Characterization of polycrystalline silicon-based photonic crystal-suspended membrane for high temperature applications

Chong Pei Ho; Prakash Pitchappa; Piotr Kropelnicki; Jian Wang; Hong Cai; Yuandong Gu; Chengkuo Lee

doi:10.1117/1.JNP.8.084096

15 July 2014 Characterization of polycrystalline silicon-based photonic crystal-suspended membrane for high temperature applications

Chong Pei Ho, Prakash Pitchappa, Piotr Kropelnicki, Jian Wang, Hong Cai, Yuandong Gu, Chengkuo Lee

Author Affiliations +

Journal of Nanophotonics, Vol. 8, Issue 1, 084096 (July 2014). https://doi.org/10.1117/1.JNP.8.084096

Abstract

We present the design and the characterization of a polycrystalline silicon (Si)-based photonic crystal (PhC)-suspended membrane, working in the mid-infrared wavelengths. In order to facilitate transmission measurement, the PhC membrane is released by removing the underneath Si substrateWe present the design and the characterization of a polycrystalline silicon (Si)-based photonic crystal (PhC)-suspended membrane, working in the mid-infrared wavelengths. In order to facilitate transmission measurement, the PhC membrane is released by removing the underneath Si substrate. Around 97% reflection and 3% transmission at 3.58-μm wavelength are measured at room temperature. Characterization is also done at 450°C and it reveals that the peak reflection of the PhC membrane shifts by 75 nm to higher wavelengths. This corresponds to a linear wavelength shift of 0.174 nm/°C and the thermo-optic coefficient is calculated to be +1.70×10⁻⁴ K⁻¹. By altering the dimension of the PhC air holes, it is also shown that such a thermo-optic effect is compensated.

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Chong Pei Ho, Prakash Pitchappa, Piotr Kropelnicki, Jian Wang, Hong Cai, Yuandong Gu, and Chengkuo Lee "Characterization of polycrystalline silicon-based photonic crystal-suspended membrane for high temperature applications," Journal of Nanophotonics 8(1), 084096 (15 July 2014). https://doi.org/10.1117/1.JNP.8.084096

Published: 15 July 2014

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