Thermal tuning of a silicon photonic crystal cavity infilled with an elastomer

A. Koray Erdamar; Matheus M. van Leest; Stephen J. Picken; J. Caro

doi:10.1117/12.893940

12 September 2011 Thermal tuning of a silicon photonic crystal cavity infilled with an elastomer

A. Koray Erdamar, Matheus M. van Leest, Stephen J. Picken, J. Caro

Proceedings Volume 8095, Active Photonic Materials IV; 80951J (2011) https://doi.org/10.1117/12.893940
Event: SPIE NanoScience + Engineering, 2011, San Diego, California, United States

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.

Citation Download Citation

A. Koray Erdamar, Matheus M. van Leest, Stephen J. Picken, and J. Caro "Thermal tuning of a silicon photonic crystal cavity infilled with an elastomer", Proc. SPIE 8095, Active Photonic Materials IV, 80951J (12 September 2011); https://doi.org/10.1117/12.893940

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