公开(公告)号：US06782201B2

公开(公告)日：2004-08-24

申请号：US09731587

申请日：2000-12-07

申请人： Shu Yamamoto ,  Tetsuya Miyazaki ,  Yasuyuki Nagao ,  Tomohiro Otani

发明人： Shu Yamamoto ,  Tetsuya Miyazaki ,  Yasuyuki Nagao ,  Tomohiro Otani

IPC分类号： H04B1008

CPC分类号： H04J14/0291 ,  H04J14/0283 ,  H04Q2011/0058 ,  H04Q2011/0081

摘要： A four fiber ring network optical switching circuit capable of realizing the bridge function at times of the span switching and the ring switching economically by a very compact structure is disclosed. A four fiber ring network optical switching circuit is formed by a 10×8 optical matrix switch having ten input ports and eight output ports, and two branching elements adapted to branch each one of two optical signals among eight optical signals that are inputs of the four fiber ring network optical switching circuit, into two identical optical signals, and to enter the two identical optical signals into two input ports of the 10×8 optical matrix switch such that the eight optical signals are entered into the ten input ports of the 10×8 optical matrix switch as ten optical signals.

摘要翻译： 公开了一种能够通过非常紧凑的结构经济地实现跨度切换时的桥接功能和环形开关的四光纤环网光交换电路。 四光纤环网光交换电路由具有十个输入端口和八个输出端口的10×8光矩阵开关形成，并且两个分支元件适合于在作为四个光纤环的输入的八个光信号之中分支两个光信号中的每一个 网络光交换电路分成两个相同的光信号，并将两个相同的光信号输入到10x8光矩阵开关的两个输入端口，使得八个光信号进入10x8光矩阵开关的十个输入端口，为十 光信号。

公开(公告)号：US06741810B2

公开(公告)日：2004-05-25

申请号：US09784558

申请日：2001-02-15

申请人： Tomohiro Otani ,  Tetsuya Miyazaki ,  Shu Yamamoto

发明人： Tomohiro Otani ,  Tetsuya Miyazaki ,  Shu Yamamoto

IPC分类号： H04J1408

CPC分类号： H04J14/0223 ,  H04J14/08

摘要： In a signal demultiplexing device formed by a probe light source, a wavelength converter, and a wavelength demultiplexer, the probe light source is formed by a plurality of sub-probe light sources configured to respectively generate the sub-probe lights with the prescribed different wavelengths for respective time-slots, a multiplexer configured to multiplex the sub-probe lights generated by the plurality of sub-probe light sources, and a phase different giving unit configured to give phase differences corresponding to time-slot positions to the sub-probe lights multiplexed by the multiplexer, and to sequentially output the sub-probe lights with the phase differences in correspondence to respective time-slots.

摘要翻译： 在由探测光源，波长转换器和波长解复用器形成的信号解复用装置中，探测光源由多个子探测光源形成，该多个子探测光源被配置为分别产生具有规定的不同波长的子探测光 对于各个时隙，多路复用器被配置为对由多个子探测光源产生的子探测光进行多路复用，以及相位不同给出单元，被配置为给子探针灯提供对应于时隙位置的相位差 通过多路复用器多路复用，并且依次输出具有与各个时隙对应的相位差的子探测灯。

公开(公告)号：US06532091B1

公开(公告)日：2003-03-11

申请号：US09246256

申请日：1999-02-08

申请人： Tetsuya Miyazaki ,  Tomohiro Otani ,  Masatoshi Suzuki ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Tetsuya Miyazaki ,  Tomohiro Otani ,  Masatoshi Suzuki ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04B1002

CPC分类号： H04B10/299

摘要： An optical digital regenerator for digitally regenerating an input signal in an intact optical state. A first operating unit has a first probe light generator for generating a first probe light and a first optical operator for converting a waveform of the first probe light output from a first probe light generator according to an optical intensity waveform of the input signal light. A clock extractor extracts a clock component of the input signal light from a photocurrent generated by the first optical operator. A second optical operating unit has a second probe light generator for generating a second probe light pulsed in accordance with the clock output from the clock extractor and a second optical operator for sampling the second probe pulse light output from the second probe light generator.

