Abstract
In this paper, a band-stop filter based on a surface plasmon polariton metal–insulator–metal is designed and studied. The relationship between wavelength and filter transmittance is simulated using the finite difference time domain method and coupled mode theory. Compared with a single-diamond resonator, the minimum transmittances of the double-diamond resonator and double-rectangular resonator at a fixed wavelength are increased by 11.33% and 14.25%, respectively, achieving an enhancement effect. The research results also show that the sensitivity of the filter can reach 860 nm/RIU. The structure has good application prospects in optical integration, optical communication, and optical information processing.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Qiaohua Wu, Yingqiu Zhang, Desheng Qu, and Chunlei Li
Appl. Opt. 61(25) 7409-7414 (2022)
Zhihao Guo, Guanmao Zhang, Litao Qiao, Panpan Ren, and Yaping Zhao
OSA Continuum 3(3) 609-619 (2020)
Hua Lu, Xueming Liu, Dong Mao, Leiran Wang, and Yongkang Gong
Opt. Express 18(17) 17922-17927 (2010)