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Photonic crystal resonances for sensing and imaging

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JournalJournal of Optics (United Kingdom)
DateAccepted/In press - 23 May 2018
DatePublished (current) - 12 Jun 2018
Issue number7
Volume20
Number of pages23
Original languageEnglish

Abstract

This review provides an insight into the recent developments of photonic crystal (PhC)-based devices for sensing and imaging, with a particular emphasis on biosensors. We focus on two main classes of devices, namely sensors based on PhC cavities and those on guided mode resonances (GMRs). This distinction is able to capture the richness of possibilities that PhCs are able to offer in this space. We present recent examples highlighting applications where PhCs can offer new capabilities, open up new applications or enable improved performance, with a clear emphasis on the different types of structures and photonic functions. We provide a critical comparison between cavity-based devices and GMR devices by highlighting strengths and weaknesses. We also compare PhC technologies and their sensing mechanism to surface plasmon resonance, microring resonators and integrated interferometric sensors.

    Research areas

  • guided mode resonances, optical biosensors, photonic crystal cavities, Photonic crystals, refractive index sensors

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