摘要翻译： 一种用于以完整光学状态数字再生输入信号的光学数字再生器。 第一操作单元具有用于产生第一探测光的第一探测光发生器和用于根据输入信号光的光强度波形转换从第一探测光发生器输出的第一探测光的波形的第一光学操作器。 时钟提取器从由第一光学运算器产生的光电流提取输入信号光的时钟分量。 第二光学操作单元具有第二探测光发生器，用于产生根据来自时钟提取器的时钟输出脉冲的第二探测光，以及第二光学操作器，用于对从第二探测光发生器输出的第二探测脉冲光进行采样。

公开(公告)号：US06317534B1

公开(公告)日：2001-11-13

申请号：US09215225

申请日：1998-12-18

申请人： Tetsuya Miyazaki ,  Shu Yamamoto ,  Koichi Maru ,  Hisato Uetsuka

发明人： Tetsuya Miyazaki ,  Shu Yamamoto ,  Koichi Maru ,  Hisato Uetsuka

IPC分类号： G02B628

CPC分类号： G02B6/12011

摘要： An optical wavelength routing device comprises an arrayed waveguide comprising a plurality of channel waveguides formed on a substrate, a plurality of input waveguides having 12 input ports located on an input side of the arrayed waveguide, a plurality of output waveguides having 16 input ports located on an output side of the arrayed waveguide, an input slab waveguide for coupling the plurality of input waveguides to the arrayed waveguide to provide a first coupling portion on the side of the input waveguide, and an output slab waveguide for coupling the arrayed waveguide to the plurality of output waveguides to provide a second coupling portion on the side of the output waveguide, in which central wavelengths of lights input to the input ports and output from the output ports are controlled such that a difference between a predetermined wavelength and a central wavelength is suppressed within the range of +&dgr;&lgr;/4. By this structure, a maximum central wavelength difference can be suppressed at minimum.

摘要翻译： 光波长路由设备包括阵列波导，其包括形成在衬底上的多个通道波导，多个输入波导，其具有位于阵列波导的输入侧上的12个输入端口，多个输出波导具有位于 阵列波导的输出侧，用于将多个输入波导耦合到阵列波导的输入平板波导，以在输入波导侧提供第一耦合部分，以及用于将阵列波导耦合到多个波导的输出平板波导 的输出波导，以在输出波导侧提供第二耦合部分，其中输入到输入端口的光的中心波长和从输出端口输出被控制，使得预定波长和中心波长之间的差被抑制 在+ deltalambd / 4的范围内。 通过这种结构，最大限度地抑制最大中心波长差。

公开(公告)号：US06801720B1

公开(公告)日：2004-10-05

申请号：US09559644

申请日：2000-04-28

申请人： Takashi Mizuochi ,  Yojiro Osaki ,  Aritomo Uemura ,  Hiroshi Ichibangase ,  Kiwami Matsushita ,  Tadayoshi Kitayama ,  Shu Yamamoto ,  Tetsuya Miyazaki ,  Takatomi Kabashima ,  Naoki Kobayashi

发明人： Takashi Mizuochi ,  Yojiro Osaki ,  Aritomo Uemura ,  Hiroshi Ichibangase ,  Kiwami Matsushita ,  Tadayoshi Kitayama ,  Shu Yamamoto ,  Tetsuya Miyazaki ,  Takatomi Kabashima ,  Naoki Kobayashi

IPC分类号： H04B1016

CPC分类号： H04L1/20 ,  H04B10/0775 ,  H04B2210/071 ,  H04B2210/072 ,  H04B2210/078 ,  H04J3/14 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0245 ,  H04J14/0249 ,  H04J14/0283 ,  H04J2203/0057

摘要： The present invention has an object to obtain an optical signal quality supervisory device that supervises the quality of an optical signal simply, efficiently and with high accuracy without inviting an increase in cost, an increase in circuit scale and increase in power consumption. The bit rate of the optical supervisory channel is made lower than the bit rate of the optical main channel that is transmitted over an optical communication system, but the reception electric band width of a receiver that receives the optical supervisory channel is made equal to or wider than the reception electric band width of a receiver that receives the optical main channel. Also, the optical supervisory channel is made up of an SOH (section over head) frame to detect an error of the BIP (bit interleaved parity) byte of SOH, thereby supervising the quality of the optical communication system, in particular, the light wave network.

