对称金属包覆波导受温度影响的特性分析  

Characteristic Analysis of the Symmetrical Metal-cladding Waveguide Affected by Temperature

作　　者：杜瑞[1] 袁文[1] 桑明煌[1] 戴海浪[1] 

机构地区：[1]江西师范大学物理与通信电子学院,南昌330027

出　　处：《光子学报》2014年第7期26-29,共4页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61265001;11264016);江西省教育厅科技项目(Nos.GJJ13237;GJJ12172)资助

摘　　要：基于对称金属包覆波导,研究了温度对金属层介电常量及导波层折射率的影响.通过改变金属介电常量和导波层折射率,共振角和衰减全反射吸收峰受到影响.理论和仿真表明:在入射光波长为760nm,覆盖层银膜厚度为35nm,衬底银膜厚度为300nm,导波层为纯水的条件下,温度由10℃升高到70℃时,衰减全反射吸收峰反射率随温度的升高而降低,吸收率提高;共振角随温度的升高,先增加后减小.当金属介电常量对整体的影响大于纯水时,共振角增加,反之,共振角减小.因此,对称金属包覆波导受温度的影响是不可忽略的.Based on symmetrical metal-cladding waveguide,the effect of temperature on permittivity of metal layer and refractive index of waveguide layer was studied.By changing the metal permittivity and refractive index of waveguide layer,resonance angle and attenuated total reflection absorption peak were affected.Theory and simulations show that as the temperature rises from 10℃to 70℃,attenuated total reflection absorption peak decreases and absorption rate improves with increased temperature;resonance angle increases and then decreases with increased temperature on the condition that the wavelength of incident light is 760nm,the thickness of silver film coverage and silver film substrate is 35nm and 300nm,the guiding layer is pure water.When the effect of metal permittivity on the overall is greater than pure water,the resonance angle increases.On the contrary,the resonance angle decreases.Therefore,the temperature effect on the symmetrical metal-cladding waveguide can not be ignored.

关 键 词：波导 温度 介电常量 折射率 共振角 

分 类 号：O436.2[机械工程—光学工程]