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1. 发明授权

US07016614B1 Optical wavelength division multiplexing transmission suppressing four-wave mixing and SPM-GVD effects 失效
标题翻译：光波分复用传输抑制四波混频和SPM-GVD效应
公开(公告)号：US07016614B1
公开(公告)日：2006-03-21
申请号：US09723292
申请日：2000-11-28
申请人： Satoshi Kajiya , Katsuhiro Shimizu , Yukio Kobayashi , Takashi Mizuochi
发明人： Satoshi Kajiya , Katsuhiro Shimizu , Yukio Kobayashi , Takashi Mizuochi
IPC分类号： H04B10/00
CPC分类号： H04J14/0227 , H04B10/291
摘要： An optical repeater is provided between a first optical fiber transmission path and a second optical fiber transmission path having a zero-dispersion wavelength different from the first optical fiber transmission path. This optical repeater wave-converts a wavelength division multiplex signal input from the first optical fiber transmission path with respect to respective wavelengths thereof, and outputs the wave-converted signal to the second optical fiber transmission path.
摘要翻译：在第一光纤传输路径和具有不同于第一光纤传输路径的零色散波长的第二光纤传输路径之间提供光中继器。该光中继器相对于其波长对从第一光纤传输路径输入的波分复用信号进行波变换，并将该波转换信号输出到第二光纤传输路径。

2. 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。

3. 发明授权

US06970650B2 One-core two-way optical transmission system 失效
标题翻译：单核双向光传输系统
公开(公告)号：US06970650B2
公开(公告)日：2005-11-29
申请号：US10477535
申请日：2003-02-26
申请人： Satoshi Kajiya , Kaoru Kinjo , Takashi Mizuochi
发明人： Satoshi Kajiya , Kaoru Kinjo , Takashi Mizuochi
IPC分类号： G02F1/35 , H01S3/10 , H01S3/30 , H04B10/00 , H04B10/2563 , H04J14/00 , H04J14/02
CPC分类号： H04B10/2971 , H04B10/2503 , H04B10/2916
摘要： In a one-fiber bidirectional optical transmission system in which output optical signals of optical transmitter-receivers respectively connected to the opposite ends of one optical fiber transmission line are bidirectionally transmitted in the optical fiber transmission line, which utilizes a Raman amplification effect by backward pumping, a frequency satisfying the conditions of |fs1−f0|≠|fp2−f0| and |fs2−f0|≠|fp1−f0| is selected, where f0 is a zero dispersion frequency of the optical fiber transmission line, fs1 and fs2 are the frequencies of the first signal and the second signal, respectively, and fp1 and fp2 are frequencies of the first Raman pump light and the second Raman pump light, respectively.
摘要翻译：在单纤双向光传输系统中，其中分别连接到一根光纤传输线的相对端的光发射器 - 接收器的输出光信号在光纤传输线中双向传输，其利用通过反向泵浦的拉曼放大效应满足以下条件的频率满足条件| f | ＆lt; f＆gt;＆lt;＆lt;＆lt;＆lt; /＆gt; 被选择，其中f 0是光纤传输线的零色散频率，f s1和f 2 s 2是第一个信号和第二信号，f 1 p1和f 2 p 2分别是第一拉曼泵浦光和第二拉曼泵浦光的频率。

4. 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。

5. 发明授权

US07269349B2 Method of and device for performing bi-directional transmission using a single-wire 失效
标题翻译：使用单线执行双向传输的方法和设备
公开(公告)号：US07269349B2
公开(公告)日：2007-09-11
申请号：US10124348
申请日：2002-04-18
申请人： Kaoru Kinjo , Satoshi Kajiya , Takashi Mizuochi
发明人： Kaoru Kinjo , Satoshi Kajiya , Takashi Mizuochi
IPC分类号： H04B10/08 , H04J14/02
CPC分类号： H04B10/2971 , H04B10/2916 , H04B10/297
摘要： Two signal lights having different wavelengths are bidirectionally transmitted on an optical-fiber transmission-line. A Raman pump light source generates a first Raman pump light having predetermined wavelengths with a Raman gain-bandwidth for amplifying the first signal light and without response to the second signal light. Another Raman pump light source generates a second Raman pump light having predetermined wavelengths with a Raman gain-bandwidth for amplifying the second signal light and without response to the first signal light. The first Raman pump light and the second Raman pump light are differently injected from respective input/output terminals into the optical-fiber transmission-line by optical combining and branching filters.
摘要翻译：具有不同波长的两个信号光在光纤传输线上双向传输。拉曼泵浦光源产生具有拉曼增益带宽的预定波长的第一拉曼泵浦光，用于放大第一信号光并且不响应于第二信号光。另一个拉曼泵浦光源产生具有拉曼增益带宽的预定波长的第二拉曼泵浦光，用于放大第二信号光并且不响应第一信号光。第一拉曼泵浦光和第二拉曼泵浦光通过光学组合和分支滤波器从各个输入/输出端子不同地注入光纤传输线。

6. 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。

7. 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。

8. 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.

9. 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。

10. 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。

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