公开(公告)号：US20220357630A1

公开(公告)日：2022-11-10

申请号：US17847712

申请日：2022-06-23

Applicant: II-VI Delaware, Inc.

Inventor： Qingyu Li ,  Jack R. Kelly ,  Guomin Jiang ,  Haiji J. Yuan ,  Yimin Ji ,  Helen Chen

IPC: G02F1/29

Abstract: A voltage-controlled optical wedge is formed by creating an adjustable voltage gradient along the length of a relatively large-sized LC cell. A pair of bias voltages (AC voltages) are applied at the opposing side terminations of the LC cell, their RMS values selected to create a continuous phase variation along the length of the cell, where a defined phase variation is associated with a specific beam steering angle. Adjustments in the applied bias voltages (specifically, changes in the RMS values of the bias voltages) result in changing the beam steering angle, providing for active, controllable beam steering as a function of time. The LC cell may be configured to provide either a linear or nonlinear continuous phase variation, as preferred for different beam steering applications.

公开(公告)号：US11422429B1

公开(公告)日：2022-08-23

申请号：US17236009

申请日：2021-04-21

Applicant: II-VI Delaware, Inc.

Inventor： Qingyu Li ,  Jack R. Kelly ,  Guomin Jiang ,  Haiji J. Yuan ,  Yimin Ji ,  Helen Chen

IPC: G02F1/29 ,  G01S7/481

Abstract: A voltage-controlled optical wedge is formed by creating an adjustable voltage gradient along the length of a relatively large-sized LC cell. A pair of bias voltages (AC voltages) are applied at the opposing side terminations of the LC cell, their RMS values selected to create a continuous phase variation along the length of the cell, where a defined phase variation is associated with a specific beam steering angle. Adjustments in the applied bias voltages (specifically, changes in the RMS values of the bias voltages) result in changing the beam steering angle, providing for active, controllable beam steering as a function of time. The LC cell may be configured to provide either a linear or nonlinear continuous phase variation, as preferred for different beam steering applications.

公开(公告)号：US11789331B2

公开(公告)日：2023-10-17

申请号：US17847712

申请日：2022-06-23

Applicant: II-VI Delaware, Inc.

Inventor： Qingyu Li ,  Jack R. Kelly ,  Guomin Jiang ,  Haiji J. Yuan ,  Yimin Ji ,  Helen Chen

IPC: G02F1/29 ,  G01S7/481

CPC classification number: G02F1/29 ,  G01S7/4817

Abstract: A voltage-controlled optical wedge is formed by creating an adjustable voltage gradient along the length of a relatively large-sized LC cell. A pair of bias voltages (AC voltages) are applied at the opposing side terminations of the LC cell, their RMS values selected to create a continuous phase variation along the length of the cell, where a defined phase variation is associated with a specific beam steering angle. Adjustments in the applied bias voltages (specifically, changes in the RMS values of the bias voltages) result in changing the beam steering angle, providing for active, controllable beam steering as a function of time. The LC cell may be configured to provide either a linear or nonlinear continuous phase variation, as preferred for different beam steering applications.

公开(公告)号：US11906823B2

公开(公告)日：2024-02-20

申请号：US17235168

申请日：2021-04-20

Applicant: II-VI Delaware, Inc.

Inventor： Guomin Jiang ,  Helen Chen ,  Haiji J. Yuan ,  Lixin Wang ,  WenYi Cao ,  Xuewen Lu ,  Qingyu Li ,  Yimin Ji

IPC: G02F1/01 ,  G02F1/133

CPC classification number: G02F1/0136 ,  G02F1/13306 ,  G02F2201/18 ,  G02F2203/055

Abstract: A reconfigurable polarization rotator is formed of an array of very small liquid crystal (LC) cells (e.g., cells of less than 10 μm in width, termed “microcells”), referred to hereinafter as “microcells”. Each LC microcell is addressable by a separate electrical voltage input that independently controls the polarization rotation performed by the associated LC microcell. By defining a set of adjacent microcells to be held at the same voltage level, that group may be used to form a polarization rotator window of a proper size for a first fiber array configuration. When a fiber array of a different configuration (say, an array with twice the pitch) is used, a different-sized group of adjacent LC microcells is held at a common voltage level so as to form a reconfigured “window” of a new dimension.

公开(公告)号：US20220334416A1

公开(公告)日：2022-10-20

申请号：US17235168

申请日：2021-04-20

Applicant: II-VI Delaware, Inc.

Inventor： Guomin Jiang ,  Helen Chen ,  Haiji J. Yuan ,  Lixin Wang ,  WenYi Cao ,  Xuewen Lu ,  Qingyu Li ,  Yimin Ji

IPC: G02F1/01 ,  G02F1/133

Abstract: A reconfigurable polarization rotator is formed of an array of very small liquid crystal (LC) cells (e.g., cells of less than 10 μm in width, termed “microcells”), referred to hereinafter as “microcells”. Each LC microcell is addressable by a separate electrical voltage input that independently controls the polarization rotation performed by the associated LC microcell. By defining a set of adjacent microcells to be held at the same voltage level, that group may be used to form a polarization rotator window of a proper size for a first fiber array configuration. When a fiber array of a different configuration (say, an array with twice the pitch) is used, a different-sized group of adjacent LC microcells is held at a common voltage level so as to form a reconfigured “window” of a new dimension.