Refractive index sensing in aqueous environment using three different polymeric waveguide interferometers

M. Wang, Jussi Hiltunen, Risto Myllylä

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    In this work, the performances of three developed polymer integrated optical sensors based on different waveguide configurations were evaluated for homogeneous refractive index (RI) sensing in aqueous environment. Young interferometer configuration with reference and sensing waveguide arms was utilized in sensor chips. Light from a laser source was end-fire coupled into the chips and interference pattern produced by the out coupled light was investigated. External fluidic pump was used to produce the analyte flow. The homogeneous bulk refractive index change was characterized by applying DI-water with varying glucose concentrations. With an interaction length of 1 cm a detection limit in the order of 10-5 ~ sub-10-6 refractive index unit (RIU) was determined. The sensing performances are compared among the sensors in terms of sensitivity, stability, multiparameter sensing ability, and fabrication and operation simplicity. The polymeric-inorganic composited rib waveguide configuration showed the highest performance and relatively simple fabrication process amongst the evaluated sensors.
    Original languageEnglish
    Title of host publicationOSAV'2012
    Subtitle of host publication3rd International Topical Meeting on Optical Sensing and Artificial Vision
    EditorsIgor Gurov
    PublisherAmerican Institute of Physics (AIP)
    Pages166-171
    Volume1537
    ISBN (Print)978-0-7354-1161-6
    DOIs
    Publication statusPublished - 2013
    MoE publication typeNot Eligible
    Event3rd International Topical Meeting on Optical Sensing and Artificial Vision, OSAV 2012 - Saint Petersburg, Russian Federation
    Duration: 14 May 201217 May 2012

    Publication series

    SeriesAIP Conference Proceedings
    Volume1537
    ISSN0094-243X

    Conference

    Conference3rd International Topical Meeting on Optical Sensing and Artificial Vision, OSAV 2012
    Abbreviated titleOSAV 2012
    Country/TerritoryRussian Federation
    CitySaint Petersburg
    Period14/05/1217/05/12

    Keywords

    • integrated optics devices
    • polymer waveguides
    • sensors
    • young interferometer

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