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1. 发明授权

US6144784A Optical input/output module and light-reflecting device 失效
标题翻译：光输入/输出模块和光反射装置
公开(公告)号：US6144784A
公开(公告)日：2000-11-07
申请号：US209419
申请日：1998-12-11
申请人： Masakazu Shigehara , Shinji Ishikawa , Motoki Kakui , Hiroo Kanamori , Masayuki Nishimura
发明人： Masakazu Shigehara , Shinji Ishikawa , Motoki Kakui , Hiroo Kanamori , Masayuki Nishimura
IPC分类号： G02F1/31 , G02B6/293 , G02B6/34 , H04B10/27 , H04B10/29 , H04J14/00 , H04J14/02 , G02B6/28
CPC分类号： G02B6/2932 , G02B6/29383 , H04J14/0201
摘要： The present invention relates to an optical I/O module and light-reflecting device comprising a structure excellent in expandability having a high degree of freedom in designing. The optical I/O module according to the present invention comprises a directional coupler having, at least, input and output ports for constituting a part of a transmission line and an intermediate port for constituting a branch; and a light-reflecting device, optically connected to the intermediate port, for transmitting therethrough a specific wavelength. This structure can realize various configurations which allow a specific wavelength to be dropped from the transmission line and to be added to the transmission line, without influencing the configuration of the transmission line.
摘要翻译：本发明涉及一种光学I / O模块和光反射装置，其包括在设计中具有高自由度的可扩展性优异的结构。根据本发明的光I / O模块包括定向耦合器，至少具有用于构成传输线的一部分的输入和输出端口以及用于构成分支的中间端口; 以及光反射装置，光学连接到中间端口，用于透射特定波长。该结构可以实现允许特定波长从传输线路丢弃并被添加到传输线路的各种配置，而不影响传输线路的配置。

2. 发明授权

US5446820A Mode field diameter conversion optical fiber 失效
标题翻译：模场直径转换光纤
公开(公告)号：US5446820A
公开(公告)日：1995-08-29
申请号：US98908
申请日：1993-07-29
申请人： Shinji Ishikawa , Hiroo Kanamori , Koji Nakazato , Masayuki Nishimura , Yuichi Ohga
发明人： Shinji Ishikawa , Hiroo Kanamori , Koji Nakazato , Masayuki Nishimura , Yuichi Ohga
IPC分类号： G02B6/02 , G02B6/14 , G02B6/255 , G02B6/10
CPC分类号： G02B6/2552
摘要： An object of this invention is to provide a mode field diameter conversion optical fiber which can be processed in a short period of time to have a reduced mode field diameter at a desired portion thereof. The optical fiber according to this invention comprises a core of silica glass having a residual tensile stress, and a cladding surrounding the core and having a lower refractive index than that of the core. The desired portion is heated to relax the residual tensile stress in the core, whereby the optical fiber has a reduced mode field diameter at the desired portion.
摘要翻译：本发明的目的是提供一种可以在短时间内处理以在其期望部分具有减小的模场直径的模场直径转换光纤。根据本发明的光纤包括具有残余拉伸应力的石英玻璃芯和围绕芯的包层，并且折射率低于芯的折射率。加热所需部分以松弛芯中的残余拉伸应力，由此光纤在期望部分具有减小的模场直径。

3. 发明授权

US07580183B2 Light generator, optical amplifier, and optical communication system 有权
标题翻译：光发生器，光放大器和光通信系统
公开(公告)号：US07580183B2
公开(公告)日：2009-08-25
申请号：US10377104
申请日：2003-03-03
申请人： Motoki Kakui , Toshiaki Okuno , Masayuki Nishimura
发明人： Motoki Kakui , Toshiaki Okuno , Masayuki Nishimura
IPC分类号： G02B26/00 , H01S3/105 , H01S3/23 , H04B10/12
CPC分类号： H04B10/2942 , H04B10/2916
摘要： In an optical amplifier according to the present invention, a change signal from a change signal source is fed into a light source or a drive circuit. The wavelength of light outputted from the light source is changed based on the change signal. The wavelength-changed output light from the light source is outputted as pumping light from a pumping light generator to be supplied backwardly via an optical multiplexer/demultiplexer into an optical fiber. Signal light is Raman-amplified in the optical fiber with the supply of the pumping light.
摘要翻译：在根据本发明的光放大器中，来自改变信号源的改变信号被馈送到光源或驱动电路中。从光源输出的光的波长根据变化信号而改变。来自光源的波长变化的输出光作为来自泵浦光发生器的泵浦光输出，经由光复用器/解复用器向后供给到光纤中。信号光在提供泵浦光的情况下在光纤中进行拉曼放大。

