in a wavelength division multiplex (WDM) or other suitable multichannel optical communication system includes receiving a multichannel signal having a symbol rate and comprising a plurality of non-intensity modulated optical information signals. The non-intensity modulated optical information signals have a minimum channel spacing comprising a multiple of the symbol rate within 0.4 to 0.6 of an integer. The non-intensity modulated optical information signals are separated from the multichannel signal and each converted into an intensity modulated optical information signal using an asymmetric interferometer. A data signal is recovered from the intensity modulated optical information signal.

摘要翻译： 用于在波分多路复用（WDM）或其他合适的多信道光通信系统中发送信息的方法和系统包括接收具有符号率并包括多个非强度调制光信息信号的多信道信号。 非强度调制光信息信号具有最小信道间隔，其包括整数的0.4至0.6之内的符号率的倍数。 非强度调制光信息信号与多信道信号分离，并使用非对称干涉仪将其转换成强度调制光信息信号。 从强度调制光信息信号中恢复数据信号。

公开(公告)号：US20060251364A1

公开(公告)日：2006-11-09

申请号：US11480857

申请日：2006-07-06

申请人： Takafumi Terahara ,  Rainer Hainberger ,  Takeshi Hoshida

发明人： Takafumi Terahara ,  Rainer Hainberger ,  Takeshi Hoshida

IPC分类号： G02B6/44

CPC分类号： H04B10/2916 ,  G02B6/02252 ,  G02B6/02266 ,  G02B6/262 ,  G02B6/29377 ,  H01S3/302 ,  H04B10/25253 ,  H04B2210/003

摘要： An optical fiber cable including first, second and third optical fibers connected together so that light traveling through the cable travels through the first optical fiber, then through the second optical fiber and then through the third optical fiber. The second optical fiber has a negative dispersion value. The first and third optical fibers each have a positive dispersion value. The cable optically connects together two optical repeater stations, or an optical repeater station and an end station. Lengths of the first, second and third optical fibers are set so that loss in the first, second and third optical fibers of light transmitted through the first, second and third optical fibers is compensated by Raman amplification occurring in the first, second and third optical fibers.

摘要翻译： 一种光纤电缆，包括连接在一起的第一，第二和第三光纤，使得穿过电缆的光线穿过第一光纤，然后穿过第二光纤，然后穿过第三光纤。 第二光纤具有负色散值。 第一和第三光纤各自具有正色散值。 电缆将两个光中继站或光中继站和终端站光学连接在一起。 设置第一，第二和第三光纤的长度，使得透过第一，第二和第三光纤的光的第一，第二和第三光纤中的损耗由在第一，第二和第三光纤中的第一，第二和第三光纤 纤维。

公开(公告)号：US20060222377A1

公开(公告)日：2006-10-05

申请号：US11391414

申请日：2006-03-29

申请人： Takeshi Hoshida ,  Nobuhiro Fukushima

发明人： Takeshi Hoshida ,  Nobuhiro Fukushima

IPC分类号： H04B10/06

CPC分类号： H04L27/22 ,  H04B10/60

摘要： A small size and low cost optical receiving apparatus, which can stably demodulate the signal, lights in accordance with the differential M-phase shift keying (DMPSK) system. An optical receiving apparatus comprises a light branching unit for branching the differential M-phase shift keying signal beam into four signal light beams, a delay adjusting unit giving a delay time difference of one symbol between a first signal light beam and a second signal light beam and between a third signal light beam and a fourth signal light beam, a demodulating unit for outputting a least two demodulated light signals through respective interferences between the first signal light beam and the second signal light beam, and between the third signal light beam and the fourth signal light beam on one plane which is not parallel to any signal light beam, and at least two optical detectors for converting at least two light signals into electrical signals.

摘要翻译： 可以稳定地解调信号的小尺寸和低成本的光接收装置根据差分M相移键控（DMPSK）系统点亮。 光接收装置包括用于将差分M相移键控信号光束分支为四个信号光束的光分支单元，延迟调整单元，其给出第一信号光束和第二信号光束之间的一个符号的延迟时间差 并且在第三信号光束和第四信号光束之间，解调单元，用于通过第一信号光束和第二信号光束之间的相应干扰以及第三信号光束和第二信号光束之间的相应干扰输出至少两个解调光信号; 在不平行于任何信号光束的一个平面上的第四信号光束，以及用于将至少两个光信号转换为电信号的至少两个光学检测器。

公开(公告)号：US20060171718A1

公开(公告)日：2006-08-03

申请号：US11117429

申请日：2005-04-29

申请人： Takeshi Hoshida

发明人： Takeshi Hoshida

IPC分类号： H04B10/00

CPC分类号： H04B10/61 ,  H04B10/532

摘要： In an optical receiver according to the present invention, an input signal light subjected to the differential quadrature phase shift keying (DQPSK) is incident on a PANDA type fiber in a linearly polarized state by 45°, so that a delay time difference corresponding to one symbol is generated between orthogonal polarization components in the DQPSK signal light, and then, the signal light is branched by a half mirror into two, to be sent to first and second paths respectively, thereby giving, by a ¼ wave plate disposed on one of the paths, a relative birefringent amount difference of π/2 between the lights propagated through the respective paths. Then, each of the lights propagated through the first and second paths is separated into two orthogonal polarization components by a polarization beam splitter, and the respective polarization components are received by a differential reception circuit so that in-phase components and quadrature components in the DQPSK signal are demodulated. Thus, a small sized and low cost optical receiver capable of stably demodulating the DQPSK signal is provided.

