Effects of chromophore concentration and film thickness on thermo-optic properties of electro-optic fluorinated polyimide films  

作　　者：宋洪祥 吴承训 

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 200051

出　　处：《Chinese Optics Letters》2007年第12期712-714,共3页中国光学快报（英文版）

摘　　要：Electro-optic （EO） effect and thermo-optic （TO） effect are jointly considered on the basis of field-induced and temperature-affected perturbations of the operating point in waveguide components. TO coefficients of EO fluorinated polyimide films with side-chain azobenzene chromophore were measured by attenuated- total-reflection （ATR） technique at different temperatures with TE- and TM-polarized lights, respectively. It is found that the absolute values of TO coefficients increase with the increments of both chromophore concentration and film thickness, but the polarization dependence of TO coefficients increases with the increment of chromophore concentration and decreases with the increment of film thickness.Electro-optic （EO） effect and thermo-optic （TO） effect are jointly considered on the basis of field-induced and temperature-affected perturbations of the operating point in waveguide components. TO coefficients of EO fluorinated polyimide films with side-chain azobenzene chromophore were measured by attenuated- total-reflection （ATR） technique at different temperatures with TE- and TM-polarized lights, respectively. It is found that the absolute values of TO coefficients increase with the increments of both chromophore concentration and film thickness, but the polarization dependence of TO coefficients increases with the increment of chromophore concentration and decreases with the increment of film thickness.

关 键 词：AZOBENZENE CHROMOPHORES Electrooptical effects Film thickness Light reflection Polyimides Polymer films Waveguide components 

分 类 号：O484[理学—固体物理]