公开(公告)号：US06631238B2

公开(公告)日：2003-10-07

申请号：US09810851

申请日：2001-03-16

申请人： Hongdu Liu ,  Daxin Liu ,  Shizhuo Yin ,  Lee Lisheng Huang

发明人： Hongdu Liu ,  Daxin Liu ,  Shizhuo Yin ,  Lee Lisheng Huang

IPC分类号： G02B2728

CPC分类号： G02F1/09 ,  G02B6/266 ,  G02B6/2746 ,  G02F2201/17 ,  G02F2203/48

摘要： Randomly polarized light impinges upon a birefringent crystal, is split into orthogonal polarization components and emerges from the crystal separated by a walk-off distance. The light beams then impinge on polarization rotators that cause a rotation of the plane of polarization by +45° and −45°. The light then encounters a variable polarization rotator in which the plane of polarization is rotated through a angle that varies in response to an externally-applied control signal. The maximum operating range (0 to 100% attenuation) is achieved when the variable rotator is capable of rotations in the range ±45°. A second birefringent crystal functions as a beam displacer. The beams encounter two wave plates configured to produce rotation angles of 0° and 90° followed by a retroreflector. The reverse traverse of the attenuator causes the light to emerge at an output port attenuated in intensity.

摘要翻译： 随机偏振光照射在双折射晶体上，被分裂为正交偏振分量，并从离开距离的晶体中出现。 光束然后撞击偏振旋转器，使偏振平面旋转+ 45°和-45°。 光然后遇到可变偏振旋转器，其中偏振平面旋转通过响应于外部施加的控制信号而变化的角度。 当可变转子能够在±45°的范围内旋转时，可实现最大工作范围（0至100％衰减）。 第二种双折射晶体用作光束置换器。 光束遇到两个波片，配置为产生0°和90°的旋转角度，然后是后向反射器。 衰减器的反向导通使光在强度衰减的输出端口处出现。

公开(公告)号：US06580546B2

公开(公告)日：2003-06-17

申请号：US09922545

申请日：2001-08-03

申请人： Hongdu Liu ,  Shizhuo Yin ,  Daxin Liu ,  Lee Lisheng Huang

发明人： Hongdu Liu ,  Shizhuo Yin ,  Daxin Liu ,  Lee Lisheng Huang

IPC分类号： G02F109

CPC分类号： G02F1/09

摘要： The present invention relates to the use of magnetic materials in combination with magneto-optic materials to improve performance of Faraday rotator devices by enhancing the latching capability and reducing the driving current. Semi-hard magnetic materials are advantageously used in connection with some embodiments of the present invention. Placing such semi-hard magnetic materials in proximity with the magneto-optic material enhances latching and reduces the drive current required to cause switching. Encompassing both the magneto-optic material and the semi-hard magnetic material further reduces drive current requirements and enhances latching by reducing leakage of the magnetic field from its generation within the coil to the magneto-optic material. Some embodiments further include soft or semi-hard material encompassing the coil.

摘要翻译： 本发明涉及磁性材料与磁光材料的组合，以通过增强锁定能力和降低驱动电流来改善法拉第旋转器件的性能。 半硬磁性材料有利地与本发明的一些实施方案结合使用。 将这种半硬磁材料放置在与磁光材料附近的位置，增强了锁定并降低了导致开关所需的驱动电流。 涵盖磁光材料和半硬磁材料进一步降低了驱动电流要求，并通过减少磁场从线圈内的产生到磁光材料的泄漏来增强闩锁。 一些实施例还包括包围线圈的软或半硬材料。

公开(公告)号：US06563985B2

公开(公告)日：2003-05-13

申请号：US09801100

申请日：2001-03-07

申请人： Shizhuo Yin ,  Paul Kurtz ,  Karl Reichard ,  Hongyu Liu ,  Qiming Zhang

发明人： Shizhuo Yin ,  Paul Kurtz ,  Karl Reichard ,  Hongyu Liu ,  Qiming Zhang

IPC分类号： G02B634

CPC分类号： G02F1/0115 ,  G02F1/0118 ,  G02F1/065 ,  G02F2201/307 ,  G02F2203/055

摘要： An optical filter that is tunable over a wide portion of the spectrum, such as the infrared portion. The filter has a core of silica fiber with a first cladding layer of silica fiber disposed thereon. A long period grating is disposed on the core. A second electro-optical cladding layer is disposed on the first cladding layer. The first cladding layer is ultra thin so as to support only a single resonant band over the spectral portion. The resonant band is tunable to different wavelengths in the spectral portion by a voltage applied to the second electro-optic layer. The electro-optic layer is a copolymer that has a refractive index less than that of the silica fiber material. The optical filter has fast tuning speed (nanosecond range), wide tuning range (>50 nm), low insertion loss (

