公开(公告)号：US08064036B2

公开(公告)日：2011-11-22

申请号：US12433769

申请日：2009-04-30

Applicant: Xuefeng Yue ,  Christopher Lin ,  Ruipeng Sun ,  Ruibo Wang

Inventor： Xuefeng Yue ,  Christopher Lin ,  Ruipeng Sun ,  Ruibo Wang

IPC: G02B6/35 ,  G02F1/13

CPC classification number: G02F1/31 ,  G02B6/3524 ,  G02F1/1396 ,  G02F2203/06 ,  G02F2203/58

Abstract: An optical device has the structure to perform switching and attenuation of an optical beam with reduced polarization dependent loss (PDL). The optical device includes a birefringent displacer and two liquid crystal (LC) structures. The first LC structure is used to condition s-polarized components of the optical beam and the second LC structure is used to condition p-polarized components of the optical beam. Each LC structure has a separate control electrode so that the s-polarized components of the optical beam and the p-polarized components of the optical beam can be conditioned differently and in such a manner that reduces PDL. The optical device may be configured for processing multiple input light beams, such as the multiple wavelength channels de-multiplexed from a wavelength division multiplexed (WDM) optical signal.

Abstract translation: 光学器件具有以减小的偏振相关损耗（PDL）来执行光束的切换和衰减的结构。 光学器件包括双折射置换器和两个液晶（LC）结构。 第一个LC结构用于调节光束的s极化分量，第二个LC结构用于调节光束的p偏振分量。 每个LC结构具有单独的控制电极，使得光束的s偏振分量和光束的p偏振分量可以被不同地调节并且以减少PDL的方式进行调节。 光学装置可以被配置为处理多个输入光束，例如从波分复用（WDM）光信号解复用的多个波长信道。

公开(公告)号：US20100277658A1

公开(公告)日：2010-11-04

申请号：US12433769

申请日：2009-04-30

Applicant: Xuefeng YUE ,  Christopher LIN ,  Ruipeng SUN ,  Ruibo WANG

Inventor： Xuefeng YUE ,  Christopher LIN ,  Ruipeng SUN ,  Ruibo WANG

IPC: G02F1/13363

CPC classification number: G02F1/31 ,  G02B6/3524 ,  G02F1/1396 ,  G02F2203/06 ,  G02F2203/58

Abstract: An optical device has the structure to perform switching and attenuation of an optical beam with reduced polarization dependent loss (PDL). The optical device includes a birefringent displacer and two liquid crystal (LC) structures. The first LC structure is used to condition s-polarized components of the optical beam and the second LC structure is used to condition p-polarized components of the optical beam. Each LC structure has a separate control electrode so that the s-polarized components of the optical beam and the p-polarized components of the optical beam can be conditioned differently and in such a manner that reduces PDL. The optical device may be configured for processing multiple input light beams, such as the multiple wavelength channels de-multiplexed from a wavelength division multiplexed (WDM) optical signal.

Abstract translation: 光学器件具有以减小的偏振相关损耗（PDL）来执行光束的切换和衰减的结构。 光学器件包括双折射置换器和两个液晶（LC）结构。 第一个LC结构用于调节光束的s极化分量，第二个LC结构用于调节光束的p偏振分量。 每个LC结构具有单独的控制电极，使得光束的s偏振分量和光束的p偏振分量可以被不同地调节并且以减少PDL的方式进行调节。 光学装置可以被配置为处理多个输入光束，例如从波分复用（WDM）光信号解复用的多个波长信道。

公开(公告)号：US20100214527A1

公开(公告)日：2010-08-26

申请号：US12392800

申请日：2009-02-25

Applicant: Xuefeng Yue ,  Ruipeng Sun ,  Ruibo Wang

Inventor： Xuefeng Yue ,  Ruipeng Sun ,  Ruibo Wang

IPC: G02F1/13

CPC classification number: G02F1/31 ,  G02F2203/58

Abstract: An optical device performs both switching and attenuation of an optical beam, where the beam has an arbitrary combination of s-polarized and p-polarized components. The optical device includes a birefringent displacer, a liquid crystal (LC) beam-polarizing structure having six subpixels organized in a first polarization group and a second polarization group, a half-wave plate positioned for polarization control of the second polarization group, and a polarization separating and rotating assembly. The structure of the LC beam-polarizing structure allows for 1×2 switching and attenuation control with a single control signal. The optical device may be configured for processing multiple input light beams, such as the multiple wavelength channels de-multiplexed from a wavelength division multiplexed (WDM) optical signal.

Abstract translation: 光学装置执行光束的切换和衰减，其中光束具有s偏振和p偏振分量的任意组合。 光学装置包括双折射置换器，具有组合在第一偏振组和第二偏振组中的六个子像素的液晶（LC）光束偏振结构，用于第二偏振组的偏振控制的半波片，以及 偏振分离和旋转组件。 LC光束偏振结构的结构允许通过单个控制信号进行1×2的开关和衰减控制。 光学装置可以被配置为处理多个输入光束，例如从波分复用（WDM）光信号解复用的多个波长信道。

公开(公告)号：US08441586B2

公开(公告)日：2013-05-14

申请号：US13416030

申请日：2012-03-09

Applicant: Xuefeng Yue ,  Ruibo Wang

Inventor： Xuefeng Yue ,  Ruibo Wang

IPC: G02F1/1335

CPC classification number: G02F1/31 ,  G02F1/13363 ,  G02F2201/17 ,  G02F2203/05

Abstract: An LC-based optical device compensates for differences in optical path lengths of polarization components of input beam. As a result, PDL and PMD of the optical device are reduced. The compensation mechanism may be a glass plate that is disposed in an optical path of a polarization component so that the optical path length of that polarization component can be made substantially equal to the optical path length of the other polarization component that traverses through a half-wave plate. Another compensation mechanism is a birefringent displacer that has two sections sandwiching a half-wave plate, wherein the two sections are of different widths and the planar front surface of the birefringent displacer can be positioned to be non-orthogonal with respect to the incident input light beam.

Abstract translation: 基于LC的光学器件补偿输入光束的偏振分量的光程长度的差异。 结果，减少了光学装置的PDL和PMD。 补偿机构可以是设置在偏振分量的光路中的玻璃板，使得可以使该偏振分量的光程长度基本上等于穿过半波长分量的另一偏振分量的光程长度， 波片。 另一种补偿机制是双折射置换器，其具有夹住半波片的两个部分，其中两个部分具有不同的宽度，并且双折射置换器的平面前表面可以相对于入射的输入光线定位成非正交的 光束。