Patent ID: 7391945
Filing Date: 2008-06-24
Classification: B82Y,G02B

Abstract:
1. A sensor device for detecting a substance contained in a fluid, said device comprising: a first photonic crystal region, a long wavelength edge of a photonic band gap of the first photonic crystal region is λ a second photonic crystal region having a different photonic band gap from the first photonic crystal region, a short wavelength edge of a photonic band gap of the second photonic crystal region is λ a first flow channel connected to the first photonic crystal region to allow a reference fluid to flow; a second flow channel connected to the second photonic crystal region to allow an objective substance-containing fluid to flow; an optical waveguide connected to the first photonic crystal region and the second photonic crystal region to guide the light; an optical source having the wavelength of the range from the λ an optical detector for detecting the light which has been transmitted through the first photonic crystal region and has reached the second photonic crystal region and has been transmitted through or reflected by the second photonic crystal region, wherein the substance is detected by utilizing both a state in which a condition of λ