公开(公告)号：WO1996029625A1

公开(公告)日：1996-09-26

申请号：PCT/US1996002084

申请日：1996-02-14

Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  SMITH, Terry, L. ,  ATTANASIO, Daniel, V. ,  WATSON, James, E. ,  HARE, George, R.

IPC: G02F01/03

CPC classification number: G02F1/0123 ,  G02F1/3132 ,  G02F1/3136 ,  G02F1/3137

Abstract: A system for tuning an integrated optical switch element (100) utilizes a reflected portion (212) from a light signal (204) that is propagated into a first input port (106) defined on one side of an interaction region (110) of the optical switch element. The reflection occurs beyond an opposite side of the interaction region from the side on which the light signal is introduced. The reflected portion (212) is detected at a second input port (108) of the optical switch element (100) on the same side of the interaction region (110) as the side on which the light signals are introduced. The reflected portion (212) is used to tune the optical switch element (100) to a desired switch state by minimizing the reflection detected at the second input port (108). By minimizing the reflected portion (212) detected at the second input port (108) for a desired switch state, the strength of the optical signal (204) through the wave guide channels (206, 208) intended to be used to propagate the light signal in the desired switch state is maximized. As a result, the switching extinction ratio for the optical switch element (100) in the desired switch state is optimized. The system can be used to selectively tune a single optical switch element, or can be used to selectively tune multiple integrated optical switch elements that form an optical switch matrix on a common substrate, for example.

Abstract translation: 用于调谐集成光开关元件（100）的系统利用来自光信号（204）的反射部分（212），所述光信号被传播到限定在所述第一输入端口（110）的相互作用区域（110）的一侧上的第一输入端口 光开关元件。 反射发生在与从其引入光信号的一侧的相互作用区域的相反侧。 反射部分（212）在光开关元件（100）的与引入光信号的一侧的相互作用区域（110）的同一侧的第二输入端口（108）处被检测。 反射部分（212）用于通过使在第二输入端口（108）处检测到的反射最小化来将光学开关元件（100）调谐到期望的开关状态。 通过使在第二输入端口（108）检测到的反射部分（212）最小化所需的开关状态，通过用于传播光的波导通道（206,208）的光信号（204）的强度 期望开关状态下的信号最大化。 结果，优化了在所需开关状态下的光开关元件（100）的切换消光比。 该系统可以用于选择性地调谐单个光学开关元件，或者可以用于例如选择性地调谐在公共基板上形成光学开关矩阵的多个集成光学开关元件。