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1. 发明授权

US6097518A N x M optical wavelength routing switch 失效
标题翻译： N×M光波长路由交换机
公开(公告)号：US6097518A
公开(公告)日：2000-08-01
申请号：US37937
申请日：1998-03-10
申请人： Kuang-Yi Wu , Jian-Yu Liu
发明人： Kuang-Yi Wu , Jian-Yu Liu
IPC分类号： G02F1/313 , G02B6/34 , G02F1/31 , H04B10/02 , H04J14/00 , H04J14/02 , H04Q3/52 , H04Q11/00
CPC分类号： G02B6/272 , G02B6/29302 , G02B6/29395 , G02F1/31 , H04Q11/0001 , H04Q11/0003 , H04Q11/0005 , H04J14/0212 , H04J14/0213 , H04J14/0219 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035
摘要： A switchable wavelength router switches wavelength division multiplexed (WDM) optical signals between N input ports and M output ports. Each WDM signal is spatially decomposed into N pairs of orthogonally polarized beams by a polarization-dependent routing element, such as a birefringent element. A polarization rotator array rotates the polarization of each beam pair so that both beams in each pair have the same polarization. A wavelength filter then demultiplexes each beam pair to create N sets of four beams, such that the first beam in each pair decomposes into third and fourth orthogonally-polarized beams, and the second beam in each pair decomposes into fifth and sixth orthogonally-polarized beams. The third and fifth beams carry a first spectral band at a first polarization, and the fourth and sixth beams carry a second complementary spectral band at an orthogonal polarization. A second polarization-dependent routing element spatially routes the four beams in each of the N sets based on their polarizations, and also spatially combines selected beam pairs from different sets to produce M pairs of beams. A second polarization rotator array restores each beam pair to orthogonal polarization, and a final polarization-dependent routing element recombines each beam pair to produce M output beams at the output ports.
摘要翻译：可切换波长路由器在N个输入端口和M个输出端口之间切换波分复用（WDM）光信号。每个WDM信号通过偏振相关的路由元件（例如双折射元件）被空间分解为N对正交偏振光束。偏振旋转器阵列旋转每个光束对的偏振，使得每对中的两个光束具有相同的偏振。波长滤波器然后对每个波束对进行解复用以产生N组四个波束，使得每对波束中的第一波束分解成第三和第四正交偏振光束，并且每对波束中的第二波束分解成第五和第六正交偏振光束。第三和第五波束在第一极化处携带第一光谱带，并且第四和第六波束在正交极化处携带第二互补光谱带。第二偏振相关路由元件基于它们的偏振空间地路由N组中的每一个中的四个波束，并且还将来自不同组的所选波束对空间组合以产生M对波束。第二偏振旋转器阵列将每个波束对恢复为正交偏振，并且最终的偏振相关路由元件将每个波束对重新组合以在输出端口处产生M个输出波束。

2. 发明授权

US5867291A Programmable wavelength router 失效
公开(公告)号：US5867291A
公开(公告)日：1999-02-02
申请号：US739424
申请日：1996-10-29
申请人： Kuang-Yi Wu , Jian-Yu Liu
发明人： Kuang-Yi Wu , Jian-Yu Liu
IPC分类号： G02B6/34 , G02F1/31 , H04B10/02 , H04B10/28 , H04J14/00 , H04J14/02 , H04J14/06 , H04Q11/00 , H04B10/00
CPC分类号： H04J14/0289 , G02B6/272 , G02B6/29302 , G02B6/29395 , G02F1/31 , H04J14/0209 , H04J14/0212 , H04Q11/0003 , H04Q11/0005 , G02B6/29386 , H04J14/0201 , H04J14/0291 , H04J14/06 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035
摘要： A programmable wavelength router having a plurality of cascaded stages where each stage receives one or more optical signals comprising a plurality of wavelength division multiplexed (WDM) channels. Each stage divides the received optical signals into divided optical signals comprising a subset of the channels and spatially positions the divided optical signals in response to a control signal applied to each stage. Preferably each stage divides a received WDM signal into two subsets that are either single channel or WDM signals. A final stage outputs optical signals at desired locations. In this manner, 2.sup.N optical signals in a WDM signal can be spatially separated and permuted using N control signals.

