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28 February 2020 Development of a new polymer (OSTE+) optical waveguide for evanescent wave absorption-based photonic sensors
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Abstract
Multi-mode planer optical waveguides have been fabricated on PDMS coated glass substrate using off stoichiometry thiolene- epoxy (OSTE+) polymer thin film, by an optical photolithography technique. The light wave-guiding phenomena has been observed in this novel OSTE+ polymer waveguide using prism coupling method. Four discrete propagating optical modes have been observed, upon monochromatic light (635 nm) excitation. These modes were recorded using a USB camera at different angular positions. The evanescent wave absorption of these modes has been exploited for refractive index based photonic sensing applications.
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Sonatan Das, Amrit Patnaik, V. Ramgopal Rao, and Tapanendu Kundu "Development of a new polymer (OSTE+) optical waveguide for evanescent wave absorption-based photonic sensors", Proc. SPIE 11277, Organic Photonic Materials and Devices XXII, 1127718 (28 February 2020); https://doi.org/10.1117/12.2544721
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