4. 发明授权

US06806999B2 Raman amplification pumping module, Raman amplifier, and optical communication system 失效
标题翻译：拉曼放大泵浦模块，拉曼放大器和光通信系统
公开(公告)号：US06806999B2
公开(公告)日：2004-10-19
申请号：US10127449
申请日：2002-04-23
申请人： Tetsufumi Tsuzaki , Motoki Kakui , Masayuki Nishimura
发明人： Tetsufumi Tsuzaki , Motoki Kakui , Masayuki Nishimura
IPC分类号： H01S300
CPC分类号： H01S3/0941 , H01S3/06725 , H01S3/06754 , H01S3/094096 , H01S3/302
摘要： The present invention provides a Raman amplification pumping module and others with a structure for effectively suppressing degradation of quality of signal light even with a breakdown in either one of a plurality of light sources. The Raman amplification pumping module is provided with light sources for emitting respective lightwaves with center wavelengths different from each other, and each of the center wavelengths of the lightwaves from these light sources is adjusted so that a difference between two center wavelengths selected therefrom is less than 6 nm.
摘要翻译：本发明提供了一种拉曼放大泵浦模块等，其具有即使在多个光源中的任一个中的击穿的情况下也可有效地抑制信号光的质量劣化的结构。拉曼放大泵浦模块设置有用于发射具有彼此不同的中心波长的各个光波的光源，并且调节来自这些光源的光波的每个中心波长，使得从其中选择的两个中心波长之间的差小于 6nm。

5. 发明授权

US06892003B2 Variable dispersion compensator and optical transmission system 有权
标题翻译：可变色散补偿器和光传输系统
公开(公告)号：US06892003B2
公开(公告)日：2005-05-10
申请号：US10114321
申请日：2002-04-03
申请人： Makoto Katayama , Toshiaki Okuno , Masayuki Nishimura , Tomomi Sano , Masakazu Shigehara , Hiroshi Suganuma , Toru Iwashima , Tomohiko Kanie
发明人： Makoto Katayama , Toshiaki Okuno , Masayuki Nishimura , Tomomi Sano , Masakazu Shigehara , Hiroshi Suganuma , Toru Iwashima , Tomohiko Kanie
IPC分类号： H04B10/18 , G02B6/26 , G02B6/35 , H04J14/02
CPC分类号： H04B10/25133
摘要： An optical signal, which is to become the subject of dispersion compensation, is split by optical combining/splitting unit 2, and each frequency component of the optical signal that is split is reflected by the corresponding reflective mirror 30 included in reflective mirror group 3 to apply a predetermined phase shift to the respective frequency components Each reflected frequency component is then combined using optical combining/splitting unit 2, to give dispersion compensated optical signal Furthermore, in regards to reflective mirror group 3, which is used to apply phase shift to each frequency component of an optical signal, each of the respective plurality of reflective mirrors 30 is made a movable mirror having a movable reflection position that reflects the frequency components. Through this, dispersion that develops in an optical signal may be compensated with favorable controllability and high accuracy. Therefore, the precision and controllability of dispersion compensation will become superior, and realized is a variable dispersion compensator having a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator,
摘要翻译：要成为色散补偿的对象的光信号被光学合成/分离单元2分离，并且被分离的光信号的每个频率分量被包括在反射镜组3中的相应的反射镜30反射到对相应的频率分量施加预定的相移。然后使用光学合成/分离单元2组合每个反射频率分量，以产生色散补偿的光信号。此外，关于反射镜组3，其用于将相移施加到每个光信号的频率分量，各个反射镜30中的每一个被制成具有反映频率分量的可移动反射位置的可移动反射镜。由此，可以以良好的可控性和高精度补偿在光信号中产生的色散。因此，色散补偿的精度和可控性将变得更好，并且实现了具有小型化光电路的可变色散补偿器和包括这种可变色散补偿器的光传输系统，

