Angular-adjustable single-channel narrow-band filter based on one-dimensional photonic crystal heterostructure
| Autor: | Xiao-Hong Tang, U-Fat Chio, Fang Wang, Xiao-Ying Song, Wei Wang |
|---|---|
| Přispěvatelé: | School of Electrical and Electronic Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry Physics QC1-999 Physics::Optics General Physics and Astronomy Oblique case Reflector (antenna) Heterojunction Wavelength Optics Transmission (telecommunications) Filter (video) Photonic Crystals Electrical and electronic engineering [Engineering] Defects business Passband Photonic crystal |
| Zdroj: | AIP Advances, Vol 11, Iss 9, Pp 095013-095013-7 (2021) |
| Popis: | In this work, we designed a narrow-band filter based on a one-dimensional photonic crystal heterostructure featuring an angle-adjustable single-channel. The design presented here is based on a quarter-wave reflector with a mirror defect layer in the middle of the structure. By combining two defective one-dimensional photonic crystals (PCs), we obtained a heterostructure in which the two sub-PCs had the wavelengths of their defect modes, that is, the same at one incident angle and different at all other incident angles. This structure possessed the single-channel resonant peak in the transmission spectrum under either a normal or an oblique incident angle, and the angle-adjustability was related to the two modifying parameters. The filter based on this heterostructure possessed not only a narrow passband but also a sharp angular pass breadth. These properties have potential applications in angular tunable, single-channel narrow-band filters. Published version This work was supported by the Chongqing Science and Technology Commission (Grant Nos. KJQN201800628 and KJ202100664504164), and the China postdoctoral Science Foundation funded the 69th batch of surface project (Grant No. 2021M693768). |
| Databáze: | OpenAIRE |
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