摘要
通过对双面金属包覆介质波导色散方程的微扰近似,得到当波导层为亚毫米量级时有N→0超高阶导模与偏振无关的特性.并定义了灵敏度,同时得到了灵敏度与有效折射率、厚度、波长和介电常数的关系,当有效折射率趋于零时,超高阶导模具有极高的灵敏度.
By applying the perturbation approximation method to the dispersion equation of Double Metal-cladding medium waveguide,the characteristics that the ultra-high order guided mode under N→0 is unrelated to its polarization can be obtained when the thickness of wave-guided layer is of the order of sub-millimeter.Then the sensitivity of waveguide was defined,and got its relationship with effective index,thickness,wavelength and dielectric constant.When the effective index approaches to zero,the ultrahigh-order modes will have a super high sensitivity.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2012年第1期83-85,共3页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家重点实验室开放课题基金项目(2011GZKF031107)
贵州省教育厅自然科学青年基金项目(黔教科2008098)
铜仁学院教改资金项目(院教改2008)
关键词
光波导
色散方程
有效折射率
灵敏度
optical waveguides； the dispersion equation； effective refractive index； sensitvity
