Cavity-driven hybrid plasmonic ultra-narrow bandpass filter.
Opt Express
; 27(15): 20397-20411, 2019 Jul 22.
Article
en En
| MEDLINE
| ID: mdl-31510134
ABSTRACT
We propose a novel compound grating structure that exhibits a tunable ultra-narrowband transmission in the near infrared regime. The thin microstructure can realize a steep wave form through a Fano-like resonance by coupling different propagation-type SPP modes and with a narrow line width formed by the energy band gap. Additionally, the out-of-band suppression is remarkably enhanced. It effectively solves the constraint relationship between high transmittance, narrow line width, and weak side peak of the plasmonic filter, and the structure is suitable for integration with detectors in the near infrared regime.
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MEDLINE
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2019
Tipo del documento:
Article