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Proceedings Paper

Development of a new polymer (OSTE+) optical waveguide for evanescent wave absorption-based photonic sensors
Author(s): Sonatan Das; Amrit Patnaik; V. Ramgopal Rao; Tapanendu Kundu
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Paper 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.

Paper Details

Date Published: 28 February 2020
PDF: 7 pages
Proc. SPIE 11277, Organic Photonic Materials and Devices XXII, 1127718 (28 February 2020); doi: 10.1117/12.2544721
Show Author Affiliations
Sonatan Das, Indian Institute of Technology Bombay (India)
Amrit Patnaik, Indian Institute of Technology Bombay (India)
V. Ramgopal Rao, Indian Institute of Technology Bombay (India)
Tapanendu Kundu, Indian Institute of Technology Bombay (India)

Published in SPIE Proceedings Vol. 11277:
Organic Photonic Materials and Devices XXII
Christopher E. Tabor; François Kajzar; Toshikuni Kaino, Editor(s)

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