Electronics Letters · 2004 · 53 citations · 5 references
Natural SciencesChemical EngineeringMaterials SciencePolymer ChemistryPolymer MaterialsSensorsChemical SensorsOptical PolymersOptical SensingOptical SensorsPolymer Thin FilmsSensor MaterialsChemical Sensor MaterialsOptical Chemical SensingPolymer SensorsReadoutResonanceRing Resonator SensorsSignal ReadoutSignal Readout Techniques
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.
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Sensor based on an integrated optical microcavity
E. Krioukov, D.J.W. Klunder, A. Driessen et al. · Optics Letters · 2002 · 232 citations