Sensitivity enhanced biophotonic sensor utilizing sub-wavelength gratings

Mukesh Yadav; Jens Høvik; Dag Roar Hjelme; Astrid Aksnes

doi:10.1117/12.2321165

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18 September 2018 Sensitivity enhanced biophotonic sensor utilizing sub-wavelength gratings

Mukesh Yadav, Jens Høvik, Dag Roar Hjelme, Astrid Aksnes

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Proceedings Volume 10729, Optical Sensing, Imaging, and Photon Counting: From X-Rays to THz; 107290N (2018) https://doi.org/10.1117/12.2321165
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

We present a sensor design based on a Mach-Zehnder interferometer utilizing sub-wavelength gratings (SWGs) that were included in the waveguide to compensate for the short optical path length and to provide phase modulation. According to 2D finite element method simulations, it is possible to achieve 3-fold enhancement in sensitivity and 50% increase in modulation frequency with the inclusion of SWGs in the sensing arm as well as in the reference arm.

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Mukesh Yadav, Jens Høvik, Dag Roar Hjelme, and Astrid Aksnes "Sensitivity enhanced biophotonic sensor utilizing sub-wavelength gratings", Proc. SPIE 10729, Optical Sensing, Imaging, and Photon Counting: From X-Rays to THz, 107290N (18 September 2018); https://doi.org/10.1117/12.2321165

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