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1. 发明授权

US5400163A Multiplex digital communication system for transmitting channel identification information 失效
标题翻译：用于传输信道识别信息的多路数字通信系统
公开(公告)号：US5400163A
公开(公告)日：1995-03-21
申请号：US788454
申请日：1991-11-06
申请人： Takashi Mizuochi , Susumu Sato , Hiroshi Ichibangase , Tadayoshi Kitayama
发明人： Takashi Mizuochi , Susumu Sato , Hiroshi Ichibangase , Tadayoshi Kitayama
IPC分类号： H04J3/12 , H04J14/02 , H04N7/08 , H04N21/2365 , H04N21/434 , H04Q11/04
CPC分类号： H04N21/2365 , H04J14/02 , H04J3/12 , H04N21/4347 , H04N7/08 , H04Q11/0478 , H04J2203/0089
摘要： Multiplex communication system for transmitting different signals through a plurality of channels comprises a transmitter and a receiver. The transmitter comprises a transmitting section for multiplexing and transmitting the different signals through the plurality of channels, and an adder for adding channel identification signals for identifying the respective channels to the signals to be transmitted through the respective channels. The receiver comprises a setting device for setting a desired channel, a detector for detecting the channel identification signals from the signals transmitted from the transmitter, and a channel selector for selecting the channel signal preset by the setting device in accordance with the outputs of the setting device and the detector.
摘要翻译：用于通过多个信道发送不同信号的多路复用通信系统包括发射机和接收机。发射机包括用于通过多个信道复用和发送不同信号的发送部分，以及用于将用于识别相应信道的信道识别信号添加到要通过各个信道发送的信号的加法器。接收机包括用于设置所需信道的设置装置，用于从发射机发送的信号中检测信道识别信号的检测器和用于根据设置的输出来选择由设置装置预设的信道信号的信道选择器设备和检测器。

2. 发明授权

US06801720B1 Optical signal quality supervisory device 失效
标题翻译：光信号质量监控装置
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。

3. 发明授权

US06434288B1 Optical switching system 失效
标题翻译：光交换系统
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。

4. 发明授权

US5268786A Optical fiber amplifier and its amplification method 失效
标题翻译：光纤放大器及其放大方法
公开(公告)号：US5268786A
公开(公告)日：1993-12-07
申请号：US847753
申请日：1992-03-05
申请人： Kiwami Matsushita , Takashi Mizuochi , Mayumi Miyazaki , Tadayoshi Kitayama
发明人： Kiwami Matsushita , Takashi Mizuochi , Mayumi Miyazaki , Tadayoshi Kitayama
IPC分类号： H01S3/067 , H01S3/13 , H01S3/131 , H04B10/291 , G02F1/39 , H01S3/06 , H04B10/00
CPC分类号： H04B10/2912 , H01S3/06754 , H01S3/1301 , H01S3/0912
摘要： A optical signal from the input terminal 6a is amplified and goes through the optical fiber doped with rare earth. The excitation lights from the excitation light sources 2 and 3 are synthesized at the optical coupler 4 and outputted to the optical fiber doped with rare earth 1 through the optical coupler 5. A part of the light is branched from the optical coupler 11 to optical receiver 14 through the band pass light filter 13. The optical receiver 14 converts the received optical signal to an electrical signal and outputs it to the error signal output circuit 114. The receiving current is amplified in the error signal output circuit 114 and branched to the excitation light source output control circuits 9 and 10. The excitation light source output control circuits 9 and 10 execute feedback control so as to obtain a constant excitation light level outputted to the optical fiber doped with rare earth from the excitation light sources 2 and 3, in response to the output signal of the optical receiving circuits 7 and 8, and the output signal of the error signal branching circuit 115.
摘要翻译：来自输入端子6a的光信号被放大并穿过掺杂有稀土的光纤。来自激发光源2和3的激发光在光耦合器4处合成，并通过光耦合器5输出到掺杂有稀土1的光纤。一部分光从光耦合器11分支到光接收器光接收器14将接收到的光信号转换为电信号并将其输出到误差信号输出电路114.接收电流在误差信号输出电路114中放大并分支到激励光源输出控制电路9和10.激发光源输出控制电路9和10执行反馈控制，以获得从激发光源2和3输出到掺杂有稀土的光纤的恒定的激发光电平，对光接收电路7和8的输出信号的响应以及误差信号分支电路115的输出信号。

