Soref R A
Appl Opt. 1982 Apr 15;21(8):1386-93. doi: 10.1364/AO.21.001386.
A new fiber-optic switch for multimode fiber networks has been developed. This voltage-controlled device can switch light from any of four input fibers to any of four output fibers. Four input/output connections are made simultaneously, and the matrix has twenty-four such states. No moving parts are needed because the switching is accomplished with an electrooptic effect in nematic liquid crystals. Low levels of optical crosstalk, ~40 dB below the output signal level, are obtained with a unique two-stage architecture. The design, construction, and observed performance of this optical switch are described.
一种用于多模光纤网络的新型光纤开关已被开发出来。这种电压控制装置可以将来自四根输入光纤中任意一根的光切换到四根输出光纤中的任意一根。四个输入/输出连接同时进行，并且该矩阵有二十四种这样的状态。由于切换是通过向列型液晶中的电光效应来完成的，所以不需要移动部件。采用独特的两级架构可实现低水平的光串扰，比输出信号电平低约40 dB。本文描述了这种光开关的设计、构造和观察到的性能。
