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1. 发明申请

US20130039643A1 OPTICAL COMMUNICATION SYSTEM 审中-公开
标题翻译：光通信系统
公开(公告)号：US20130039643A1
公开(公告)日：2013-02-14
申请号：US13642723
申请日：2010-04-23
申请人： Toshiyuki Tokura , Katsuhiro Shimizu , Kazuyuki Ishida , Takashi Mizuochi
发明人： Toshiyuki Tokura , Katsuhiro Shimizu , Kazuyuki Ishida , Takashi Mizuochi
IPC分类号： H04J14/02
CPC分类号： H04J14/0297 , H04B10/032 , H04J14/0295
摘要： An optical communication system including optical transmission systems each includes a transmission processing unit and a receiving processing unit, wherein the transmission processing unit includes an optical transmission unit that converts electric signals into optical signals, an auxiliary optical transmission unit that converts a part of the electric signals into an optical signal having a wavelength other than wavelengths of the optical signals generated by the optical transmission unit, and outputs the generated optical signal to a different transmission processing unit, and a wavelength multiplexing unit, and the receiving processing unit includes a wavelength demultiplexing unit, an optical receiving unit that converts the optical signals having the wavelengths of the optical signals generated by the optical transmission unit into electric signals, respectively, and an auxiliary optical receiving unit that converts the optical signal having the wavelength of the optical signal generated by the auxiliary optical transmission unit.
摘要翻译：包括光传输系统的光通信系统各自包括传输处理单元和接收处理单元，其中传输处理单元包括将电信号转换为光信号的光传输单元，将一部分电信号转换成具有由光传输单元生成的光信号的波长以外的波长的光信号，并将生成的光信号输出到不同的发送处理单元和波长复用单元，并且接收处理单元包括波长解复用单元，光接收单元，其将具有由光传输单元生成的光信号的波长的光信号分别转换为电信号;以及辅助光接收单元，其将具有光信号波长的光信号由辅助光传输单元产生。

2. 发明申请

US20130129356A1 OPTICAL COMMUNICATION SYSTEM 有权
标题翻译：光通信系统
公开(公告)号：US20130129356A1
公开(公告)日：2013-05-23
申请号：US13814513
申请日：2010-09-03
申请人： Toshiyuki Tokura , Kazuyuki Ishida , Takashi Mizuochi
发明人： Toshiyuki Tokura , Kazuyuki Ishida , Takashi Mizuochi
IPC分类号： H04J14/02 , H04B10/29
CPC分类号： H04J14/02 , H04B10/0777 , H04B10/29 , H04B10/2916 , H04B2210/074 , H04J14/0276
摘要： An optical communication system includes an optical-signal transmission unit transmitting an existing optical signal and a low-rate-signal superimposition unit superimposing a low-rate signal on the existing optical signal by intensity modulation. It further includes: a low-rate-signal extraction unit that extracts the low-rate signal from the existing optical signal on which the low-rate signal is superimposed and converts the extracted low-rate signal into a low-rate electric signal; an add-on optical-signal transmission unit that transmits an add-on optical signal; a low-rate-signal superimposition unit that superimposes a low-rate signal on the add-on optical signal by the intensity modulation based on the low-rate electric signal; and a repeater that repeats the add-on optical signal on which the low-rate signal is superimposed, to a transmission destination.
摘要翻译：光通信系统包括光信号传输单元，其通过强度调制将现有光信号和低速信号叠加单元传输到现有光信号上。其还包括：低速率信号提取单元，从叠加了低速率信号的现有光信号中提取低速信号，并将提取的低速信号转换为低速电信号; 发送附加光信号的附加光信号传输单元; 低速率信号叠加单元，其通过基于低速率电信号的强度调制将低速率信号叠加在附加光信号上; 以及将重叠了低速率信号的附加光信号重复到发送目的地的中继器。

