Soref R A
Opt Lett. 1981 Jun 1;6(6):275-7. doi: 10.1364/ol.6.000275.
An electro-optical 2 x 2 switch for fiber-optic applications has been developed. Optical cross talk is reduced significantly by inserting two 2 x 1 switches in each optical path. A compact structure is used to contain the four 2 x 1's that are required. We observed -27-dB cross talk and 2.5-dB insertion loss in both switching states. The device is controlled by a 5-V twisted-nematic liquid-crystal cell. Multimode, unpolarized light is switched.
已开发出一种用于光纤应用的电光2×2开关。通过在每条光路中插入两个2×1开关，显著降低了光串扰。采用紧凑结构来容纳所需的四个2×1开关。在两种开关状态下，我们观测到串扰为-27dB，插入损耗为2.5dB。该器件由一个5V扭曲向列型液晶盒控制。多模非偏振光可被切换。