5. 发明授权

US06445478B1 Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods 有权
公开(公告)号：US06445478B1
公开(公告)日：2002-09-03
申请号：US09764271
申请日：2001-01-19
申请人： Katsuhiro Shimizu , Takashi Mizuochi , Takeshi Komiya , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Itsuro Morita
发明人： Katsuhiro Shimizu , Takashi Mizuochi , Takeshi Komiya , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Itsuro Morita
IPC分类号： H04B1004
摘要： Detection of an optical pulse position uses an optical pulse string with a determined repetitive ratio and an electric clock signal with a same frequency as the repetitive ratio of the optical pulse string. A phase of the electric clock signal oscillator is shifted and supplied to an optical modulator. The optical modulator modulates the optical pulse string based on the electric clock signal and outputs a modulated optical signal. A photo detector converts the modulated optical signal output from the optical modulator to an electric signal. The phase shift amount of the electric clock signal is controlled to maximize an output from the photo detector. Additionally, a dither signal may be used in the control of the phase shift, more than the optical modulator may be employed, and/or more than color light source may be employed. The use of at least one of feed forward and feedback control provided by maximizing an output of the photo detector allows an optical pulse having a short width to be realized.

6. 发明授权

US06292603B1 Dispersion compensation device 失效
标题翻译：色散补偿装置
公开(公告)号：US06292603B1
公开(公告)日：2001-09-18
申请号：US09207419
申请日：1998-12-08
申请人： Takashi Mizuochi , Tadayoshi Kitayama , Hideaki Tanaka , Koji Goto
发明人： Takashi Mizuochi , Tadayoshi Kitayama , Hideaki Tanaka , Koji Goto
IPC分类号： G02B628
CPC分类号： G02B6/12007 , G02B6/2932 , G02B6/29353 , G02B6/29377 , G02B6/29394 , H04B10/2519 , H04B2210/252 , H04B2210/254
摘要： A dispersion compensation device comprises a chirped grating, and a first optical unit for guiding at least a lightwave signal with a wavelength of &lgr;i that needs a positive dispersion compensation and is applied thereto to one end portion of the chirped grating whose grating pitch is shorter, and for furnishing light reflected by the chirped grating to outside the device. The device further comprises a second optical unit for guiding at least a lightwave signal with a wavelength of &lgr;i that needs a negative dispersion compensation and is applied thereto to another end portion of the chirped grating whose grating pitch is longer, and for furnishing light reflected by the chirped grating to outside the device. Both the first and second optical units can be either optical circulators or optical couplers.
摘要翻译：色散补偿装置包括啁啾光栅和第一光学单元，用于至少引导具有需要正色散补偿的兰姆波长的至少一个光波信号，并将其施加到其光栅间距较短的啁啾光栅的一个端部，并将由啁啾光栅反射的光提供到设备外部。该装置还包括第二光学单元，用于至少引导具有需要负色散补偿的兰姆波长的至少一个光波信号，并将其施加到光栅间距较长的啁啾光栅的另一端部，并且用于提供由啁啾光栅到设备外部。第一和第二光学单元都可以是光学循环器或光耦合器。

