Xueyu Guan, Qingquan Liu, Qixiang Jia, Yi Zuo, Peiqi Yu, Zhifeng Li, Yongzhen Li, Ruonan Ji, Wei Lu, Shaowei Wang
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引用次数: 0
Abstract
Angular sensitivity to incident light and limited cut-off bandwidth have always been theoretical challenges and issues for interference-based narrow bandpass (NB) filters. In this paper, a coupling-induced transmission theory is proposed to solve the difficulties of traditional filters, which utilizes the coupling of resonators to allow light to pass through the metal efficiently. Based on the theory, a near-infrared bandpass filter insensitive to the incident angle is designed and demonstrated. It has almost consistent transmission peak and identical transmittance for incident light from 0° to 60° with a peak wavelength shift of only 7 nm, which is 25 times smaller than that of traditional Fabry–Perot NB filters. Additionally, the cut-off bandwidth can cover the whole band from visible to far infrared ranges, resolving the two crucial aforementioned problems, and presenting remarkable application value in the field of micro-nano optics.
期刊介绍：
Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.
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