Novel high contrast grating hollow core waveguides for enhanced gas spectroscopy

Autor: Thottoli Ajmal, Devarapu Ganga Chinna Rao, D’Orazio Antonella, Magno Giovanni, O’Faolain Liam
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: EPJ Web of Conferences, Vol 309, p 01009 (2024)
Druh dokumentu: article
ISSN: 2100-014X
DOI: 10.1051/epjconf/202430901009
Popis: The article presents an innovative approach to confining waves in planar high contrast grating hollow core waveguides, design achieves a surface that reflects waves effectively while maintaining a structure that allows for high transmission. The unique side-open waveguide system also allows for gas flow through the sidewalls, making it suitable for gas spectroscopic techniques. The HCW design is specifically tailored for methane gas sensing at a wavelength of 3.27 μm. Numerical analysis shows that the transmittance can reach up to -0.41 dB. These findings demonstrate the potential of high-transmitting hollow-core waveguides for gas sensing, highlighting the effectiveness and cost-efficiency of chip-scale photonic integration.
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