3. 发明授权

US09036995B2 Optical communication system 有权
标题翻译：光通信系统
公开(公告)号：US09036995B2
公开(公告)日：2015-05-19
申请号：US13814513
申请日：2010-09-03
申请人： Toshiyuki Tokura , Kazuyuki Ishida , Takashi Mizuochi
发明人： Toshiyuki Tokura , Kazuyuki Ishida , Takashi Mizuochi
IPC分类号： H04J14/02 , H04B10/077 , H04B10/29 , H04B10/291
CPC分类号： H04J14/02 , H04B10/0777 , H04B10/29 , H04B10/2916 , H04B2210/074 , H04J14/0276
摘要： An optical communication system includes an optical-signal transmission unit transmitting an existing optical signal and a low-rate-signal superimposition unit superimposing a low-rate signal on the existing optical signal by intensity modulation. It further includes: a low-rate-signal extraction unit that extracts the low-rate signal from the existing optical signal on which the low-rate signal is superimposed and converts the extracted low-rate signal into a low-rate electric signal; an add-on optical-signal transmission unit that transmits an add-on optical signal; a low-rate-signal superimposition unit that superimposes a low-rate signal on the add-on optical signal by the intensity modulation based on the low-rate electric signal; and a repeater that repeats the add-on optical signal on which the low-rate signal is superimposed, to a transmission destination.
摘要翻译：光通信系统包括光信号传输单元，其通过强度调制将现有光信号和低速信号叠加单元传输到现有光信号上。其还包括：低速率信号提取单元，从叠加了低速率信号的现有光信号中提取低速信号，并将提取的低速信号转换为低速电信号; 发送附加光信号的附加光信号传输单元; 低速率信号叠加单元，其通过基于低速率电信号的强度调制将低速率信号叠加在附加光信号上; 以及将重叠了低速率信号的附加光信号重复到发送目的地的中继器。

4. 发明授权

US07068421B2 Raman amplifier and optical relay transmission system 有权
标题翻译：拉曼放大器和光中继传输系统
公开(公告)号：US07068421B2
公开(公告)日：2006-06-27
申请号：US10654438
申请日：2003-09-04
申请人： Toshiyuki Tokura , Taichi Kogure , Satoshi Kajiya , Takashi Mizuochi
发明人： Toshiyuki Tokura , Taichi Kogure , Satoshi Kajiya , Takashi Mizuochi
IPC分类号： H01S3/00 , H04B10/13 , H04B10/08
CPC分类号： H04B10/2916
摘要： An optical fiber propagates and amplifies a second signal light that is a wavelength-multiplexed signal of a first signal light of a plurality of wavelengths and a reference light that is out of a wavelength range of amplification. An excitation light source outputs an excitation light for amplifying the second signal light. A beam splitter splits a portion of the second signal light into the first signal light and the reference light. A signal light level detecting unit detects a level of the first signal light. A reference light level detecting unit detects a level of the reference light. A signal level setting unit calculates a target value for constantly maintaining a Raman gain, and controls the output level of the excitation light in such a way that the first signal level matches with the target value.
摘要翻译：光纤传播并放大作为多个波长的第一信号光的波长复用信号的第二信号光和不在放大的波长范围内的参考光。激发光源输出用于放大第二信号光的激发光。分束器将第二信号光的一部分分成第一信号光和参考光。信号光电平检测单元检测第一信号光的电平。参考光电平检测单元检测参考光的电平。信号电平设定单元计算用于不断维持拉曼增益的目标值，并以使第一信号电平与目标值相匹配的方式控制激励光的输出电平。

