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

Volume

40

Issue

1

fYear

2004

Firstpage

63

Lastpage

65

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 Si_xN_y 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;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20040062

Filename

1260679