Abstract
In this paper, new structures for hybrid plasmonic Bragg reflectors (HPBRs), based on sinusoidal and triangular gratings, are proposed. The proposed structures exhibit better characteristics compared to previously studied rectangular HPBRs. Among these two structures, the triangular HPBR exhibits a better performance in terms of passband ripples and bandwidth than that of the sinusoidal one. Therefore, the structure of a microcavity as a defect in the proposed triangular HPBR is studied and its Q factor is compared with other types of plasmonic microcavities. It is also demonstrated that an apodization technique can reduce the size of the triangular HPBR-based microcavity and improve its Q factor.
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