RT Conference Proceedings
T1 Suspended silicon integrated platform for the long-wavelength mid-infrared band
A1 Sánchez-Postigo, Alejandro
A1 Wanguemert-Pérez, Juan Gonzalo
A1 Soler-Penades, Jordi
A1 Ortega-Moñux, Alejandro
A1 Nedeljkovic, Milos
A1 Halir, Robert
A1 El Mokhtari Mimun, Faysal
A1 Qu, Zhibo
A1 Khokhar, Ali Z.
A1 Osman, Ahmed
A1 Cao, Wei
A1 Littlejohns, Callum G.
A1 Mashanovich, Goran Z.
A1 Cheben, Pavel
A1 Molina-Fernández, Íñigo
K1 Redes ópticas
K1 Congresos y conferencias
AB 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.
YR 2019
FD 2019-07-18
LK https://hdl.handle.net/10630/18075
UL https://hdl.handle.net/10630/18075
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026