2026-05-31T08:23:05Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/159072026-02-03T11:22:29Zcom_10630_2254col_10630_37953

Mid-infrared Suspended Waveguide Platform and Building Blocks Wanguemert-Pérez, Juan Gonzalo Sánchez-Postigo, Alejandro Soler-Penades, Jordi Ortega-Moñux, Alejandro Nedeljkovic, Milos Halir, Robert El Mokhtari Mimun, Faysal Cheng, Y.X. Qu, Z Khokhar, Ali Z. Osman, A. Cao, Wei Litteljohns, C.G. Cheben, Pavel Mashanovich, Goran Z. Molina-Fernández, Íñigo Óptica integrada In this work we present our recent progress in the development of a platform for the mid-infrared wavelength range, based on suspended silicon waveguide with subwavelength metamaterial cladding. The platform has some intrinsic advantages, which make it a very promising candidate for sensing applications in the fingerprint region. Specifically, it can cover the full transparency window of silicon (up to a wavelength of 8 μm), only requires one lithographic etch-step and can be designed for strong light-matter interaction. Design rules, practical aspects of the fabrication process and experimental results of a complete set of elemental building blocks operating at two very different wavelengths, 3.8 μm and 7.67 μm, will be discussed. Propagation losses as low as 0.82 dB/cm at λo=3.8 μm and 3.1 dB/cm at λo=7.67 μm are attained, for the interconnecting waveguides. 2018-06-05T06:42:48Z 2018-06-05T06:42:48Z 2018 2018-06-05 journal article https://hdl.handle.net/10630/15907 eng 20th European Conference on Integrated Ooptics Valencia 30 Mayo - 1 Junio 2018 open access