Arrow optical waveguides based sensors

This paper describes two novel integrated optic sensing applications based on antiresonant reflecting optical waveguide (ARROW) structures, for both direct and indirect liquid probing. Firstly, an evanescent-field refractometric sensor, based on a properly designed ARROW waveguide, will be proposed. Secondly, a new hollow optical waveguide based on antiresonant reflection, will be presented. The sensors have been designed, fabricated, and characterized, as it will be illustrated further.