One-dimensional photonic crystal bandpass-filter-integrated metalens for gas sensing

Yujiang Wang; Xingping Zhou; Yuechun Shi; Xiangfei Chen

doi:10.1117/12.2672646

10 April 2023 One-dimensional photonic crystal bandpass-filter-integrated metalens for gas sensing

Yujiang Wang, Xingping Zhou, Yuechun Shi, Xiangfei Chen

Proceedings Volume 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022); 126141H (2023) https://doi.org/10.1117/12.2672646
Event: 14th International Photonics and Optoelectronics Meeting (POEM 2022), 2022, Wuhan, China

Abstract

We propose a design of a bandpass-filter-integrated metalens for the gas sensing. A device with both filtering and focusing functions is designed, by integrating a one-dimensional photonic crystal and a metalens. It has a great filtering effect for one absorption peak (1650 nm) of the target gas (the methane). The transmission rate of the target wavelength is 89% and the relative intensity of the light field is up to 135. Our device has the function of focusing the light onto the photodetector (PD). The response of PD has been greatly improved. Meanwhile, the device can be fabricated into a photonic integrated chip. We provide a new scheme of the photonic integration chip for the multiple gas sensing.

Citation Download Citation

Yujiang Wang, Xingping Zhou, Yuechun Shi, and Xiangfei Chen "One-dimensional photonic crystal bandpass-filter-integrated metalens for gas sensing", Proc. SPIE 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022), 126141H (10 April 2023); https://doi.org/10.1117/12.2672646

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