Title :
Integrated optics ring-resonator chemical sensor with polymer transduction layer
Author :
Ksendzov, A. ; Homer, M.L. ; Manfreda, A.M.
Author_Institution :
Jet Propulsion Lab., Pasadena, CA, USA
Abstract :
An integrated optics chemical sensor based on a ring resonator with an ethyl cellulose polymer coating has been demonstrated. The measured sensitivity to isopropanol in air is 50 ppm-the level immediately useful for health-related air quality monitoring. The resonator was fabricated using SiO2 and SixNy materials. The signal readout is based on tracking the wavelength of a resonance peak. The resonator layout optimisation for sensing applications is discussed.
Keywords :
air pollution measurement; gas sensors; optical planar waveguides; optical polymers; optical resonators; optical sensors; organic compounds; polymer films; refractive index measurement; silicon compounds; SiO2-SiN; air quality monitoring; contact lithography; ethyl cellulose polymer coating; evanescent wave interaction; integrated optics chemical sensor; isopropanol sensitivity; layout optimisation; lossy cladding materials; polymer transduction layer; power cross-over fraction; racetrack shape; refractive index change; resonance peak; ring resonator; signal readout; swelling; wavelength tracking;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040062
