Patent ID: 7731902
Filing Date: 2010-06-08
Classification: G01N

Abstract:
1. A sensor device for detecting a substance contained in a fluid comprising: a first photonic crystal region; a second photonic crystal region; a first channel which is connected to the first photonic crystal region, and passes the fluid containing the substance therein; a second channel which is connected to the second photonic crystal region, and passes a fluid for reference therein; an optical waveguide which is connected to the first photonic crystal region and the second photonic crystal region, and guides light; and a detecting section for detecting a difference between a light which has passed through the optical waveguide and the first photonic crystal region and a light which has passed through the optical waveguide and the second photonic crystal region, wherein the optical waveguide includes a first optical waveguide and a second optical waveguide for guiding light respectively to the first photonic crystal region and the second photonic crystal region, and wherein the first optical waveguide has a phase-modulating element installed therein.