| Issue |
EPJ Web Conf.
Volume 309, 2024
EOS Annual Meeting (EOSAM 2024)
|
|
|---|---|---|
| Article Number | 01009 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 1- Silicon Photonics and Integrated Optics | |
| DOI | https://doi.org/10.1051/epjconf/202430901009 | |
| Published online | 31 October 2024 | |
https://doi.org/10.1051/epjconf/202430901009
Novel high contrast grating hollow core waveguides for enhanced gas spectroscopy
1 Department of Electrical and Information Engineering, Politecnico di Bari, 70126, Bari, Italy
2 Centre for Advanced Photonics and Process Analysis, Munster Technological University, T12 T66T Cork, Ireland
3 Tyndall National Institute, T12 PX46 Cork, Ireland
* Corresponding author: ajmal.thottoli@poliba.it
Published online: 31 October 2024
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.
© The Authors, published by EDP Sciences, 2024
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