Optical Gas Sensor Using Subwavelength Grating-Based Loop-Terminated Mach-Zender Interferometer
Author's Department
Physics Department
Second Author's Department
Physics Department
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https://doi.org/10.1117/12.3042916
Document Type
Research Article
Publication Title
Proceedings of SPIE the International Society for Optical Engineering
Publication Date
1-1-2025
doi
10.1117/12.3042916
Abstract
Recently, Subwavelength gratings (SWG) have received a lot of attention in evanescent field sensing applications, since it offers a high overlap of more than 50% between the optical guided mode and the cladding material (sensing medium), this overlap can be increased by decreasing the duty cycle of the SWG waveguide leading to a much higher waveguide sensitivity. In this paper, an optical gas sensor is proposed based on the emerging subwavelength grating technology in silicon-on-insulator platform operating in the near-infrared (NIR) region around the 1550 nm wavelength.
Recommended Citation
APA Citation
Nasser, A.
&
Swillam, M.
(2025). Optical Gas Sensor Using Subwavelength Grating-Based Loop-Terminated Mach-Zender Interferometer. Proceedings of SPIE the International Society for Optical Engineering, 13370,
https://doi.org/10.1117/12.3042916
MLA Citation
Nasser, Abdelrahman, et al.
"Optical Gas Sensor Using Subwavelength Grating-Based Loop-Terminated Mach-Zender Interferometer." Proceedings of SPIE the International Society for Optical Engineering, vol. 13370, 2025
https://doi.org/10.1117/12.3042916