%0 Conference Proceedings %T Photonic integrated circuits for Department of Defense-relevant chemical and biological sensing applications: state-of-the-art and future outlooks %A Chandrasekar, R. %A Lapin, Z. J. %A Nichols, A. S. %A Braun, R. M. %A Fountain, A. W. %S Opt. Eng. %D 2019 %V 58 %N 02 %@ 0091-3286 %F Chandrasekar_etal2019 %O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1346), last updated on Wed, 12 May 2021 18:16:14 -0500 %X Photonic integrated circuits (PICs), the optical counterpart of traditional electronic integrated circuits, are paving the way toward truly portable and highly accurate biochemical sensors for Department of Defense (DoD)-relevant applications. We introduce the fundamentals of PIC-based biochemical sensing and describe common PIC sensor architectures developed to-date for single-identification and spectroscopic sensor classes. We discuss DoD investments in PIC research and summarize current challenges. We also provide future research directions likely required to realize widespread application of PIC-based biochemical sensors. These research directions include materials research to optimize sensor components for multiplexed sensing; engineering improvements to enhance the practicality of PIC-based devices for field use; and the use of synthetic biology techniques to design new selective receptors for chemical and biological agents. %K photonic integrated circuits %K PIC %K optical waveguides %K defense applications %R 10.1117/1.OE.58.2.020901 %U https://www.spiedigitallibrary.org/journals/optical-engineering/volume-58/issue-02/020901/Photonic-integrated-circuits-for-Department-of-Defense-relevant-chemical-and/10.1117/1.OE.58.2.020901.full %U https://doi.org/10.1117/1.OE.58.2.020901 %P 1