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Highly Sensitive Grating-Coupled Bloch Surface Wave Resonance Biosensor via Azimuthal Interrogation
Publié en 2016
A dielectric multilayer structure, with a grating profile on the surface layer, can couple light into a strongly confined surface wave, known as a Bloch surface wave. These surface modes can be used to design bio-sensors. The corrugated surface structure also enables azimuthal angular excitation of Bloch waves. In this paper, we exploit azimuthal interrogation to design highly sensitive Bloch surface wave bio-sensors. We present finite-element based numerical simulations to show enhanced refractive index sensitivity.
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