6. 再颁专利

USRE38086E1 Dispersion compensating fiber and optical transmission system including the same 有权
标题翻译：色散补偿光纤和光传输系统包括它们
公开(公告)号：USRE38086E1
公开(公告)日：2003-04-22
申请号：US09714615
申请日：2000-11-17
申请人： Masashi Onishi , Hiroo Kanamori , Masayuki Nishimura , Tomonori Kashiwada , Yasushi Koyano
发明人： Masashi Onishi , Hiroo Kanamori , Masayuki Nishimura , Tomonori Kashiwada , Yasushi Koyano
IPC分类号： G02B616
CPC分类号： G02B6/02261 , C03B37/014 , C03B2203/22 , C03B2203/36 , G02B6/02004 , G02B6/0228 , G02B6/02285 , G02B6/0281 , G02B6/0283 , G02B6/0286 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/29377 , H01S3/06729 , H01S3/302
摘要： The present invention relates to a dispersion compensating fiber for improving a transmission system with it in total chromatic dispersion and dispersion slope in the 1.55 &mgr;m wavelength band. The dispersion compensating fiber according to the present invention is characterized by having the following characteristics for light in the 1.55 &mgr;m wavelength band: chromatic dispersion not less than −40 ps/km/nm and not more than 0 ps/km/nm; dispersion slope not less than −0.5 ps/km/nm2 and not more than −0.1 ps/km/nm2; transmission loss not more than 0.5 dB/km; polarization mode dispersion not more than 0.7 ps.km−½; mode field diameter not less than 4.5 &mgr;m and not more than 6.5 &mgr;m; cut-off wavelength not less than 0.7 &mgr;m and not more than 1.7 &mgr;m in the length of 2 m; and bending loss at the diameter of 20 mm, not more than 100 dB/m. The dispersion compensating fiber is optically connected with a dispersion shifted fiber as a compensated object at a ratio of appropriate lengths, which can improve the system including the dispersion compensating fiber in the total chromatic dispersion and dispersion slope of the system in the 1.55 &mgr;m band.
摘要翻译：本发明涉及一种用于改善传输系统的色散补偿光纤在1.55μm波长带中的总色散和色散斜率。根据本发明的色散补偿光纤的特征在于对于1.55μm波长带中的光具有以下特性：色散不小于-40ps / km / nm且不大于0ps / km / nm; 色散斜率不小于-0.5 ps / km / nm2，不大于-0.1 ps / km / nm2; 传输损耗不超过0.5 dB / km; 偏振模色散不大于0.7 ps.km-½; 模场直径不小于4.5μm，不大于6.5μm; 截止波长不小于0.7μm和不大于1.7μm，长度为2μm; 弯曲损耗为20mm，不大于100dB / m。色散补偿光纤以适当长度的比率与作为补偿对象的色散位移光纤光学连接，这可以改善包括色散补偿光纤在1.55mum带中的系统的总色散和色散斜率的系统。