5. 发明申请

US20050099676A1 Raman amplifier and optical relay transmission system 有权
标题翻译：拉曼放大器和光中继传输系统
公开(公告)号：US20050099676A1
公开(公告)日：2005-05-12
申请号：US10654438
申请日：2003-09-04
申请人： Toshiyuki Tokura , Taichi Kogure , Satoshi Kajiya , Takashi Mizuochi
发明人： Toshiyuki Tokura , Taichi Kogure , Satoshi Kajiya , Takashi Mizuochi
IPC分类号： G02F1/35 , H01S3/10 , H01S3/30 , H04B10/077 , H04B10/079 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2916
摘要： An optical fiber propagates and amplifies a second signal light that is a wavelength-multiplexed signal of a first signal light of a plurality of wavelengths and a reference light that is out of a wavelength range of amplification. An excitation light source outputs an excitation light for amplifying the second signal light. A beam splitter splits a portion of the second signal light into the first signal light and the reference light. A signal light level detecting unit detects a level of the first signal light. A reference light level detecting unit detects a level of the reference light. A signal level setting unit calculates a target value for constantly maintaining a Raman gain, and controls the output level of the excitation light in such a way that the first signal level matches with the target value.
摘要翻译：光纤传播并放大作为多个波长的第一信号光的波长复用信号的第二信号光和不在放大的波长范围内的参考光。激发光源输出用于放大第二信号光的激发光。分束器将第二信号光的一部分分成第一信号光和参考光。信号光电平检测单元检测第一信号光的电平。参考光电平检测单元检测参考光的电平。信号电平设定单元计算用于不断维持拉曼增益的目标值，并以使第一信号电平与目标值相匹配的方式控制激励光的输出电平。

6. 发明授权

US08909066B2 Optical transfer system, optical transmission device, and optical reception device 有权
标题翻译：光传输系统，光传输设备和光接收设备
公开(公告)号：US08909066B2
公开(公告)日：2014-12-09
申请号：US13814617
申请日：2011-09-30
申请人： Tsuyoshi Yoshida , Takashi Sugihara , Kazuyuki Ishida , Takashi Mizuochi
发明人： Tsuyoshi Yoshida , Takashi Sugihara , Kazuyuki Ishida , Takashi Mizuochi
IPC分类号： H04B10/00 , H04J14/06 , H04B10/50 , H04B10/61 , H04J14/00 , H04B10/532
CPC分类号： H04J14/06 , H04B10/5053 , H04B10/532 , H04B10/616 , H04J14/002
摘要： In an optical transfer system, an optical transmission unit generates an optical signal in which respective polarization components are alternately present on a time axis, a time period during which the respective polarization components are simultaneously present on the time axis is substantially zero, and a symbol repetition cycle of optical signals of the respective polarization components becomes Ts, an optical reception unit causes an interference between local oscillation light and a received optical signal and converts an interfered optical signal to an electric signal, and a received electric-signal processing unit performs analog-digital conversion of an electric signal, elimination of a delay difference of Ts/2 between the respective polarized signal components, and adaptive equalization of a distortion other than the delay difference.
摘要翻译：在光传输系统中，光传输单元产生在时间轴上交替存在各偏振分量的光信号，时间轴上同时存在各偏振分量的时间段基本上为零，以及符号各个偏振分量的光信号的重复周期变为Ts，光接收单元引起局部振荡光和接收到的光信号之间的干扰，并将干扰的光信号转换为电信号，并且接收的电信号处理单元执行模拟电信号的数字转换，消除各极化信号分量之间的Ts / 2的延迟差，以及除了延迟差之外的失真的自适应均衡。

7. 发明申请

US20060245763A1 Optical transmitter 失效
标题翻译：光发射机
公开(公告)号：US20060245763A1
公开(公告)日：2006-11-02
申请号：US10562147
申请日：2003-08-27
申请人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
发明人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/508 , H04B10/5162 , H04B10/5561
摘要： A differential encoder generates a differentially encoded signal based on a data signal. An RZ (return to zero) encoder generates an electric RZ differential signal as an RZ signal in an electric area based on the differentially encoded signal. A Mach-Zehnder interferometer type intensity modulator generates an optical RZ-DSPK (differential phase shift keying) signal as an RZ signal in an optical area based on the electric RZ differential signal.
摘要翻译：差分编码器基于数据信号产生差分编码信号。 RZ（返回零）编码器基于差分编码信号在电区域中产生作为RZ信号的电RZ差分信号。马赫曾德干涉仪型强度调制器基于电RZ差分信号在光学区域中产生作为RZ信号的光学RZ-DSPK（差分相移键控）信号。