摘要翻译： 可以在光谱的宽部分上调节的光学滤波器，例如红外部分。 所述过滤器具有二氧化硅纤维的芯，其上设置有设置在其上的二氧化硅纤维的第一包层。 在芯上设置长周期光栅。 在第一包层上设置第二电光覆层。 第一包层是超薄的，以便仅支持光谱部分上的单个共振带。 通过施加到第二电光层的电压，谐振频带可调谐到频谱部分中的不同波长。 电光层是折射率小于二氧化硅纤维材料的折射率的共聚物。 光滤波器具有快速调谐速度（纳秒范围），宽调谐范围（> 50nm），低插入损耗（<0.1dB），窄带宽（<0.5nm）和低旁瓣（<30dB）。

公开(公告)号：US09547163B2

公开(公告)日：2017-01-17

申请号：US14093188

申请日：2013-11-29

申请人： Zhiwen Liu ,  Chuan Yang ,  Kebin Shi ,  Mingda Zhou ,  Siyang Zheng ,  Shizhuo Yin

发明人： Zhiwen Liu ,  Chuan Yang ,  Kebin Shi ,  Mingda Zhou ,  Siyang Zheng ,  Shizhuo Yin

IPC分类号： G02B21/36 ,  G02B21/00

CPC分类号： G02B21/008 ,  G02B21/006

摘要： We present a method for parallel axial imaging, or z-microscopy, utilizing an array of tilted micro mirrors arranged along the axial direction. Image signals emitted from different axial positions can be orthogonally reflected by the corresponding micro mirrors and spatially separated for parallel detection, essentially converting the more challenging axial imaging to a lateral imaging problem. Each micro mirror also provides optical sectioning capability due to its finite dimension.

摘要翻译： 我们提出了一种用于平行轴向成像或z-显微镜的方法，利用沿轴向布置的倾斜微反射镜阵列。 从不同轴向位置发射的图像信号可以由相应的微镜正交反射，并在空间上分离用于并行检测，基本上将更具挑战性的轴向成像转换为侧向成像问题。 每个微镜由于其有限的尺寸而提供光学切割能力。

公开(公告)号：US20140146159A1

公开(公告)日：2014-05-29

申请号：US14093188

申请日：2013-11-29

申请人： Zhiwen Liu ,  Chuan Yang ,  Kebin Shi ,  Mingda Zhou ,  Siyang Zheng ,  Shizhuo Yin

发明人： Zhiwen Liu ,  Chuan Yang ,  Kebin Shi ,  Mingda Zhou ,  Siyang Zheng ,  Shizhuo Yin

IPC分类号： G02B21/36

CPC分类号： G02B21/008 ,  G02B21/006

摘要： We present a method for parallel axial imaging, or z-microscopy, utilizing an array of tilted micro mirrors arranged along the axial direction. Image signals emitted from different axial positions can be orthogonally reflected by the corresponding micro mirrors and spatially separated for parallel detection, essentially converting the more challenging axial imaging to a lateral imaging problem. Each micro mirror also provides optical sectioning capability due to its finite dimension.

摘要翻译： 我们提出了一种用于平行轴向成像或z-显微镜的方法，利用沿轴向布置的倾斜微反射镜阵列。 从不同轴向位置发射的图像信号可以由相应的微镜正交反射，并在空间上分离用于并行检测，基本上将更具挑战性的轴向成像转换为侧向成像问题。 每个微镜由于其有限的尺寸而提供光学切割能力。

公开(公告)号：US06493139B1

公开(公告)日：2002-12-10

申请号：US09811138

申请日：2001-03-16

申请人： Hongdu Liu ,  Daxin Liu ,  Shizhuo Yin ,  Lee Lisheng Huang

发明人： Hongdu Liu ,  Daxin Liu ,  Shizhuo Yin ,  Lee Lisheng Huang

IPC分类号： G02B2728

CPC分类号： G02F1/313 ,  G02B6/2746 ,  G02F1/09

摘要： The present invention relates to optical switches in which switching occurs by changing the rotation of the plane of polarization by application of an externally applied control signal, particularly to magneto-optical switches controlling the port by which light emerges from the switch by externally-applied magnetic fields. The switches of the present invention function for randomly polarized input light, producing similarly randomly polarized light at the appropriate output port. Specific embodiments relate to 1×2 and 1×4 switches in both single pass and dual pass embodiments. Single pass embodiments are switches in which light passes through the optical components in one direction emerging at the appropriate output port depending on the desired switching. Dual pass embodiments are switches in which the light makes a forward and reverse traverse of the switch with total reflection. Dual pass switches typically reduce crosstalk without increasing the size of the switch. Single pass embodiments using two Faraday rotators are also disclosed for reducing crosstalk.

摘要翻译： 本发明涉及通过施加外部施加的控制信号来改变偏振面的旋转而发生切换的光开关，特别是涉及通过外部施加的磁场控制光从开关出射的端口的磁光开关 领域。 本发明的开关用于随机偏振的输入光，在适当的输出端口产生类似的随机偏振光。 具体实施例涉及单通和双通道实施例中的1x2和1x4开关。 单通道实施例是其中光根据期望的切换在一个方向上穿过光学部件在适当的输出端口处出现的开关。 双通道实施例是这样的开关，其中光线使得开关具有全反射的正向和反向横越。 双通道开关通常可以在不增加开关尺寸的情况下降低串扰。 还公开了使用两个法拉第旋转器的单通道实施例以减少串扰。