7. 发明授权

US5838867A Dispersion compensating fiber and optical transmission system including the same 失效
标题翻译：色散补偿光纤和光传输系统包括它们
公开(公告)号：US5838867A
公开(公告)日：1998-11-17
申请号：US834305
申请日：1997-04-15
申请人： Masashi Onishi , Hiroo Kanamori , Masayuki Nishimura , Tomonori Kashiwada , Yasushi Koyano
发明人： Masashi Onishi , Hiroo Kanamori , Masayuki Nishimura , Tomonori Kashiwada , Yasushi Koyano
IPC分类号： C03B37/014 , G02B6/34 , H01S3/067 , H01S3/30 , G02B6/16
CPC分类号： G02B6/02261 , C03B37/014 , G02B6/02004 , G02B6/0228 , G02B6/02285 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/29377 , C03B2203/22 , C03B2203/36 , G02B6/0281 , G02B6/0283 , G02B6/0286 , H01S3/06729 , H01S3/302
摘要： The present invention relates to a dispersion compensating fiber for improving a transmission system with it in total chromatic dispersion and dispersion slope in the 1.55 .mu.m wavelength band. The dispersion compensating fiber according to the present invention is characterized by having the following characteristics for light in the 1.55 .mu.m wavelength band: chromatic dispersion not less than -40 ps/km/nm and not more than 0 ps/km/nm; dispersion slope not less than -0.5 ps/km/nm.sup.2 and not more than -0.1 ps/km/nm.sup.2 ; transmission loss not more than 0.5 dB/km; polarization mode dispersion not more than 0.7 ps.multidot.km.sup.-1/2 ; mode field diameter not less than 4.5 .mu.m and not more than 6.5 .mu.m; cut-off wavelength not less than 0.7 .mu.m and not more than 1.7 .mu.m in the length of 2 m; and bending loss at the diameter of 20 mm, not more than 100 dB/m. The dispersion compensating fiber is optically connected with a dispersion shifted fiber as a compensated object at a ratio of appropriate lengths, which can improve the system including the dispersion compensating fiber in the total chromatic dispersion and dispersion slope of the system in the 1.55 .mu.m band.
摘要翻译：本发明涉及一种用于改善传输系统的色散补偿光纤，其在1.55μm波长带中的总色散和色散斜率。根据本发明的色散补偿光纤的特征在于对于1.55μm波长带中的光具有以下特性：色散不低于-40ps / km / nm且不大于0ps / km / nm; 色散斜率不小于-0.5 ps / km / nm2，不大于-0.1 ps / km / nm2; 传输损耗不超过0.5 dB / km; 偏振模色散不大于0.7 psxkm- + E，fra 1/2 + EE; 模场直径不小于4.5亩，不超过6.5亩; 截止波长不小于0.7μm，长度不超过1.7μm; 弯曲损耗为20mm，不大于100dB / m。色散补偿光纤以适当长度的比例与作为补偿对象的色散位移光纤光学连接，这可以改善包括色散补偿光纤在1.55μm带中的系统的总色散和色散斜率的系统。

8. 发明授权

US5381503A Mode field diameter conversion fiber 失效
标题翻译：模场直径转换光纤
公开(公告)号：US5381503A
公开(公告)日：1995-01-10
申请号：US61385
申请日：1993-05-14
申请人： Hiroo Kanamori , Koji Nakazato , Masayuki Nishimura , Shigeru Tomita
发明人： Hiroo Kanamori , Koji Nakazato , Masayuki Nishimura , Shigeru Tomita
IPC分类号： G02B6/255 , G02B6/26 , G02B6/10
CPC分类号： G02B6/262 , G02B6/2552
摘要： There is disclosed an optical waveguide comprising a core portion made of a light propagating material and a cladding portion, a first dopant and a second dopant being induced into said core portion, the first dopant having a function of increasing a refractive index of the light propagating material and having a first thermal diffusion coefficient to said light propagating material, the second dopant having a function of decreasing the refractive index of said light propagating material and having a second thermal diffusion coefficient to the light propagating material larger than the first thermal diffusion coefficient under a predetermined temperature.
摘要翻译：公开了一种光波导，包括由光传播材料和包层部分构成的芯部分，第一掺杂剂和第二掺杂剂被诱导到所述芯部分中，第一掺杂剂具有增加传播光的折射率的功能材料，并且对所述光传播材料具有第一热扩散系数，第二掺杂剂具有降低所述光传播材料的折射率并且具有比第一热扩散系数大的第二热扩散系数的第二热扩散系数的函数，预定温度。

