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Integrated optics ring-resonator chemical sensor with polymer transduction layer

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3 Author(s)
A. Ksendzov ; Jet Propulsion Lab., Pasadena, CA, USA ; M. L. Homer ; A. M. Manfreda

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.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 1 )