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1. 发明授权

US06721474B2 Fiber optic switch using galvanometer-driven x-y scanning 失效
标题翻译：光电开关采用电流计驱动的x-y扫描
公开(公告)号：US06721474B2
公开(公告)日：2004-04-13
申请号：US09812617
申请日：2001-03-19
申请人： Jianhua Wang , Zuyun Fang , Jian J. Chen
发明人： Jianhua Wang , Zuyun Fang , Jian J. Chen
IPC分类号： G02B635
CPC分类号： G02B6/352 , G02B6/32 , G02B6/3558 , G02B6/3572
摘要： A 1×N optical switch includes an input fiber collimator, an x-y scanning device including two perpendicular galvanometer-driven rotatable mirrors, and a 2-D array of output fiber collimators arranged over an output surface so as to be aligned with a corresponding ray extending from the x-y scanning device. Each of the output fiber collimators corresponds to a unique pair of rotation angles of the two mirrors. The output surface can have a spherical curvature, or a curvature which accounts for the dependency of optical path on the angles of the two mirrors. The switch allows improved switching speeds, accuracy, and reduced and uniform insertion losses. The architecture can be used for N×M switches and N×M cross-connects.
摘要翻译： 1xN光开关包括输入光纤准直器，包括两个垂直的检流计驱动的可旋转反射镜的xy扫描装置和布置在输出表面上的输出光纤准直器的2-D阵列，以便与从该 xy扫描装置。每个输出光纤准直仪对应于两个反射镜的独特的一对旋转角度。输出表面可以具有球形曲率或者考虑光路对两个反射镜的角度的依赖性的曲率。该开关允许改进的开关速度，精度和减少的和均匀的插入损耗。该架构可用于NxM交换机和NxM交叉连接。

2. 发明授权

US06904223B1 Tilted-translation variable optical attenuator 失效
标题翻译：倾斜变换光衰减器
公开(公告)号：US06904223B1
公开(公告)日：2005-06-07
申请号：US10408073
申请日：2003-04-04
申请人： Zuyun Fang , Jianhua Wang , Jian J. Chen
发明人： Zuyun Fang , Jianhua Wang , Jian J. Chen
IPC分类号： G02B6/00 , G02B6/26
CPC分类号： G02B6/266
摘要： In a preferred embodiment, a motorized variable optical attenuator comprises an input fiber collimator; an output fiber collimator disposed substantially along the first collimator; and a right-angle reflector movable relative to the input collimator and the output collimator along a translation direction forming a non-zero angle with a direction of a light beam emitted by the input collimator. The reflector comprises two mutually-perpendicular reflective surfaces for sequentially reflecting the light beam emitted by the input collimator to the output collimator. A variable attenuation imparted by the attenuator on the light beam is determined by a position of the reflector relative to the input collimator and the output collimator, along the translation direction. The reflector preferably comprises a right-angle prism adhered to a nut mounted on a threaded axle driven by a stepper motor. The attenuator can achieve stable, ripple-free attenuation characteristics at insertion losses beyond −40 dB.
摘要翻译：在优选实施例中，电动可变光衰减器包括输入光纤准直器; 基本上沿着所述第一准直仪设置的输出光纤准直器; 以及直角反射体，其相对于输入准直器和输出准直器沿着与由输入准直仪发射的光束的方向成非零角度的平移方向移动。反射器包括两个相互垂直的反射表面，用于将由输入准直仪发射的光束顺序反射到输出准直器。由衰减器在光束上赋予的可变衰减由反射器相对于输入准直仪和输出准直器沿平移方向的位置确定。反射器优选地包括附接到安装在由步进马达驱动的螺纹轴上的螺母的直角棱镜。衰减器可以在插入损耗超过-40 dB时实现稳定的无纹波衰减特性。

