低损耗液晶光开关器件用透明电极的制备  

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

作　　者：白胜元[1] 黄昱勇[1] 李海峰[1] 刘旭[1] 顾培夫[1] 唐晋发[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027

出　　处：《光电工程》2002年第1期26-29,共4页Opto-Electronic Engineering

摘　　要：液晶可以用来制作光通讯系统中的光开关,液晶器件的损耗主要取决于透明电极的透射率, ITO(氧化铟锡)在可见光范围具有高的透射率,但在红外损耗较大。在测定ITO复折射率的基础上,本文借鉴光学薄膜中诱导滤光片的设计思想,设计、制备出了在红外1.5mm^1.6mm范围内高透射率的透明电极,使整个器件的损耗<0.4dB,相应的方块电阻为350W/□。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 ITO, some transparent electrodes with a high transmittance in the range of 1.5 μm-1.6 μm 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 0.4 dB and its corresponding resistance is 350 Ω/.

关 键 词：光开关 光学薄膜 诱导滤光片 透明电极 液晶 

分 类 号：TN103[电子电信—物理电子学]