7. 发明授权

US5850301A Wavelength multiplexed light transfer unit and wavelength multiplexed light transfer system 失效
公开(公告)号：US5850301A
公开(公告)日：1998-12-15
申请号：US070556
申请日：1998-04-30
申请人： Takashi Mizuochi , Tadayoshi Kitayama
发明人： Takashi Mizuochi , Tadayoshi Kitayama
IPC分类号： H04J14/00 , G02B6/12 , G02B6/34 , H04B10/038 , H04B10/079 , H04B10/2507 , H04B10/27 , H04B10/272 , H04B10/275 , H04B10/29 , H04B10/291 , H04J14/02
CPC分类号： G02B6/29395 , G02B6/02085 , G02B6/02138 , G02B6/29353 , G02B6/29355 , G02B6/29358 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0213 , H04J14/0217 , G02B6/29317 , H04J14/02 , H04J14/0206 , H04J14/0221
摘要： A branch circuit is formed by forming an optical filter by means of connecting a wavelength selective reflector to between two units of directional coupler and further assembling three units of the optical filter. In the branch circuit, the three optical filters are connected to each other so that the light coming in from a first optical filter is outputted to a third optical filter when the wave length selective reflector reflects the light, and to a second optical filter when the wavelength selective reflector passes the light therethrough; the light coming in from the second optical filter is outputted to the first optical filter when the wavelength selective reflector reflects the light, and to the third filter when the wavelength selective reflector passes the light therethrough; and also the light coming in from the third optical filter is outputted to the second optical filter when the wavelength selective reflector reflects the light and to the first optical filter when the wavelength selective reflector passes the light therethrough.

8. 发明授权

US5455704A Optical-fiber light amplifier 失效
标题翻译：光纤光放大器
公开(公告)号：US5455704A
公开(公告)日：1995-10-03
申请号：US111378
申请日：1993-08-24
申请人： Takashi Mizuochi , Tadayoshi Kitayama , Katsuhiro Shimizu , Kiwami Matsushita , Nobuyuki Takemura , Eiichi Nakagawa
发明人： Takashi Mizuochi , Tadayoshi Kitayama , Katsuhiro Shimizu , Kiwami Matsushita , Nobuyuki Takemura , Eiichi Nakagawa
IPC分类号： H01S3/094 , H01S3/13 , H01S3/131 , H04B10/152 , H04B10/17 , H04B10/12 , H04B10/00
CPC分类号： H04B10/2912 , H01S3/094003 , H01S3/1301 , H04B10/291 , H04B10/2931 , H04B10/2935 , H01S3/06754 , H01S3/09408 , H04B2210/003
摘要： An optical-fiber light amplifier using rare-earth-doped optical fibers. The light amplifier combines first and second excitation light from first and second sources to form combined excitation light and divides the combined excitation light for inverted distribution to both two optical fibers. The light entered one optical fiber and that entered the other optical fiber are polarized so as to be perpendicular to each other so that fluctuation of output level is prevented without mutual interference. Alternatively the first excitation light and the second excitation light may have different wavelengths; also in this case, fluctuation of level is prevented without any interference.
摘要翻译：一种使用稀土掺杂光纤的光纤光放大器。光放大器组合来自第一和第二源的第一和第二激发光以形成组合的激发光，并将用于反向分配的组合的激发光分成两个光纤。光进入一根光纤，并且进入另一根光纤被极化以便彼此垂直，从而在没有相互干扰的情况下防止输出电平的波动。或者，第一激发光和第二激发光可以具有不同的波长; 在这种情况下，也可以防止水平的波动而不受干扰。

