Patent ID: 7526148
Filing Date: 2009-04-28
Classification: G01H

Abstract:
1. An acoustic sensor comprising: at least one photonic crystal structure having at least one optical resonance with a resonance frequency and a resonance lineshape, the at least one photonic crystal structure comprising a photonic crystal slab having a substantially planar configuration; an optical fiber optically coupled to the at least one photonic crystal structure, wherein light emitted from the optical fiber is incident to the at least one photonic crystal structure from a direction substantially perpendicular to the photonic crystal slab; and a housing substantially surrounding the at least one photonic crystal structure and mechanically coupled to the at least one photonic crystal structure such that acoustic waves incident upon the housing induce forces applied to the at least one photonic crystal structure that change at least one of the resonance frequency and the resonance lineshape of the at least one optical resonance of the at least one photonic crystal structure.