Preparation of Transparent Electrode Used for Liquid Crystal Optical Switch with Low Loss

Liquid crystal can be used as optical switch for optical communication. The loss of liquid crystal optical switch mainly depends on the transmittance of the transparent electrode. Indium Tin Oxide (ITO) has a high transmittance in visible band but a low transmittance in IR band. Based on determination of the complex refractive index of Indium Tin Oxide, some transparent electrodes with a high transmittance in the range of 1.5mm~1.6mm have been designed and prepared by use of the design thinking for inducing filters in optical coatings. The loss of the whole device is less than 0.4dB and its corresponding resistance is 350W/□.