9. 发明授权

US06236488B1 Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods 失效
标题翻译：光脉冲位置检测电路及光脉冲发生装置及其方法
公开(公告)号：US06236488B1
公开(公告)日：2001-05-22
申请号：US09052072
申请日：1998-03-31
申请人： Katsuhiro Shimizu , Takashi Mizuochi , Takeshi Komiya , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Itsuro Morita
发明人： Katsuhiro Shimizu , Takashi Mizuochi , Takeshi Komiya , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Itsuro Morita
IPC分类号： H04B1004
CPC分类号： G02F1/0327 , G01J11/00 , G02F2203/26 , H04J14/08
摘要： Detection of an optical pulse position uses an optical pulse string with a determined repetitive ratio and an electric clock signal with a same frequency as the repetitive ratio of the optical pulse string. A phase of the electric clock signal oscillator is shifted and supplied to an optical modulator. The optical modulator modulates the optical pulse string based on the electric clock signal and outputs a modulated optical signal. A photo detector converts the modulated optical signal output from the optical modulator to an electric signal. The phase shift amount of the electric clock signal is controlled to maximize an output from the photo detector. Additionally, a dither signal may be used in the control of the phase shift, more than the optical modulator may be employed, and/or more than color light source may be employed. The use of at least one of feed forward and feedback control provided by maximizing an output of the photo detector allows an optical pulse having a short width to be realized.
摘要翻译：光脉冲位置的检测使用具有确定的重复比率的光脉冲串和具有与光脉冲串的重复比相同频率的电时钟信号。电时钟信号振荡器的相位移位并提供给光调制器。光调制器基于电时钟信号调制光脉冲串，并输出调制光信号。光检测器将从光调制器输出的调制光信号转换为电信号。控制电时钟信号的相移量使光检测器的输出最大化。另外，抖动信号可以用于相移的控制，可以采用多于光调制器，和/或多于彩色光源。使用通过使光检测器的输出最大化而提供的前馈和反馈控制中的至少一个允许实现具有短宽度的光脉冲。

10. 发明授权

US5861967A Wavelength multiplexed light transfer unit and wavelength multiplexed light transfer system 失效
标题翻译：波长复用光传输单元和波长复用光传输系统
公开(公告)号：US5861967A
公开(公告)日：1999-01-19
申请号：US70560
申请日：1998-04-30
申请人： Takashi Mizuochi , Tadayoshi Kitayama
发明人： Takashi Mizuochi , Tadayoshi Kitayama
IPC分类号： H04J14/00 , G02B6/12 , G02B6/34 , H04B10/038 , H04B10/079 , H04B10/2507 , H04B10/27 , H04B10/272 , H04B10/275 , H04B10/29 , H04B10/291 , H04J14/02
CPC分类号： G02B6/29395 , G02B6/02085 , G02B6/02138 , G02B6/29353 , G02B6/29355 , G02B6/29358 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0213 , H04J14/0217 , G02B6/29317 , H04J14/02 , H04J14/0206 , H04J14/0221
摘要： A branch circuit is formed by forming an optical filter by means of connecting a wavelength selective reflector to between two units of directional coupler and further assembling three units of the optical filter. In the branch circuit, the three optical filters are connected to each other so that the light coming in from a first optical filter is outputted to a third optical filter when the wave length selective reflector reflects the light, and to a second optical filter when the wavelength selective reflector passes the light therethrough; the light coming in from the second optical filter is outputted to the first optical filter when the wavelength selective reflector reflects the light, and to the third filter when the wavelength selective reflector passes the light therethrough; and also the light coming in from the third optical filter is outputted to the second optical filter when the wavelength selective reflector reflects the light and to the first optical filter when the wavelength selective reflector passes the light therethrough.
摘要翻译：通过将波长选择性反射器连接到两个定向耦合器单元之间并且进一步组装光学滤波器的三个单元，形成滤光器形成分支电路。在分支电路中，三个滤光器彼此连接，使得当波长选择反射器反射光时，从第一滤光器入射的光被输出到第三滤光器，并且当第二滤光器波长选择反射器使光通过其中; 当波长选择反射器反射光时，从第二滤光器入射的光被输出到第一滤光器，当波长选择反射器通过光时，输出到第三滤光器; 并且当波长选择反射体反射光时，从第三滤光器入射的光也被输出到第二滤光器，并且当波长选择反射器通过光时，输出到第一滤光器。

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