9. 发明授权

US06347174B1 Non-linear optical fiber, optical fiber coil, and wavelength converter 有权
标题翻译：非线性光纤，光纤线圈和波长转换器
公开(公告)号：US06347174B1
公开(公告)日：2002-02-12
申请号：US09297173
申请日：1999-07-06
申请人： Masashi Onishi , Toshiaki Okuno , Shinji Ishikawa , Tomonori Kashiwada , Masayuki Nishimura
发明人： Masashi Onishi , Toshiaki Okuno , Shinji Ishikawa , Tomonori Kashiwada , Masayuki Nishimura
IPC分类号： H04N591
CPC分类号： G02B6/03644 , G02B6/02028 , G02B6/02242 , G02B6/02276 , G02B6/0228 , G02B6/03627 , G02B6/03655 , G02B6/105 , G02F1/383
摘要： The present invention relates to a nonlinear optical fiber which can generate a nonlinear optical phenomenon with high efficiency, an optical fiber coil wound with the nonlinear optical fiber, and a wavelength converter equipped with the nonlinear optical fiber. In particular, the nonlinear optical fiber according to the present invention has, as characteristics with respect to input light having a predetermined wavelength, a mode field diameter of 5 &mgr;m or less, a polarization mode dispersion of 1 ps/km½ or less or a fixed plane of polarization, a zero-dispersion wavelength of not less than 1.5 &mgr;m but not greater than 1.6 &mgr;m, a cutoff wavelength of not less than 1.4 &mgr;m but not greater than 1.7 &mgr;m at a length of 2 m, a transmission loss of 3 dB/km or less, and a nonlinear coefficient of 10/W/km or more. As a result of this configuration, the nonlinear optical fiber generates, with high efficiency, desirable converted light occurring upon the nonlinear phenomenon.
摘要翻译：本发明涉及一种能够高效率地产生非线性光学现象的非线性光纤，与非线性光纤缠绕的光纤线圈以及配备非线性光纤的波长转换器。特别地，根据本发明的非线性光纤作为具有预定波长的输入光的特性，模场直径为5um以下，偏振模色散为1ps / km 1/2以下或固定偏振平面，零分散波长不小于1.5μm但不大于1.6μm，截止波长不小于1.4μm，但不大于1.7μm，长度为2μm，传输损耗为3dB / km以下，非线性系数为10 / W / km以上。作为该结构的结果，非线性光纤以非线性现象产生期望的转换光，高效率地产生。

10. 发明授权

US06535677B1 Dispersion-managed optical fiber, method of manufacturing the same, optical communication system including the same and optical fiber preform therefor 有权
标题翻译：色散管理光纤，其制造方法，包括该光纤的光通信系统和光纤预制棒
公开(公告)号：US06535677B1
公开(公告)日：2003-03-18
申请号：US09668347
申请日：2000-09-25
申请人： Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Eisuke Sasaoka , Takatoshi Kato
发明人： Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Eisuke Sasaoka , Takatoshi Kato
IPC分类号： G02B602
CPC分类号： G02B6/02242 , C03B37/0253 , C03B37/027 , C03B37/02745 , C03B37/032 , C03B2201/31 , C03B2203/19 , C03B2203/22 , C03B2203/36 , C03B2205/06 , C03B2205/40 , C03B2205/72 , C03C25/1062 , C03C25/223 , G02B6/02247 , G02B6/02257 , G02B6/02271 , G02B6/03627 , G02B6/03633 , G02B6/03644 , G02B6/0365 , G02B6/03666 , G02B6/29377
摘要： The present invention relates to a dispersion-managed optical fiber which can be manufactured easily and has a structure which enables the easy connection thereof with other optical fiber and the like. The dispersion-managed optical fiber is a silica-based optical fiber ensuring its single mode at a predetermined wavelength within a signal wavelength band, in which first portions each having a positive chromatic dispersion and second portions each having a negative chromatic dispersion are arranged alternately and adjacent to each other. In the dispersion-managed optical fiber, the dopant concentration is made uniform in the longitudinal direction and, corresponding to the above-mentioned first and second portions, the refractive index of a glass layer not doped with GeO2 as a dopant is adjusted or the residual stresses in glass layers are changed.
摘要翻译：本发明涉及一种易于制造的色散管理光纤，并且具有能够容易地与其他光纤等连接的结构。色散管理光纤是一种二氧化硅基光纤，其确保在信号波长带内的预定波长的单模，其中每个具有正色散的第一部分和每个具有负色散的第二部分交替排列，相邻。在色散管理的光纤中，掺杂剂浓度在纵向上均匀，并且对应于上述第一和第二部分，调整未掺杂有GeO 2作为掺杂剂的玻璃层的折射率或残余物玻璃层的应力发生变化。

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