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提出带虚设层的抗反射导模共振滤波器结构及设计方法,该方法适用于任意角度入射带虚设层的抗反射结构导模共振滤波器设计与分析.得到带虚设层的导模共振滤波器抗反射结构所满足的关系式.指出在维持虚设层光学厚度不变的情况下,可以通过不同选材,在低反射旁带中实现等带宽不同波长的选择.此外,由于结构的抗反射特性在低角范围内具有较大的角度容差,改变入射角,可以实现滤波波长及光谱带宽在宽光谱范围内的准线性可调谐.
The structure and design method of anti-reflection guided-mode resonance filter with dummy layer are proposed. The method is suitable for the design and analysis of anti-reflection structure guided-mode resonance filter with dummy layer with arbitrary incident angle. The guided-mode resonance filter with dummy layer Anti-reflection structure satisfies the relations.It is pointed out that under the condition of keeping the optical thickness of the dummy layer constant, the selection of different wavelength with the same bandwidth can be realized in the low-reflection sideband through different materials.In addition, Low angle range with a larger angle tolerance, change the angle of incidence, you can achieve the filter wavelength and spectral bandwidth in a wide spectral range of the quasi-linear tunable.