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Proceedings Paper

Temperature dependence of polymer waveguide directional coupler
Author(s): Alok Kumar Das; Amar K. Ganguly; Mehabub A. Mondal; Dilip K. Paul
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Paper Abstract

Temperature dependence of the coupling characteristics between a single-mode fiber and thin film directional coupler is studied. Matching condition of the propagation constants of the fiber half-coupler and thin film waveguide required for maximum power coupling into the thin film guide is investigated. A relation of the coupled power with the change in temperature of the coupler is developed and the temperature sensitivity of the coupled power is compared for both uniform and tapered coupling structures. Experimental results of temperature dependent coupling between the fiber half-coupler and uniform thin film PMMA waveguides of different molecular weights are verified with the theoretical estimates.

Paper Details

Date Published: 9 March 1994
PDF: 7 pages
Proc. SPIE 2070, Fiber Optic and Laser Sensors XI, (9 March 1994); doi: 10.1117/12.169935
Show Author Affiliations
Alok Kumar Das, Jadavpur Univ. (India)
Amar K. Ganguly, Jadavpur Univ. (India)
Mehabub A. Mondal, Jadavpur Univ. (India)
Dilip K. Paul, COMSAT Labs. (United States)

Published in SPIE Proceedings Vol. 2070:
Fiber Optic and Laser Sensors XI
Ramon P. DePaula, Editor(s)

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