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Proceedings Paper

Thermal tuning of a silicon photonic crystal cavity infilled with an elastomer
Author(s): A. Koray Erdamar; Matheus M. van Leest; Stephen J. Picken; J. Caro
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Paper Abstract

Thermal tuning of the transmission of an elastomer infilled photonic crystal cavity is studied. An elastomer has a thermal expansion-induced negative thermo-optic coefficient that leads to a strong decrease of the refractive index upon heating. This property makes elastomer highly suitable for thermal tuning of the transmission of a cavity, which is demonstrated by global infilling of a hole-type silicon photonic crystal slab and global thermal tuning. In the temperature range 20-60 0C the cavity peak shows a pronounced elastomer-induced blue shift of 2.7 nm, which amply overcompensates the red shift arising from the thermo-optic property of the silicon. These results qualify the elastomer for tuning by local optical heating.

Paper Details

Date Published: 12 September 2011
PDF: 8 pages
Proc. SPIE 8095, Active Photonic Materials IV, 80951J (12 September 2011); doi: 10.1117/12.893940
Show Author Affiliations
A. Koray Erdamar, Technische Univ. Delft (Netherlands)
Matheus M. van Leest, Technische Univ. Delft (Netherlands)
Stephen J. Picken, Technische Univ. Delft (Netherlands)
J. Caro, Technische Univ. Delft (Netherlands)


Published in SPIE Proceedings Vol. 8095:
Active Photonic Materials IV
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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