Design Considerations to Realize Differential Absorption-Based Optofluidic Sensors for Determination of Ionic Content in Water

Design Considerations to Realize Differential Absorption-Based Optofluidic Sensors for Determination of Ionic Content in Water

Integrated optofluidic absorption spectroscopy has the potential to be used in the real-time identification and quantification of ionic content in drinking water. Such an approach requires single mode operation in combination with low propagation and bend losses. The design criteria for the realizat...

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Veröffentlicht in:IEEE sensors journal 2018-08, Vol.18 (15), p.6051-6058
Hauptverfasser: Steen, Gerrit W., Fuchs, Elmar C., Wexler, Adam D., Offerhaus, Herman L.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Fluids
integrated design
integrated optics
Ions
optical interferometry
Optical sensors
Optical waveguides
optimization methods
Sensitivity
silicon photonics
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Zusammenfassung:Integrated optofluidic absorption spectroscopy has the potential to be used in the real-time identification and quantification of ionic content in drinking water. Such an approach requires single mode operation in combination with low propagation and bend losses. The design criteria for the realization of an integrated near-infrared sensor platform fabricated using silicon waveguide-based technology is presented. The cross section of TriPleX waveguides was optimized for a spectral region between 940 and 1040 nm. The waveguide structure provides single mode operation, high sensitivity combined with reasonable tolerance for fabrication deviations, and
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2018.2846676