2026-05-31T08:23:06Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/336262026-02-03T11:36:24Zcom_10630_2254col_10630_37953

Sánchez-Postigo, Alejandro Wanguemert-Pérez, Juan Gonzalo Soler Penadés, Jordi Ortega-Moñux, Alejandro Nedeljkovic, Milos Halir, Robert El Mokhtari Mimum, Faysal Xu Cheng, Yolanda Qu, Zhibo Khokahr, Ali Z. Osman, Ahmed Cao, Wei Littlejohns, Callum G. Cheben, Pavel Mashanovich, Goran Z. Molina-Fernández, Íñigo 2024-09-27T09:23:24Z 2024-09-27T09:23:24Z 2019-04-01 Sánchez-Postigo, A., Wangüemert-Pérez, J.G., Soler Penadés, J., Ortega-Moñux, A., Nedeljkovic, M., Halir, R., El Mokhtari Mimun, F., Xu Cheng, Y., Qu, Z., Khokhar, A.Z., Osman, A., Cao, W., Littlejohns, C.G., Cheben, P., Mashanovich, G.Z. and Molina-Fernández, Í. (2019), Mid-infrared suspended waveguide platform and building blocks. IET Optoelectron., 13: 55-61. https://doi.org/10.1049/iet-opt.2018.5067 https://hdl.handle.net/10630/33626 10.1049/iet-opt.2018.5067 In this work, the authors present their recent progress in the development of a platform for the mid-infrared wavelength range, based on suspended silicon waveguides with subwavelength metamaterial cladding. The platform has some intrinsic advantages, which make it a very promising candidate for sensing applications in the molecular 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 and 7.7 μm, are discussed. Propagation losses as low as 0.82 dB/cm at λ0 = 3.8 μm and 3.1 dB/cm at λ0 = 7.7 μm are attained for the interconnecting waveguides. eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Óptica integrada Mid-infrared suspended waveguide platform and building blocks journal article