3. 发明授权

US6160665A High extinction ratio polarization beamsplitter 失效
标题翻译：高消光比偏振分光镜
公开(公告)号：US6160665A
公开(公告)日：2000-12-12
申请号：US326247
申请日：1999-06-04
申请人： Shifu Yuan
发明人： Shifu Yuan
IPC分类号： G02B27/28 , G02B27/14
CPC分类号： G02B27/283
摘要： A system, method and apparatus for performing optical beamsplitting are disclosed. In a preferred embodiment, a high extinction ratio polarization beamsplitter comprises at least two polarized beamsplitting surfaces that are aligned parallel to each other. The beamsplitter receives a first input light beam that is incident on a first polarized beamsplitting surface. The beamsplitter receives a second input light beam that is also incident on the first polarized beamsplitting surface. In a preferred embodiment, the first and second input light beams have a cross point that is not incident on such first polarized beamsplitting surface. Further, in a preferred embodiment, each of the first and second input light beams are incident on such first polarized beamsplitting surface at a point that is not its center point. Cross talk noise is reduced in a preferred embodiment by directing resulting noise to a point that is not co-linear with an output signal. Further, cross talk noise is reduced in a preferred embodiment by directing noise such that the noise incurs a polarized beamsplitting surface multiple times, each reducing the noise level.
摘要翻译：公开了一种用于执行光束分割的系统，方法和装置。在优选实施例中，高消光比偏振分束器包括彼此平行排列的至少两个偏振分束表面。分束器接收入射在第一偏振分束表面上的第一输入光束。分束器接收也入射在第一偏振分束表面上的第二输入光束。在优选实施例中，第一和第二输入光束具有不入射在这样的第一偏振分束表面上的交叉点。此外，在优选实施例中，第一和第二输入光束中的每一个在不是其中心点的点处入射在这样的第一偏振分束表面上。在优选实施例中，通过将结果噪声引导到与输出信号不是共线的点来减少串扰噪声。此外，在优选实施例中，通过引导噪声使得噪声多次引入极化的分束表面，每个降低噪声水平，从而减少串扰噪声。

4. 发明授权

US06118912A Apparatus for holding and tuning a thin-film optical assembly 失效
标题翻译：用于保持和调谐薄膜光学组件的装置
公开(公告)号：US06118912A
公开(公告)日：2000-09-12
申请号：US227064
申请日：1999-01-05
申请人： Jing-Yu Xu
发明人： Jing-Yu Xu
IPC分类号： G02B6/34 , G02B6/28
CPC分类号： G02B6/29367 , G02B6/29395
摘要： An apparatus for holding and tuning a thin film optical assembly is presented in which a housing receives a cylindrical thin film optical assembly which can be rotated to adjust the wavelength at which it passes or reflects an optical signal. The thin film optical assembly is composed of a thin film optical filter mounted on a cylindrical unit having a flat mounting face and an aperture for the transmission of light. The housing has a light path machined through it which permits light to pass to each thin film optical assembly, where one wavelength is separated by transmission and the remaining wavelengths are reflected to a subsequent filter. Each thin film optical assembly can be rotated within the housing to permit wavelength tuning. Once the thin film optical assembly is tuned it can be held in place using solder applied between the thin film optical assembly and the housing. Optical fibers are coupled to the housing using ferrules and graded rod index lenses. Each fiber optic assembly can be held in place by solder applied between the ferrule and the housing. The invention can also be used to separate polarizations using optical filters which angular polarization dependence.
摘要翻译：提出了一种用于保持和调谐薄膜光学组件的装置，其中壳体容纳可旋转的圆柱形薄膜光学组件，以调节其通过的波长或反射光信号。薄膜光学组件由安装在具有平坦安装面的圆柱形单元上的薄膜滤光器和用于透射光的孔组成。壳体具有通过其加工的光路，其允许光通过每个薄膜光学组件，其中一个波长通过透射分离，并且剩余的波长被反射到后续的滤光器。每个薄膜光学组件可以在壳体内旋转以允许波长调谐。一旦薄膜光学组件被调谐，就可以使用施加在薄膜光学组件和壳体之间的焊料将其保持就位。光纤使用套圈和分级棒索引透镜联接到外壳。每个光纤组件可以通过在套圈和壳体之间施加的焊料保持就位。本发明也可用于使用角度偏振依赖性的滤光器分离偏振。