8. 发明授权

US07239673B2 Optical reception apparatus 有权
标题翻译：光接收装置
公开(公告)号：US07239673B2
公开(公告)日：2007-07-03
申请号：US10416550
申请日：2002-09-12
申请人： Kazushige Sawada , Kazuo Kubo , Takashi Mizuochi , Hideo Yoshida , Hachiro Fujita , Katsuhiro Shimizu , Junichi Abe
发明人： Kazushige Sawada , Kazuo Kubo , Takashi Mizuochi , Hideo Yoshida , Hachiro Fujita , Katsuhiro Shimizu , Junichi Abe
IPC分类号： H03K9/00 , H04L27/00
CPC分类号： H03M13/6325 , G11B20/1833 , H04B10/695 , H04L1/004 , H04L25/063 , H04L25/067
摘要： An optical receiver includes a soft-decision deciding unit (7) for deciding an electric received signal according to a plurality of decision levels to output a multivalued decision signal, a demultiplexing unit (5) for serial-to-parallel converting the multivalued decision signal to output a multivalued parallel signal, a soft-decision error correction decoding unit (8) for correcting the multivalued parallel signal based on reliability information to output an error-corrected parallel received signal and decision results indicating the decision of the electric received signal according to the plurality of decision levels, a probability density distribution estimation unit (9) for estimating probability density distributions based on distributions of the decision results, and a decision level control unit (10) for controlling the plurality of decision levels based on the probability density distributions, thereby improving the transmission quality.
摘要翻译：一种光接收机包括：软判决决定单元，用于根据多个判决电平决定电接收信号以输出多值判定信号;解复用单元，用于串并转换多值判定信号; 输出多值并行信号;软判决纠错解码单元，用于根据可靠性信息校正多值并行信号，以输出纠错后的并行接收信号;以及判定结果，其指示电接收信号根据所述多个判定级别，基于所述判定结果的分布来估计概率密度分布的概率密度分布估计单元（9），以及用于基于所述概率密度分布来控制所述多个判定级别的判定级别控制单元（10），从而提高传输质量。

9. 发明授权

US07236703B1 Optical wavelength division multiplexing device 有权
标题翻译：光波分复用装置
公开(公告)号：US07236703B1
公开(公告)日：2007-06-26
申请号：US10088503
申请日：2000-07-31
申请人： Shigeo Yamanaka , Takashi Mizuochi , Katsuhiro Shimizu , Koji Goto , Shinichi Nakagawa , Eiichi Shibano , Tadami Yasuda
发明人： Shigeo Yamanaka , Takashi Mizuochi , Katsuhiro Shimizu , Koji Goto , Shinichi Nakagawa , Eiichi Shibano , Tadami Yasuda
IPC分类号： H04J14/02
CPC分类号： H04B10/50 , G02B6/266 , G02B6/29376 , H04J14/02 , H04J14/0221
摘要： As is described above, an optical wavelength division multiplexing and transmission apparatus according to the present invention has the configuration in which a plurality of slave racks coupling to a master rack can be additionally installed one after another with the master rack. Therefore, in cases where it is desired to expand a function of a transmitter and a function of a receiver due to the increase of a quality of information to be transmitted, the additional installation of the slave rack can be performed without exerting influence on a communication means installed in advance and currently used. Accordingly, it can be expected that the optical wavelength division multiplexing and transmission apparatus is adapted for the optical communication service which is more and more increased in the future.
摘要翻译：如上所述，根据本发明的光波分复用和发送装置具有这样的配置，其中可以与主机架一个接一个地附加地安装耦合到主机架的多个从机架。因此，在由于要发送的信息的质量的增加而期望扩展发射机的功能和接收机的功能的情况下，可以执行从机架的附加安装而不对通信产生影响意味着事先安装，目前使用。因此，可以预期光波分复用和发送装置适用于将来越来越多的光通信业务。

10. 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.

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