2026-05-22T05:27:43Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/176202024-11-28T14:43:53Zcom_20.500.12105_15322com_20.500.12105_2051col_20.500.12105_16927

00925njm 22002777a 4500 dc Wangüemert-Pérez, J. Gonzalo author Hadij-ElHouati, Abdelfettah author Sánchez-Postigo, Alejandro author Leuermann, Jonas author Xu, Dan-Xia author Cheben, Pavel author Ortega-Moñux, Alejandro author Halir, Robert author Molina-Fernández, Íñigo author 2018-08-23 Silicon photonic biosensors hold the potential for highly accurate, yet low cost point-of-care devices. Maximizing the sensitivity of the sensing chips while reducing the complexity and cost of the read-out system is pivotal to realize this potential. Here we present an extensive analysis, both from a practical and a theoretical perspective, of current biosensors, and analyze how subwavelength structures can be exploited to enhance their sensitivity. This study is not restricted just to the near-infrared band as we also determine the sensing capabilities of the suspended silicon waveguides with subwavelength metamaterial cladding working in the mid-infrared range. These waveguides have been recently proposed to cover the full transparency window of silicon (λ < 8.5 μm), where the fingerprint spectral region of many molecules takes place and so a plethora of evanescent field absorption-based applications will be developed in the near future. 10.1016/j.optlastec.2018.07.071 0030-3992 Optics and Laser Technology http://hdl.handle.net/10668/3343 http://hdl.handle.net/20.500.12105/17620 Subwavelength waveguides Silicon photonics Biosensors Coherent multi-port sensing architecture (INVITED) Subwavelength structures for silicon photonics biosensing