5. 发明授权

US6166838A Optical add/drop wavelength switch 失效
公开(公告)号：US6166838A
公开(公告)日：2000-12-26
申请号：US36202
申请日：1998-03-06
申请人： Jian-Yu Liu , Kuang-Yi Wu
发明人： Jian-Yu Liu , Kuang-Yi Wu
IPC分类号： G02F1/31 , G02B6/293 , G02B6/34 , H04B10/02 , H04J14/00 , H04J14/02 , H04Q3/52 , H04Q11/00 , H04J14/06
CPC分类号： G02B6/29302 , G02B6/272 , G02B6/2766 , G02B6/29383 , H04J14/0212 , H04J14/06 , H04Q11/0005 , H04Q2011/0009 , H04Q2011/0016 , H04Q2011/0026 , H04Q2011/0035
摘要： An optical add/drop wavelength switch is controllably changed from a bridge state, in which output is identical to input, e.g. a Wavelength Division Multiplexed (WDM) input, and an add/drop state, In which a signal input to an add port is substituted for a particular wavelength subrange of the WDM input, other wavelengths of the WDM input being unchanged. In one embodiment, the wavelength subrange of the WDM signal is given a polarization different from other wavelengths of the WDM, such as by using a stacked waveplate or other optical filter or polarization discriminator. The differently-polarized wavelengths can the be spatially separated, e.g. by a birefringent element or a polarization beam splitter, preferably In a bit-controlled fashion, such as by using a liquid crystal or other polarization controller. Polarization controllers and discriminators can be used similarly to selectably align or combine the add signal with the portion of the WDM signal outside the subrange. The add/drop wavelength switch can be used, e.g. In an optical token ring network and/or to make-up an optical crossbar for exchanging any arbitrarily designatable channels, e.g. among a plurality of multi-channel optical fibers.

6. 发明授权

US06137606A Optical wavelength router 失效
标题翻译：光波长路由器
公开(公告)号：US06137606A
公开(公告)日：2000-10-24
申请号：US411935
申请日：1999-10-04
申请人： Kuang-Yi Wu , Jian-Yu Liu
发明人： Kuang-Yi Wu , Jian-Yu Liu
IPC分类号： G02B6/34 , G02F1/31 , H04B10/02 , H04B10/28 , H04J14/00 , H04J14/02 , H04J14/06 , H04Q11/00 , H04B14/02 , G02F1/03
CPC分类号： H04J14/0289 , G02B6/272 , G02B6/29302 , G02B6/29395 , G02F1/31 , H04J14/0209 , H04J14/0212 , H04Q11/0003 , H04Q11/0005 , G02B6/29386 , H04J14/0201 , H04J14/0291 , H04J14/06 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035
摘要： A programmable wavelength router having a plurality of cascaded stages where each stage receives one or more optical signals comprising a plurality of wavelength division multiplexed (WDM) channels. Each stage divides the received optical signals into divided optical signals comprising a subset of the channels and spatially positions the divided optical signals in response to a control signal applied to each stage. Preferably each stage divides a received WDM signal into two subsets that are either single channel or WDM signals. A final stage outputs optical signals at desired locations. In this manner, 2.sup.N optical signals in a WDM signal can be spatially separated and permuted using N control signals.
摘要翻译：一种具有多个级联级的可编程波长路由器，其中每个级接收包括多个波分复用（WDM）信道的一个或多个光信号。每个级将接收到的光信号划分成包括信道子集的分割光信号，并且响应于施加到每个级的控制信号对分割的光信号进行空间位置。每个级别优选地将接收的WDM信号划分为单个信道或WDM信号的两个子集。最终阶段在期望的位置输出光信号。以这种方式，WDM信号中的2N个光信号可以使用N个控制信号在空间上分离和置换。

