Patent ID: 9200997
Filing Date: 2015-12-01
Classification: B82Y,G01N,G02B

Abstract:
1. A photonic sensing method for detection of analytes, said analytes being placed on a dielectric structure, periodic in a propagation direction of waves that are transmitted through said structure, and which features a photonic forbidden band for transmission, the method comprising: a) generating at least one broad band signal from an excitation source and through the periodic dielectric structure without an analyte, the signal being centered on an edge region of the photonic forbidden band, so that a fraction of a power of the excitation source remains within the photonic forbidden band, said broad band signal being maintained throughout the sensing method; b) directly measuring, without obtaining a frequency response from the periodic dielectric structure, an output power quantity that has not been filtered by the photonic forbidden band; c) placing the analyte on the periodic dielectric structure; d) directly measuring, without obtaining a frequency response, the output power quantity that has not been filtered by the photonic forbidden band; e) determining one or more properties of the analyte based on the variation in the output quantity that has not been filtered by the photonic forbidden band, with respect to the output quantity obtained before placing the analyte on the periodic dielectric structure.