期刊:Journal of The Optical Society of America B-optical Physics [The Optical Society] 日期:2021-05-24卷期号:38 (6): 1951-1951被引量:2
标识
DOI:10.1364/josab.417755
摘要
In this paper, a novel multi-channel refractive index sensor is proposed. The strong coupling between Tamm plasmon polariton (TPP) and defect modes of one-dimensional photonic crystals (1D-PCs) is used to design a high sensitivity sensor. The TPP is formed by topological insulators Bi1.5Sb0.5Te1.8Se1.2 (BSTS) and 1D-PC. Within the 1D-PC, localized phase shifts are induced to form defect modes that can be hybridized with the TPP mode. More resonances can be formed by introducing additional defects in the 1D-PC. The proposed sensor provides great potential in the fields of multi-channel and multi-parameter sensing.