Proposal of highly sensitive optofluidic sensors based on dispersive photonic crystal waveguides

Sanshui Xiao, Niels Asger Mortensen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Optofluidic sensors based on highly dispersive two-dimensional photonic crystal waveguides are studied theoretically. Results show that these structures are strongly sensitive to the refractive index of the infiltrated liquid (nl), which is used to tune dispersion of the photonic crystal waveguide. The waveguide mode-gap edge shifts about 1.2 nm for δnl = 0.002. The shifts can be explained well by band structure theory combined with first-order perturbation theory. These devices are potentially interesting for chemical sensing applications.
    Original languageEnglish
    JournalJournal of Optics A: Pure and Applied Optics (Print)
    Volume9
    Pages (from-to)S463-S467
    ISSN2040-8978
    DOIs
    Publication statusPublished - 2007

    Keywords

    • sensors
    • optical waveguide
    • photonic crystal

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