发明名称 SPECTRAL BAND-PASS FILTER HAVING HIGH SELECTIVITY AND CONTROLLED POLARIZATION
摘要 According to one aspect, the invention relates a spectral band-pass filter, which is optimized for the transmission of an incident wave at at least a first given central wavelength lambda0, and which includes: a metal grating having a thickness (t) greater than approximately lambda0/50 and including at least a first set of substantially identical, parallel slots having a width (W) less than around lambda0/10, and being spaced apart periodically or quasi-periodically according to a first period that is less than said first central el wavelength, a layer of dielectric material having a thickness (h) and a given refractive index (ng), which is coupled to the metal grating to form a waveguide for the waves diffracted by the grating, said first period of the grating being designed such that only orders 0 and ±1 of a wave having normal incidence and a wavelength lambda0 are diffracted in the layer of dielectric material, the assembly of the dielectric layer and grating being suspended, during use, in a fluid having a refractive index of close to 1.
申请公布号 US2013228687(A1) 申请公布日期 2013.09.05
申请号 US201113824807 申请日期 2011.09.15
申请人 VINCENT GREGORY;HAIDAR RIAD;COLLIN STEPHANE;PELOUARD JEAN-LUC;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS 发明人 VINCENT GREGORY;HAIDAR RIAD;COLLIN STEPHANE;PELOUARD JEAN-LUC
分类号 G02B5/20;G01J3/28 主分类号 G02B5/20
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