公开(公告)号：US07035543B1

公开(公告)日：2006-04-25

申请号：US09853316

申请日：2001-05-10

申请人： Takeshi Hoshida ,  Hiroshi Onaka

发明人： Takeshi Hoshida ,  Hiroshi Onaka

IPC分类号： H04J14/02

CPC分类号： H04B10/69 ,  H04B10/677 ,  H04J14/02

摘要： A method and system for demultiplexing non-intensity modulated wavelength division multiplexed (WDM) signals includes receiving a WDM signal having a plurality of non-intensity modulated optical information signals. A plurality of the non-intensity modulated optical information signals are converted to intensity modulated signals while the plurality of non-intensity modulated optical information signals are multiplexed in at least a portion of the WDM signal.

摘要翻译： 用于解复用非强度调制波分复用（WDM）信号的方法和系统包括接收具有多个非强度调制光信息信号的WDM信号。 多个非强度调制光信息信号被转换为强度调制信号，而多个非强度调制光信息信号在WDM信号的至少一部分被复用。

公开(公告)号：US20050117908A1

公开(公告)日：2005-06-02

申请号：US10726157

申请日：2003-12-02

申请人： Gerardo Castanon ,  Remi Pecqueur ,  Takeshi Hoshida

发明人： Gerardo Castanon ,  Remi Pecqueur ,  Takeshi Hoshida

IPC分类号： H04B10/02 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  G02B6/26 ,  G02B6/42

CPC分类号： H04Q11/0005 ,  H04Q2011/0015

摘要： An optical cross-connect includes multiple input ports that each receive an optical input signal and multiple output ports that each output an optical output signal. The optical cross-connect also includes a distributing amplifier associated with each input port that generates multiple copies of the input signal received at the associated input port. Furthermore, the optical cross-connect includes multiple filter units that receive a copy of one or more of the input signals from one or more of the distributing amplifiers and forward traffic in selected channels of one or more of the received copies. In addition, the optical cross-connect includes a combining amplifier associated with each output port. Each combining amplifier receives the traffic in one or more of the channels forwarded by one or more of the filter units and combines the received traffic into an output signal to be output from the associated output port. The optical cross-connect further includes one or more regeneration modules that each regenerate the traffic in one or more channels of one or more of the input signals.

摘要翻译： 光交叉连接包括多个输入端口，每个输入端口接收光输入信号和多个输出端口，每个输出端口输出光输出信号。 光交叉连接还包括与每个输入端口相关联的分配放大器，其产生在相关联的输入端口处接收的输入信号的多个副本。 此外，光交叉连接包括多个滤波器单元，其接收来自一个或多个分配放大器的一个或多个输入信号的副本以及一个或多个所接收副本的所选频道中的前向业务。 此外，光交叉连接包括与每个输出端口相关联的组合放大器。 每个组合放大器接收由一个或多个滤波器单元转发的一个或多个信道中的业务，并将接收到的业务组合成输出信号以从相关联的输出端口输出。 光学交叉连接还包括一个或多个再生模块，每个再生模块在一个或多个输入信号的一个或多个通道中重新生成流量。

公开(公告)号：US08935115B2

公开(公告)日：2015-01-13

申请号：US13412176

申请日：2012-03-05

申请人： Weizhen Yan ,  Zhenning Tao ,  Takeshi Hoshida

发明人： Weizhen Yan ,  Zhenning Tao ,  Takeshi Hoshida

IPC分类号： G06F19/00 ,  H04B10/255 ,  H04B10/69

CPC分类号： H04B10/255 ,  H04B10/6971

摘要： A method and apparatus for compensating nonlinear damage are disclosed. The method for compensating nonlinear damage, including: determining an additive parameter indicating an amount of nonlinear damage based on a plurality of sampled signal sets among which a sampling time of an input signal varies according to different time; and subtracting the additive parameter from the input signal.

摘要翻译： 公开了一种用于补偿非线性损伤的方法和装置。 一种用于补偿非线性损伤的方法，包括：基于多个采样信号集确定表示非线性损伤量的附加参数，其中输入信号的采样时间根据不同的时间而变化; 并从输入信号中减去加法参数。

公开(公告)号：US08649678B2

公开(公告)日：2014-02-11

申请号：US12488745

申请日：2009-06-22

申请人： Takeshi Hoshida ,  Katsumi Fukumitsu

发明人： Takeshi Hoshida ,  Katsumi Fukumitsu

IPC分类号： H04B10/08

CPC分类号： H04J14/0227 ,  H04J14/0246 ,  H04J14/0279 ,  H04J14/0283 ,  H04L1/0036 ,  H04L1/0053 ,  H04L1/203 ,  H04L43/0847

摘要： The technique for improving the efficiency in use of power resources while maintaining the received signal quality that satisfies the requirement during a system operation is disclosed. The frame processing apparatus disclosed in the present case includes: a frame processing unit which performs frame processing on an input signal in the designated error processing mode; and a controlling unit which receives the monitoring result relating to the signal quality of the input signal and performs switching control of the designation of the above error processing mode in the frame processing unit based on the received monitoring result.

摘要翻译： 公开了一种提高电力资源使用效率的技术，同时保持在系统操作期间满足要求的接收信号质量。 在本例中公开的帧处理装置包括：帧处理部，其以指定的误差处理模式对输入信号进行帧处理; 以及控制单元，其接收与输入信号的信号质量相关的监视结果，并且基于接收的监视结果执行帧处理单元中的上述错误处理模式的指定的切换控制。