%0 Journal Article
%A Wangüemert-Pérez, J. Gonzalo
%A Hadij-ElHouati, Abdelfettah
%A Sánchez-Postigo, Alejandro
%A Leuermann, Jonas
%A Xu, Dan-Xia
%A Cheben, Pavel
%A Ortega-Moñux, Alejandro
%A Halir, Robert
%A Molina-Fernández, Íñigo
%T [INVITED] Subwavelength structures for silicon photonics biosensing
%D 2018
%@ 0030-3992
%U http://hdl.handle.net/10668/3343
%X 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.
%K Subwavelength waveguides
%K Silicon photonics
%K Biosensors
%K Coherent multi-port sensing architecture
%~