Integrated optical sensors for the chemical domain

Paul Lambeck

    Research output: Contribution to journalArticleAcademicpeer-review

    180 Citations (Scopus)

    Abstract

    During the last decade there has been a rapidly growing interest in integrated optical (IO) sensors, expecially because many of them principally allow for sensitive, real time, label-free-on-site measurements of the concentration of (bio-)chemical species. This review aims at giving an overview of the most relevant developments in this area. After a general introduction into the field of IO sensors for the chemical domain, relevant aspects of integrated optics and chemical sensing are presented in short. A large variety of IO sensing platforms are introduced and discussed: interferometers, resonators, coupling-based devices such as grating couplers and surface plasmon resonance based sensors and finally a new class of sensors based on chemically induced field profile changes. Strong and weak points of principle and of configuration based on these principles are indicated and the main performance data of the IO sensing platforms, especially the obtained resolution, are indicated. Best resolutions of the chemically induced refractive indices on the order of magnitude $10^{-6}-10^{-8}RIU$ can be obtained, corresponding to a resolution of $10^{-3}-10^{-5}$nm in the chemically induced growth of layer thickness of chemo-optical transducer materials. Depending on the anlalyte and the type of transduction layer chemical concentrations down to some ppb or some pg $ml^{-1}$can be determined. Several IO sensing systems are commercially available. Extension of individual sensors to sensor arrays is treated and finally an outlook for the future is given.
    Original languageUndefined
    Article number10.1088/0957-0233/17/8/R01
    Pages (from-to)R93-R116
    Number of pages24
    JournalMeasurement science and technology
    Volume17
    Issue number2
    DOIs
    Publication statusPublished - 26 Jun 2006

    Keywords

    • METIS-238262
    • IOMS-SNS: SENSORS
    • EWI-7688
    • integrated optical sensors
    • chemo-optical sensors
    • Review
    • Integrated Optics
    • IR-63614

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