摘要翻译： 本发明的目的是获得一种光信号质量监控装置，其能够简单，有效且高精度地监视光信号的质量，而不会增加成本，增加电路规模和增加功耗。 使光监视信道的比特率低于通过光通信系统发送的光主干的比特率，但接收光监控信道的接收机的接收电带宽度等于或大于 比接收光学主通道的接收机的接收电带宽度大。 此外，光监控信道由SOH（部分头）帧构成，以检测SOH的BIP（比特交织奇偶校验）字节的错误，从而监督光通信系统的质量，特别是光波 网络。

公开(公告)号：US06434288B1

公开(公告)日：2002-08-13

申请号：US09530448

申请日：2000-06-13

申请人： Aritomo Uemura ,  Hiroshi Ichibangase ,  Takashi Mizuochi ,  Tadayoshi Kitayama ,  Shu Yamamoto ,  Tetsuya Miyazaki ,  Takatomi Kabashima ,  Naoki Kobayashi

发明人： Aritomo Uemura ,  Hiroshi Ichibangase ,  Takashi Mizuochi ,  Tadayoshi Kitayama ,  Shu Yamamoto ,  Tetsuya Miyazaki ,  Takatomi Kabashima ,  Naoki Kobayashi

IPC分类号： G02B626

CPC分类号： H04J14/0297 ,  H04J14/0283 ,  H04J14/0291 ,  H04J14/0294 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0024 ,  H04Q2011/0043 ,  H04Q2011/0081 ,  H04Q2011/0092

摘要： An optical switching system is implemented by providing a transmitting section with a preparatory transmitted optical signal selector and a working transmitted optical signal splitter, which are each implemented by a 1×2 optical space switch, and by providing a receiving section with a receiving optical switch which is implemented by a 2×2 optical space switch, and with a preparatory receiving optical gate which is implemented by a 1×2 optical space switch. This makes it possible to switch between the working system and preparatory system without employing any 4×4 optical space switch, thereby implementing a practical optical switching system without causing such problems as communication interruption during maintenance or impairment of transmission path working efficiency.

摘要翻译： 光交换系统是通过提供一个具有准备发送光信号选择器和工作传输光信号分离器的发射部分，每个发射部分由1x2光学空间开关实现，并且通过向接收部分提供接收光开关，该接收光开关是 由2x2光学空间开关实现，并且具有由1x2光学空间开关实现的准备接收光栅。 这使得可以在不使用任何4×4光学空间开关的情况下在工作系统和预备系统之间切换，从而实现实用的光交换系统，而不会导致维护期间的通信中断或传输路径工作效率的损害等问题。

公开(公告)号：US06331907B1

公开(公告)日：2001-12-18

申请号：US09625386

申请日：2000-07-26

申请人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J1402

CPC分类号： H01S3/2383 ,  H01S3/067 ,  H01S3/06791 ,  H01S3/08086 ,  H04B2210/258 ,  H04J14/02

摘要： In a light source for generating light containing multiple wavelengths substantially uniform in intensity, a wavelength demultiplexing element 10 (for example, waveguide-type wavelength selecting filter) demultiplexes input light into a plurality of wavelengths &lgr;1 through &lgr;32. Optical amplifiers 14-1 through 14-32 amplify outputs of the element 10 and applies them to input ports of a wavelength multiplexing element 12. The wavelength multiplexing element 12 wavelength-multiplexes their input. Output of the wavelength multiplexing element 12 is applied to a fiber coupler 16 which, in turn, applies one of its outputs to the wavelength demultiplexing element 10. The optical amplifiers 14 have a gain larger by approximately 10 dB than the loss in the optical loop made of the element 10, optical amplifier 14, element 12 and fiber coupler 16. The other output of the fiber coupler 16 is wavelength-multiplex light containing wavelengths &lgr;1 through &lgr;32.

公开(公告)号：US06215566B1

公开(公告)日：2001-04-10

申请号：US09625387

申请日：2000-07-26

申请人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J1406

CPC分类号： H01S3/2383 ,  H01S3/067 ,  H01S3/06791 ,  H01S3/08086 ,  H04B2210/258 ,  H04J14/02

摘要： In a light source for generating light containing multiple wavelengths substantially uniform in intensity, a wavelength demultiplexing element 10 (for example, waveguide-type wavelength selecting filter) demultiplexes input light into a plurality of wavelengths &lgr;1 through &lgr;32. Optical amplifiers 14-1 through 14-32 amplify outputs of the element 10 and applies them to input ports of a wavelength multiplexing element 12. The wavelength multiplexing element 12 wavelength-multiplexes their input. Output of the wavelength multiplexing element 12 is applied to a fiber coupler 16 which, in turn, applies one of its outputs to the wavelength demultiplexing element 10. The optical amplifiers 14 have a gain larger by approximately 10 dB than the loss in the optical loop made of the element 10, optical amplifier 14, element 12 and fiber coupler 16. The other output of the fiber coupler 16 is wavelength-multiplex light containing wavelengths &lgr;1 through &lgr;32.

