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Tunable air-suspended polymer grating couplers
Author(s): Christoph Prokop; Tobias Schmalz; Philipp Kleessen; Bert Laegel; Sandra Wolff; Arnan Mitchell; Christian Karnutsch
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Paper Abstract

We present thermal tuning of air-suspended SU-8 polymer waveguide grating couplers for TE-polarized light. Numerical simulations have been performed to estimate the wavelength shift caused by the change of temperature. Due to the small positive thermal expansion and large negative thermo-optic coefficient of SU-8, a shift toward shorter wavelengths is expected. In the experimental evaluation, a negative wavelength shift from 1542 nm at 20°C toward 1527 nm at 56°C is obtained with approximately 0.42    nm K 1 matching the theoretical considerations.

Paper Details

Date Published: 27 June 2017
PDF: 4 pages
Opt. Eng. 56(6) 067112 doi: 10.1117/1.OE.56.6.067112
Published in: Optical Engineering Volume 56, Issue 6
Show Author Affiliations
Christoph Prokop, Hochschule Karlsruhe Technik und Wirtschaft (Germany)
RMIT Univ. (Australia)
Tobias Schmalz, Hochschule Karlsruhe Technik und Wirtschaft (Germany)
Philipp Kleessen, Hochschule Karlsruhe Technik und Wirtschaft (Germany)
Bert Laegel, Technische Univ. Kaiserslautern (Germany)
Sandra Wolff, Technische Univ. Kaiserslautern (Germany)
Arnan Mitchell, RMIT Univ. (Australia)
Christian Karnutsch, Hochschule Karlsruhe Technik und Wirtschaft (Germany)
RMIT Univ. (Australia)

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