3. 发明授权

US06970615B1 Compact high-stability optical switches 失效
标题翻译：紧凑型高稳定性光开关
公开(公告)号：US06970615B1
公开(公告)日：2005-11-29
申请号：US10802126
申请日：2004-03-16
申请人： Zuyun Fang , Siyu Shen , Jianhua Wang
发明人： Zuyun Fang , Siyu Shen , Jianhua Wang
IPC分类号： G02B6/26 , G02B6/35
CPC分类号： G02B6/3524 , G02B6/3528 , G02B6/3546 , G02B6/355 , G02B6/356
摘要： In one embodiment, an optical switch includes: a first dual-fiber collimator comprising a first pair of optical fibers; a second fiber collimator comprising an output optical fiber; a switching prism movable between a first position and a second position, and a first mirror facing the first collimator. In the first position, the switching prism directs light from an input fiber of the first collimator into the output fiber of the second collimator. In the second position, the switching prism is positioned out of an optical path of light emitted from the input fiber of the first collimator. The first mirror is aligned to reflect light from the input fiber of the first collimator into an output fiber of the first collimator when the switching prism is in the second position. The second collimator may be a dual-fiber collimator, and a second mirror may be placed facing the second collimator.
摘要翻译：在一个实施例中，光开关包括：第一双光纤准直器，包括第一对光纤; 包括输出光纤的第二光纤准直器; 可在第一位置和第二位置之间移动的切换棱镜，以及面向第一准直仪的第一镜。在第一位置，开关棱镜将来自第一准直仪的输入光纤的光引导到第二准直仪的输出光纤中。在第二位置，切换棱镜位于从第一准直仪的输入光纤发射的光的光路之外。第一反射镜被对准以当切换棱镜处于第二位置时将来自第一准直仪的输入光纤的光反射到第一准直仪的输出光纤。第二准直器可以是双光纤准直器，并且第二反射镜可以面向第二准直器放置。

4. 发明授权

US07181102B1 Optical switching systems and methods 失效
标题翻译：光交换系统和方法
公开(公告)号：US07181102B1
公开(公告)日：2007-02-20
申请号：US10851553
申请日：2004-05-21
申请人： Zuyun Fang , Jianhua Wang
发明人： Zuyun Fang , Jianhua Wang
IPC分类号： G02B6/26
CPC分类号： G02B6/352 , G02B6/3514 , G02B6/3548 , G02B6/3572
摘要： In some embodiments, a 1×N optical switch includes: a plurality of co-planar, parallel output optical fiber collimators oriented to receive light substantially perpendicular to a longitudinal direction; and a plurality of switching units each corresponding to an output collimator. Each switching unit includes a rhomboid switching prism movable between a first position and a second position, and a fixed right-angle reflector facing the output collimator. When the switching prism is in the first position, the switching prism receives a longitudinal light beam and directs the light beam to the reflector for transmission to the output collimator. When the switching prism is in the second position, the switching prism is situated out of a path of the light beam. The described configurations may be optically reversed to yield N×1 switches.
摘要翻译：在一些实施例中，1xN光开关包括：多个共平面的并行输出光纤准直器，其被定向为接收基本上垂直于纵向方向的光; 以及多个开关单元，每个开关单元对应于输出准直器。每个开关单元包括可在第一位置和第二位置之间移动的菱形切换棱镜和面向输出准直器的固定直角反射器。当切换棱镜处于第一位置时，切换棱镜接收纵向光束并将光束引导到反射器以传输到输出准直器。当切换棱镜处于第二位置时，切换棱镜位于光束的路径之外。所描述的配置可以被光学地反转以产生N×1个开关。

5. 发明授权

US07058255B1 Wedge prism optical switches 失效
标题翻译：楔形棱镜光开关
公开(公告)号：US07058255B1
公开(公告)日：2006-06-06
申请号：US11087435
申请日：2005-03-23
申请人： Zuyun Fang
发明人： Zuyun Fang
IPC分类号： G02B6/35 , G02B6/34
CPC分类号： G02B6/3524 , G02B6/3528 , G02B6/3548
摘要： In some embodiments, an optical switch includes multiple individually-retractable wedge switching prisms stacked in a longitudinal channel, corresponding plural transverse-translation rhomboid prisms extending transversely away from the longitudinal channel, and corresponding plural fiber collimators oriented longitudinally and aligned along a transverse line on both sides of the longitudinal channel. To switch light to a selected fiber collimator, its corresponding wedge switching prism is inserted in the longitudinal channel to deflect light to a corresponding transverse-translation prism and on to the selected fiber collimator; the other switching prisms are retracted from the channel. In some embodiments, longitudinally-adjacent switching prisms are oriented in opposite directions. A reverse-deflection wedge prism can be provided between each switching prism and its corresponding transverse-translation prism. The described preferred systems allow improved system stability, as well as ease of manufacturing and alignment.
摘要翻译：在一些实施例中，光学开关包括堆叠在纵向通道中的多个可单独缩回的楔形切换棱镜，相应的多个横向平移菱形棱镜横向延伸远离纵向通道，并且相应的多个光纤准直器沿纵向方向定向并沿着横向线排列纵向通道两侧。为了将光切换到所选择的光纤准直仪，其对应的楔形切换棱镜插入纵向通道中以将光偏转到相应的横向平移棱镜并且到所选择的光纤准直器上; 其他开关棱镜从通道缩回。在一些实施例中，纵向相邻的开关棱镜以相反方向定向。可以在每个切换棱镜和其对应的横向平移棱镜之间设置反向偏转楔形棱镜。所描述的优选系统允许改进的系统稳定性以及易于制造和对准。

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