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    • 4. 发明授权
    • System for tuning an integrated optical switch element
    • 用于调谐集成光开关元件的系统
    • US5566263A
    • 1996-10-15
    • US408214
    • 1995-03-22
    • Terry L. SmithDaniel V. AttanasioJames E. WatsonGeorge R. Hare
    • Terry L. SmithDaniel V. AttanasioJames E. WatsonGeorge R. Hare
    • G02F1/313G02F1/01G02B6/35
    • G02F1/0123G02F1/3132G02F1/3136G02F1/3137
    • A system for tuning an integrated optical switch element utilizes a reflection from a light signal that is propagated into a first input port defined on one side of an interaction region 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 reflection is detected at a second input port of the optical switch element on the same side of the interaction region as the side on which the light signals is introduced. The reflection is used to tune the optical switch element to a desired switch state by minimizing the reflection detected at the second input port. By minimizing the reflection detected at the second input port for a desired switch state, the strength of the optical signal through the wave guide channels 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 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.
    • 用于调谐集成光开关元件的系统利用来自光信号的反射,该光信号被传播到限定在光开关元件的相互作用区域的一侧上的第一输入端口中。 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。 在光开关元件的与引入光信号的一侧的相互作用区域的相同侧的第二输入端处检测到反射。 反射用于通过最小化在第二输入端口处检测到的反射来将光学开关元件调谐到期望的开关状态。 通过将在第二输入端口检测到的反射最小化为期望的开关状态,通过旨在用于在期望的开关状态下传播光信号的波导通道的光信号的强度最大化。 结果,优化了所需开关状态下的光开关元件的切换消光比。 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。