Patent ID: 7612887

Claim:
A micro resonator sensor comprising: a main waveguide provided with an incident hole for receiving an optical signal and an exit hole for outputting an optical signal, having an optical coupling region where a part of the optical signal inputted through the incident hole is split; a resonance waveguide having an optical coupling region optically connected to the optical coupling region of the main waveguide to receive the split optical signal split from the main waveguide, the resonance waveguide being configured of a plurality of optical waveguides arranged in a polygonal shape; and optical path changing means installed at apex regions contacting adjacent optical waveguides forming the resonance waveguide, for reflecting at least a part of the split optical signal inputted into the resonance waveguide to circulate the split optical signal inside the resonance waveguide, wherein openings are formed at one or more optical waveguides among optical waveguides configuring the resonance waveguide.