Optoelectrochemical transduction on planar optical waveguides

Planar optical waveguides overlaid with electrochemically modulated sensing films constitute a powerful new class of chemical transducer. The effects on the modal absorption spectrum of depositing a highly absorbing electrochromic film on an optical waveguide are modeled. Theoretical and experimental results are given for such a device consisting of a lutetium biphthalocyanine film deposited on an indium tin oxide-coated potassium ion-exchanged glass waveguide, for application as a chlorine sensor.<
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