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. 2007 Nov 1;32(21):3080-2.
doi: 10.1364/ol.32.003080.

Slot-waveguide biochemical sensor

Carlos A Barrios  1 , Kristinn B Gylfason, Benito Sánchez, Amadeu Griol, H Sohlström, M Holgado, R Casquel
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Slot-waveguide biochemical sensor

Carlos A Barrios et al. Opt Lett. .

Erratum in

  • Opt Lett. 2008 Nov 1;33(21):2554-5

Abstract

We report an experimental demonstration of an integrated biochemical sensor based on a slot-waveguide microring resonator. The microresonator is fabricated on a Si3N4-SiO2 platform and operates at a wavelength of 1.3 microm. The transmission spectrum of the sensor is measured with different ambient refractive indices ranging from n=1.33 to 1.42. A linear shift of the resonant wavelength with increasing ambient refractive index of 212 nm/refractive index units (RIU) is observed. The sensor detects a minimal refractive index variation of 2x10(-4) RIU.

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