A simple integrated optical refractometric sensor based on hollow-core antiresonant ref lecting optical waveguides is proposed. The sensor uses the antiresonant ref lecting guidance mechanism and permits one to measure the refractive index of a liquid filling the core by simply monitoring the transmitted spectrum. The device has been made with standard silicon technology, and the experimental results confirm numerical simulations performed in one- and two-dimensional geometry. The sensor exhibits a linear response over a wide measurement range (1.3330–1.4450) and a resolution of 9 3 1024 and requires a small analyte volume.
Microfluidic sensor based on integrated optical hollow waveguides
ZENI, Luigi;
2004
Abstract
A simple integrated optical refractometric sensor based on hollow-core antiresonant ref lecting optical waveguides is proposed. The sensor uses the antiresonant ref lecting guidance mechanism and permits one to measure the refractive index of a liquid filling the core by simply monitoring the transmitted spectrum. The device has been made with standard silicon technology, and the experimental results confirm numerical simulations performed in one- and two-dimensional geometry. The sensor exhibits a linear response over a wide measurement range (1.3330–1.4450) and a resolution of 9 3 1024 and requires a small analyte volume.File in questo prodotto:
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