7. 发明授权

US5963291A Optical attenuator using polarization modulation and a feedback controller 失效
标题翻译：使用偏振调制的光衰减器和反馈控制器
公开(公告)号：US5963291A
公开(公告)日：1999-10-05
申请号：US897353
申请日：1997-07-21
申请人： Kuang-Yi Wu , Jian-Yu Liu , Yen-Chen Chen
发明人： Kuang-Yi Wu , Jian-Yu Liu , Yen-Chen Chen
IPC分类号： G02F1/03 , G02F1/133 , G02F1/13363 , G02F1/1347 , G02F1/139 , G02F1/31 , G02F1/13 , G02B27/10
CPC分类号： G02F1/31 , G02F1/0311 , G02F1/0322 , G02F1/13318 , G02F1/13363 , G02F1/13471 , G02F1/1393 , G02F2203/48
摘要： An optical power regulator employs a variable optical attenuator having a first birefringent element that spatially separates the input optical beam into two orthogonally-polarized beams. Both beams pass through a polarization modulator (e.g., a liquid crystal material) that rotates their polarizations to an extent determined by the control voltage applied across the polarization modulator. A final birefringent element spatially separates both beams exiting the polarization modulator into two pairs of orthogonally-polarized beams (i.e., two horizontally-polarized and two vertically-polarized components). The thicknesses and optical properties of the birefringent elements are selected so that two of the four beams are combined by the final birefringent element to exit at the output port of the regulator, while the remaining two beams are blocked. As a result, the degree of attenuation is determined by the degree of polarization rotation by the polarization modulator, which in turn is a function of the control voltage applied to the polarization modulator. Preferably, the liquid crystal material used in the polarization modulator has a high optical birefringence and a low dielectric anisotropy, which results in a relatively shallow attenuation curve as a function of applied voltage. The intensity of the optical signal is measured by a photodetector and used by a controller to output the control voltage applied to the liquid crystal material to maintain a desired optical power level at the output port of the regulator.
摘要翻译：光功率调节器采用具有第一双折射元件的可变光衰减器，其将输入光束空间分离成两个正交偏振光束。两个光束通过偏振调制器（例如，液晶材料），其将它们的极化旋转到由施加在偏振调制器上的控制电压确定的程度。最终的双折射元件将离开偏振调制器的两个光束空间分离成两对正交偏振光束（即两个水平极化和两个垂直极化分量）。选择双折射元件的厚度和光学性质，使得四个光束中的两个由最终双折射元件组合以在调节器的输出端口处离开，而剩余的两个光束被阻挡。结果，衰减程度由偏振调制器的偏振旋转程度确定，偏振调制器又是施加到偏振调制器的控制电压的函数。优选地，在偏振调制器中使用的液晶材料具有高的光学双折射和低介电各向异性，这导致作为施加电压的函数的相对浅的衰减曲线。光信号的强度由光电检测器测量，并被控制器用来输出施加到液晶材料的控制电压，以便在调节器的输出端口处保持期望的光功率电平。

8. 发明授权

US6163393A Method and apparatus for wavelength multipexing/demultiplexing 失效
标题翻译：用于波长多路复用/解复用的方法和装置
公开(公告)号：US6163393A
公开(公告)日：2000-12-19
申请号：US274270
申请日：1999-03-22
申请人： Kuang-Yi Wu , Jian-Yu Liu
发明人： Kuang-Yi Wu , Jian-Yu Liu
IPC分类号： G02B6/34 , G02F1/31 , H04J14/02 , H04Q11/00 , H04J14/06
CPC分类号： G02B6/272 , G02B6/29302 , G02B6/29358 , G02B6/2938 , G02B6/29386 , G02B6/29394 , G02F1/31 , H04J14/02 , H04J14/06 , H04Q11/0003 , H04Q11/0005 , H04Q2011/0009 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035
摘要： A wavelength division multiplexing/demultiplexing device is presented utilizing a polarization-based filter to obtain a flat-top filter response which can be utilized to create a flat-top slicer which separates out odd and even wavelengths, or upper and lower channels of an input signal. The polarization-based filter provides superior peak flatness and isolation for narrow channel spacings over what can be obtained in traditional interferometric devices. The flat-top slicer can be used as the first stage of a cascade of WDM devices in which following stages can be based on polarization-based filters or traditional interferometric WDM devices, which are adequate due to the increased channel spacing obtained in the first stage of the cascade.
摘要翻译：使用基于偏振的滤波器来提供波分复用/解复用装置，以获得平顶滤波器响应，该平顶滤波器响应可用于创建平顶分选器，其分离出奇数和偶数波长或输入的上，下通道信号。基于偏振的滤波器提供了优异的峰值平坦度和隔离度，用于窄通道间隔超过传统干涉仪器可以获得的。平顶切片机可以用作级联的WDM装置的第一级，其中以下阶段可以基于基于偏振的滤波器或传统的干涉WDM装置，其由于在第一级中获得的增加的信道间隔而足够的级联。

