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1. 发明授权

US06353691B1 Method and system for splitting or combining optical signal 有权
标题翻译：光信号分离或组合的方法和系统
公开(公告)号：US06353691B1
公开(公告)日：2002-03-05
申请号：US09492966
申请日：2000-01-27
申请人： Wei Zhong Li , Yanfeng Yang
发明人： Wei Zhong Li , Yanfeng Yang
IPC分类号： G02B600
CPC分类号： G02B6/29302 , G02B6/2713 , G02B6/2773
摘要： A method and system for providing a splitter/combiner is disclosed. The splitter/combiner includes a first birefringent wedge having a first optic axis and a first wedge angle and a second birefringent wedge having a second optic axis and a second wedge angle. The second birefringent wedge is optically coupled with the first birefringent wedge. The second wedge angle is complementary to the first wedge angle. The second optic axis is perpendicular to the first optic axis such that an extraordinary signal for the first birefringent wedge is an ordinary signal for the second birefringent wedge. The first and second birefringent wedges establish a first path for a first portion of a first optical signal and establish a second path for a second portion of the first optical signal. The first path and the second path are separated by an angle. The first optical signal travels from the first birefringent wedge to the second birefringent wedge. The first birefringent wedge and the second birefringent wedge also combine a second optical signal travelling along the first path with a third optical signal travelling along the second path. The second optical signal and the third optical signal travel from the second birefringent wedge to the first birefringent wedge.
摘要翻译：公开了一种用于提供分路器/组合器的方法和系统。分路器/组合器包括具有第一光轴和第一楔形角的第一双折射楔和具有第二光轴和第二楔角的第二双折射楔。第二双折射楔与第一双折射楔光学耦合。第二楔形角度与第一楔形角度互补。第二光轴垂直于第一光轴，使得第一双折射楔的非常信号是用于第二双折射楔的普通信号。第一和第二双折射楔构成第一光信号的第一部分的第一路径，并为第一光信号的第二部分建立第二路径。第一路径和第二路径被分开一个角度。第一光信号从第一双折射楔移动到第二双折射楔。第一双折射楔和第二双折射楔还结合沿着第一路径行进的第二光信号和沿着第二路径行进的第三光信号。第二光信号和第三光信号从第二双折射楔移动到第一双折射楔。

2. 发明授权

US06272264B1 Multiple-channel optical filter 有权
标题翻译：多通道滤光片
公开(公告)号：US06272264B1
公开(公告)日：2001-08-07
申请号：US09348728
申请日：1999-07-06
申请人： Wei Zhong Li , Feng Liu , Wenhui Wang , Wei Luo
发明人： Wei Zhong Li , Feng Liu , Wenhui Wang , Wei Luo
IPC分类号： G02B626
CPC分类号： G02B6/2937 , G02B6/29395
摘要： A method and system for providing an optical filter is disclosed. The method and system include providing a first fiber for carrying a first optical signal and a second fiber for carrying a second optical signal. The first fiber has an end. The method and system also include providing a filter and a lens disposed between the filter and the end of the first fiber. The filter has a surface and is for filtering the first optical signal to provide the second optical signal. The lens has an axis and is for collimating the first optical signal. A normal to the surface of the filter is disposed at a first nonzero angle to the axis. The first optical signal has a first direction of propagation at the surface of the filter. The first direction of propagation is disposed at a second nonzero angle from the normal to the surface of the filter. The filter can be tuned by rotating the filter around the axis. Furthermore, additional fibers can be added to simultaneously filter multiple channels.
摘要翻译：公开了一种用于提供滤光器的方法和系统。该方法和系统包括提供用于承载第一光信号的第一光纤和用于承载第二光信号的第二光纤。第一根纤维结束了。该方法和系统还包括提供过滤器和布置在过滤器和第一纤维的端部之间的透镜。滤波器具有表面，并且用于对第一光信号进行滤波以提供第二光信号。透镜具有轴并用于准直第一光信号。过滤器表面的法线设置成与轴线成非零的第一角度。第一光信号在滤光器表面具有第一传播方向。传播的第一方向被布置在距过滤器表面的法线的第二非零角度。可以通过围绕轴旋转过滤器来调整过滤器。此外，可以添加额外的纤维以同时过滤多个通道。