公开(公告)号：US06285477B1

公开(公告)日：2001-09-04

申请号：US09469936

申请日：1999-12-21

申请人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J1402

CPC分类号： H01S3/2383 ,  H01S3/06791 ,  H01S3/08086 ,  H04J14/02

摘要： In a light source for generating light containing multiple wavelengths substantially uniform in intensity, a wavelength demultiplexing element 10 (for example, waveguide-type wavelength selecting filter) demultiplexes input light into a plurality of wavelengths &lgr;1 through &lgr;32. Optical amplifiers 14-1 through 14-32 amplify outputs of the element 10 and applies them to input ports of a wavelength multiplexing element 12. The wavelength multiplexing element 12 wavelength-multiplexes their input. Output of the wavelength multiplexing element 12 is applied to a fiber coupler 16 which, in turn, applies one of its outputs to the wavelength demultiplexing element 10. The optical amplifiers 14 have a gain larger by approximately 10 dB than the loss in the optical loop made of the element 10, optical amplifier 14, element 12 and fiber coupler 16. The other output of the fiber coupler 16 is wavelength-multiplex light containing wavelengths &lgr;1 through &lgr;32.

摘要翻译： 在用于产生强度基本均匀的多个波长的光的光源中，波长解复用元件10（例如，波导型波长选择滤波器）将输入光分离成多个波长lambd1至lambd32。 光放大器14-1至14-32放大元件10的输出并将其施加到波长多路复用元件12的输入端口。波长复用元件12对其输入进行波长多路复用。 波长多路复用元件12的输出被施加到光纤耦合器16，光纤耦合器16又将其一个输出施加到波长解复用元件10.光放大器14具有比光环路中的损耗大约10dB的增益 由元件10，光放大器14，元件12和光纤耦合器16制成。光纤耦合器16的另一个输出是波长lambd1至lambd32的波长多路复用光。

公开(公告)号：US06219163B1

公开(公告)日：2001-04-17

申请号：US09625385

申请日：2000-07-26

申请人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

发明人： Tetsuya Miyazaki ,  Noboru Edagawa ,  Shu Yamamoto

IPC分类号： H04J1402

CPC分类号： H01S3/2383 ,  H01S3/067 ,  H01S3/06791 ,  H01S3/08086 ,  H04B2210/258 ,  H04J14/02

摘要： In a light source for generating light containing multiple wavelengths substantially uniform in intensity, a wavelength demultiplexing element 10 (for example, waveguide-type wavelength selecting filter) demultiplexes input light into a plurality of wavelengths &lgr;1 through &lgr;32. optical amplifiers 14-1 through 14-32 amplify outputs of the element 10 and applies them to input ports of a wavelength multiplexing element 12. The wavelength multiplexing element 12 wavelength-multiplexes their input. Output of the wavelength multiplexing element 12 is applied to a fiber coupler 16 which, in turn, applies one of its outputs to the wavelength demultiplexing element 10. The optical amplifiers 14 have a gain larger by approximately 10 dB than the loss in the optical loop made of the element 10, optical amplifier 14, element 12 and fiber coupler 16. The other output of the fiber coupler 16 is wavelength-multiplex light containing wavelengths &lgr;1 through &lgr;32.

摘要翻译： 在用于产生强度基本均匀的多个波长的光的光源中，波长解复用元件10（例如，波导型波长选择滤波器）将输入光分离成多个波长lambd1至lambd32。 光放大器14-1至14-32放大元件10的输出并将其施加到波长多路复用元件12的输入端口。波长复用元件12对其输入进行波长多路复用。 波长多路复用元件12的输出被施加到光纤耦合器16，光纤耦合器16又将其一个输出施加到波长解复用元件10.光放大器14具有比光环路中的损耗大约10dB的增益 由元件10，光放大器14，元件12和光纤耦合器16制成。光纤耦合器16的另一个输出是波长lambd1至lambd32的波长多路复用光。