9. 发明授权

US6141076A Spatial light modulators constructed from ferroelectric liquid crystal devices with twisted structure 失效
标题翻译：由具有扭曲结构的铁电液晶装置构成的空间光调制器
公开(公告)号：US6141076A
公开(公告)日：2000-10-31
申请号：US980447
申请日：1997-11-28
申请人： Jian-Yu Liu , Kuang-Yi Wu , Seng-Ieong Wong
发明人： Jian-Yu Liu , Kuang-Yi Wu , Seng-Ieong Wong
IPC分类号： G02F1/137 , C09K19/02 , G02F1/141 , G02F1/31
CPC分类号： C09K19/0225 , G02F1/141 , G02F1/31
摘要： A hybrid analog/binary electro-optic modulator using a twisted ferroelectric liquid crystal structure is provided. Ferroelectric liquid crystals with a tilt angle of between about 20.degree. and about 25.degree., preferably about 22.5.degree. are used. Rubbing directions for the two cell walls (relative to one another) can be varied from about 45.degree. to about 90.degree.. In one embodiment, a weak buffing force is used resulting in a relatively weak anchoring energy at the surface, aligning the liquid crystal molecules without locking the molecules into the buffing directions and a high pre-tilt structure for the molecules close to the surface boundaries. In one embodiment, strong buffing is used with buffing directions offset about 45.degree.. Use of this invention provides relatively fast response time, low required driving voltage, high contrast, and/or the ability to achieve both analog and binary operations.
摘要翻译：提供了使用扭转铁电液晶结构的混合模拟/二进制电光调制器。使用倾斜角为约20°至约25°，优选约22.5°的铁电液晶。两个细胞壁（相对于彼此）的摩擦方向可以在约45°至约90°之间变化。在一个实施例中，使用弱抛光力导致在表面处相对较弱的锚定能量，使液晶分子对准，而不将分子锁定到抛光方向，并且靠近表面边界的分子具有高预倾斜结构。在一个实施例中，使用强抛光，抛光方向偏移约45°。本发明的使用提供了相对快速的响应时间，低要求的驱动电压，高对比度和/或实现模拟和二进制操作的能力。

10. 发明授权

US6134358A N x N switch array with reduced components 失效
标题翻译： N x N开关阵列具有减少的组件
公开(公告)号：US6134358A
公开(公告)日：2000-10-17
申请号：US141396
申请日：1998-08-27
申请人： Kuang-Yi Wu , Jian-Yu Liu
发明人： Kuang-Yi Wu , Jian-Yu Liu
IPC分类号： G02B6/34 , G02B6/35 , G02F1/31 , H04Q11/00 , G02B6/26
CPC分类号： H04Q11/0005 , G02B6/272 , G02B6/2766 , G02B6/29395 , G02F1/31 , G02B6/3594 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0058 , H04Q2011/006
摘要： Switch arrays are provided with controllable polarization modifiers and polarization-dependent diverters, such as one or more polarization beam splitters, for configuring switch arrays which can reduce or eliminate the need for optical fibers in the switch arrays. In one embodiment, input positions configured in a first preferably planar (e.g., horizontal) configuration are routed to one or more of a corresponding plurality of output positions which are configured in a different arrangement such as in an orthogonal (e.g., vertical) planar arrangement. Preferably some or all of the polarization-related optical components, including components such as birefringent devices, liquid crystal polarization rotator arrays and/or polarization beam splitters are integrated so that one such device can be used in connection with a plurality of input and/or output beams.
摘要翻译：开关阵列设置有可控的偏振调节器和偏振相关的分流器，例如一个或多个偏振分束器，用于配置开关阵列，其可以减少或消除对开关阵列中的光纤的需要。在一个实施例中，以第一优选平面（例如，水平）配置配置的输入位置被路由到以不同布置配置的相应多个输出位置中的一个或多个，例如在正交（例如，垂直）平面布置。优选地，包括诸如双折射器件，液晶偏振旋转器阵列和/或偏振分束器的组件的偏振相关光学部件中的一些或全部是集成的，使得一个这样的器件可以结合多个输入和/或输出光束。

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