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21. 发明授权

US06788865B2 Polarization maintaining optical fiber with improved polarization maintaining property 失效
标题翻译：极化维持光纤的极化保持性能
公开(公告)号：US06788865B2
公开(公告)日：2004-09-07
申请号：US09799150
申请日：2001-03-05
申请人： Satoki Kawanishi , Katsunari Okamoto
发明人： Satoki Kawanishi , Katsunari Okamoto
IPC分类号： G02B620
CPC分类号： G02B6/02328 , G02B6/02347 , G02B6/02357 , G02B6/105
摘要： A polarization maintaining optical fiber is formed by using a core in a cross sectional shape having different diameters along two orthogonal axes defined on a plane perpendicular to an optical axis, or a photonic crystal structure cladding having a diffraction grating with lattice intervals for realizing confinement of lights within the core which are different along two orthogonal axes defined on a plane perpendicular to an optical axis, or the photonic crystal structure cladding that is divided into four divided portions along a circumferential direction, where at least a part of lattice holes in a first pair of divided portions that are facing each other along one direction have a diameter larger than that of lattice holes in a second pair of divided portions that are facing each other along another direction orthogonal to the one direction.
摘要翻译：通过使用具有沿垂直于光轴的平面上限定的两个正交轴的具有不同直径的横截面形状的芯或具有用于实现限制的晶格间隔的衍射光栅的光子晶体结构包层形成偏振维持光纤芯部内的光沿着与垂直于光轴的平面限定的两个正交轴不同，或者沿着圆周方向分成四个分割部分的光子晶体结构包层，其中第一沿着一个方向彼此面对的一对分割部分的直径大于沿着与该一个方向正交的另一方向彼此面对的第二对分割部分中的格子孔的直径。

22. 发明授权

US06404966B1 Optical fiber 有权
标题翻译：光纤
公开(公告)号：US06404966B1
公开(公告)日：2002-06-11
申请号：US09306498
申请日：1999-05-06
申请人： Satoki Kawanishi , Katsunari Okamoto
发明人： Satoki Kawanishi , Katsunari Okamoto
IPC分类号： G02B602
CPC分类号： G02B6/02328 , C03B37/01205 , C03B2201/12 , C03B2201/28 , C03B2203/10 , C03B2203/16 , C03B2203/30 , C03B2203/42 , G02B6/02333 , G02B6/02347 , G02B6/105
摘要： An optical fiber including a core having an area of about several times an optical wavelength and composed of a hollow hole, and a cladding having a diffraction grating which is arranged at least in a peripheral area adjacent to the core and has a grating period equal to ½ the optical wavelength.
摘要翻译：一种光纤，包括具有大约几倍于光波长并由中空孔组成的芯的芯，以及具有衍射光栅的包层，该衍射光栅至少布置在与芯相邻的周边区域中，并且具有等于 1/2的光波长。

23. 发明申请

US20100266250A1 DISPERSION SHIFT OPTICAL FIBER 失效
标题翻译：分散移动光纤
公开(公告)号：US20100266250A1
公开(公告)日：2010-10-21
申请号：US10514530
申请日：2003-05-16
申请人： Kazunori Suzuki , Satoki Kawanishi , Hirokazu Kubota , Masatoshi Tanaka , Moriyuki Fujita
发明人： Kazunori Suzuki , Satoki Kawanishi , Hirokazu Kubota , Masatoshi Tanaka , Moriyuki Fujita
IPC分类号： G02B6/028 , G02B6/032
CPC分类号： G02B6/02338 , G02B6/02042 , G02B6/02242 , G02B6/02276 , G02B6/02347 , G02B6/02361 , G02B6/0281 , G02B6/03627 , G02B6/03644 , G02B6/03688
摘要： A 1.55 μm band dispersion shifted optical fiber is provided which has a low loss and low dispersion slope. A core region “a” is heavily doped with GeO2 . A core region “b” is composed of pure SiO2 glass. A cladding section is arranged around the core region. The cladding section has a lot of holes extending in the longitudinal direction of the optical fiber. The holes of the cladding section are not located at random, but have a honeycomb structure composed of regular hexagons which have a side length of Λ, and serve as a primitive lattice. The center of the core section has a region having a refractive index higher than that of the periphery of the core section. The core section has the refractive index distribution in which the group velocity dispersion at the operation wavelength of the region becomes the normal dispersion.
摘要翻译：提供1.55μm带隙色散位移光纤，具有低损耗和低色散斜率。核心区域“a”被GeO2重掺杂。核心区域“b”由纯SiO 2玻璃构成。围绕芯区域布置包层部分。包层部具有沿着光纤的长度方向延伸的大量孔。包层部分的孔不是随机的，而是具有由正方形六边形组成的蜂窝结构，其具有Λ的边长，并且用作原始晶格。芯部的中心具有折射率高于芯部的周边的区域。芯部具有折射率分布，其中该区域的工作波长处的群速度色散变为正常色散。

24. 发明授权

US06204944B1 All-optical time-division demultiplexing circuit and all-optical TDM-WDM conversion circuit 失效
标题翻译：全光时分解复用电路和全光TDM-WDM转换电路
公开(公告)号：US06204944B1
公开(公告)日：2001-03-20
申请号：US09115721
申请日：1998-07-15
申请人： Kentaro Uchiyama , Satoki Kawanishi , Masatoshi Saruwatari
发明人： Kentaro Uchiyama , Satoki Kawanishi , Masatoshi Saruwatari
IPC分类号： H04J1402
CPC分类号： H04J14/0223 , H04J14/08
摘要： An all-optical time-division demultiplexing circuit is designed to output all the channels of time-division multiplexed signal pulses to different output ports simultaneously. A pulse stream of time-division multiplexed signal pulses and linearly chirped control pulses synchronized with the signal channels are input into an optical Kerr medium. The optical Kerr medium provides locally cross-phase modulation to the control pulse, depending on the presence or absence of the signal pulses of each signal channel. And the optical Kerr medium modulates the power of the component frequencies &ugr;1, &ugr;2, . . . , &ugr;N of the control pulses in accordance with each of the signal channel, by inducing the optical frequency shift to compensate the control pulse chirp on the optical frequency axis. The Kerr medium outputs a power modulated control light, which is separated in a wavelength-division demultiplexing circuit into component frequencies &ugr;1, &ugr;2, . . . , &ugr;N of the control pulses which are to output to respective ports of corresponding to individual signal channels.
摘要翻译：全光时分解复用电路被设计成将时分复用的信号脉冲的所有信道同时输出到不同的输出端口。时分复用信号脉冲和与信号通道同步的线性啁啾控制脉冲的脉冲流被输入到光学克尔介质中。光学克尔介质根据每个信号通道的信号脉冲的存在或不存在向控制脉冲提供局部交叉相位调制。并且光学克尔介质调制分量频率的功率1和2。。。，根据每个信号通道的控制脉冲的N个，通过引起光频移补偿光轴上的控制脉冲啁啾。克尔介质输出功率调制控制光，其在波分解复用电路中被分离成分量频率“1”和“2”。。。，输出到相应于各个信号通道的相应端口的控制脉冲。

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