2026-05-29T23:46:09Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/180752026-02-03T12:24:52Zcom_10630_2254col_10630_37959
Suspended silicon integrated platform for the long-wavelength mid-infrared band
Sánchez-Postigo, Alejandro
Wanguemert-Pérez, Juan Gonzalo
Soler-Penades, Jordi
Ortega-Moñux, Alejandro
Nedeljkovic, Milos
Halir, Robert
El Mokhtari Mimun, Faysal
Qu, Zhibo
Khokhar, Ali Z.
Osman, Ahmed
Cao, Wei
Littlejohns, Callum G.
Mashanovich, Goran Z.
Cheben, Pavel
Molina-Fernández, Íñigo
Redes ópticas
Congresos y conferencias
The atmospheric-transmission window and the fingerprint region of many substances overlaps with the long-wave infrared band. This has enabled the emergence of a new path for photonic integrated circuits, which could exploit the potential applications of this wavelength range, including chemical and bio sensing. In this work we review our latest advances in the suspended silicon platform with subwavelength grating lateral cladding at 7.7-µm wavelength. Suspended waveguides only require one lithographic etch step and can be specifically designed to maximize sensitivity when used as sensors. Waveguides with propagation loss of 3.1±0.3 dB/cm are demonstrated, as well as bends with less than 0.1 dB/bend. Suspended waveguides based on shifted Bragg grating lateral cladding are also reported, with propagation loss of 5.1±0.6 dB/cm. These results prepare the ground for the development of a platform capable of covering the entire mid-infrared band.
Keywords: suspended silicon, mid-infrared, long-wave infrared, subwavelength grating, Bragg.
2019-07-18T10:04:17Z
2019-07-18T10:04:17Z
2019-07-18T10:04:17Z
2019-07-18
conference output
https://hdl.handle.net/10630/18075
eng
21st International Conference on Transparent Optical Networks, ICTON 2019
Angers (Francia)
Julio 2019
http://creativecommons.org/licenses/by-nc-nd/4.0/
open access
Attribution-NonCommercial-NoDerivatives 4.0 Internacional