RT Journal Article
T1 [INVITED] Subwavelength structures for silicon photonics biosensing
A1 Wangüemert-Pérez, J. Gonzalo
A1 Hadij-ElHouati, Abdelfettah
A1 Sánchez-Postigo, Alejandro
A1 Leuermann, Jonas
A1 Xu, Dan-Xia
A1 Cheben, Pavel
A1 Ortega-Moñux, Alejandro
A1 Halir, Robert
A1 Molina-Fernández, Íñigo
K1 Subwavelength waveguides
K1 Silicon photonics
K1 Biosensors
K1 Coherent multi-port sensing architecture
AB 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.
PB Elsevier Ltd.
SN 0030-3992
YR 2018
FD 2018-08-23
LK http://hdl.handle.net/10668/3343
UL http://hdl.handle.net/10668/3343
LA en
NO Wangüemert-Pérez JG, Hadij-ElHouati A, Sánchez-Postigo A, Leuermann J, Xu D-X, Cheben P, et al. [INVITED] Subwavelength structures for silicon photonics biosensing. Optics & Laser Technology. 2019;109:437–448.
DS RISalud
RD Apr 13, 2025