3. 发明授权

US06192175B1 Method and system for providing a multi-channel optical filter 有权
标题翻译：用于提供多通道滤光器的方法和系统
公开(公告)号：US06192175B1
公开(公告)日：2001-02-20
申请号：US09223038
申请日：1998-12-30
申请人： Wei Zhong Li , Feng Liu , Wenhui Wang
发明人： Wei Zhong Li , Feng Liu , Wenhui Wang
IPC分类号： G02B626
CPC分类号： G02B6/2937
摘要： A system and method for filtering are disclosed. The system and method include providing first, second, third and fourth fibers for carrying a first, second, third, and fourth optical signals, respectively. The method and system also include providing a holder, a filter, and a first wedge assembly. The holder is for receiving the first fiber, the second fiber, the third fiber, and the fourth fiber therein. The filter is for filtering the first optical signal, the second optical signal, the third optical signal, and the fourth optical signal to provide a first filtered optical signal, a second filtered optical signal, a third filtered optical signal, and a fourth filtered optical signal. The first wedge assembly is disposed between the holder and the filter. The first wedge assembly is for directing the first optical signal towards the filter in a first path, for directing the second optical signal toward the filter in a second path, for directing the third optical signal towards the filter in a third path, and for directing the fourth optical signal toward the filter in a fourth path.
摘要翻译：公开了一种用于滤波的系统和方法。该系统和方法包括提供分别用于承载第一，第二，第三和第四光信号的第一，第二，第三和第四光纤。该方法和系统还包括提供保持器，过滤器和第一楔形组件。保持器用于在其中接收第一光纤，第二光纤，第三光纤和第四光纤。滤波器用于对第一光信号，第二光信号，第三光信号和第四光信号进行滤波，以提供第一滤波光信号，第二滤波光信号，第三滤波光信号和第四滤波光信号信号。第一楔形组件设置在保持器和过滤器之间。第一楔形组件用于在第一路径中将第一光信号引向滤光器，用于将第二光信号以第二路径引向滤光器，用于在第三路径中将第三光信号引向滤光器，并用于引导在第四路径中朝向滤波器的第四光信号。

4. 发明授权

US06178044B1 Method and system for providing an optical circulator 有权
标题翻译：提供光循环器的方法和系统
公开(公告)号：US06178044B1
公开(公告)日：2001-01-23
申请号：US09387206
申请日：1999-08-31
申请人： Wei Zhong Li , Yan Tang
发明人： Wei Zhong Li , Yan Tang
IPC分类号： G02B530
CPC分类号： G02B5/3083 , G02B6/2746 , G02F1/093 , Y10S359/90 , Y10S372/703
摘要： A method and system for providing an optical circulator is disclosed. The optical circulator includes a first port, a second port, a third port, and means for establishing a first optical path and a second optical path. The first optical path is from the first port to the second port. The second optical path is from the second port to the third port. The optical path establishing means also includes a wedge and a first birefringent material. The wedge intersects the second optical path but not the first optical path. The wedge is for ensuring that the second optical path includes the third port but not the first port. The wedge does so by deflecting an optical signal input from the second port, but not an optical signal from the first port. The first birefringent material intersects the first optical path and the second optical path and is disposed between the wedge and the second port along the second optical path. The first birefringent material is for ensuring that the second optical path includes the third port but not the first port and for ensuring that the first optical path includes the second port.
摘要翻译：公开了一种用于提供光循环器的方法和系统。光循环器包括第一端口，第二端口，第三端口以及用于建立第一光路和第二光路的装置。第一光路是从第一端口到第二端口。第二光路是从第二端口到第三端口。光路建立装置还包括楔形物和第一双折射材料。楔形物与第二光路相交，但不与第一光路相交。楔形件用于确保第二光路包括第三端口而不包括第一端口。楔形物通过偏转从第二端口输入的光信号而不是来自第一端口的光信号来实现。第一双折射材料与第一光路和第二光路相交，并沿第二光路设置在楔与第二端之间。第一双折射材料用于确保第二光路包括第三端口而不包括第一端口，并且用于确保第一光路包括第二端口。

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