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Published February 5, 2014 | Published
Journal Article Open

Experimental demonstration of a reconfigurable silicon thermo-optical device based on spectral tuning of ring resonators for optical signal processing


We have experimentally demonstrated a reconfigurable silicon thermo-optical device able to tailor its intrinsic spectral optical response by means of the thermo-optical control of individual and uncoupled resonant modes of micro-ring resonators. Preliminarily results show that the device's optical response can be tailored to build up distinct and reconfigurable logic levels for optical signal processing, as well as control of overall figures of merit, such as free-spectral-range, extinction ratio and 3dB bandwidth. In addition, the micro-heaters on top of the ring resonators are able to tune the resonant wavelength with efficiency of 0.25 nm/mW within a range of up to 10 nm, as well as able to switch the resonant wavelength within fall and rise time of 15 μs.

Additional Information

© 2014 Optical Society of America. Received 16 Jan 2014; accepted 24 Jan 2014; published 5 Feb 2014. Authors thank the NSF CIAN ERC (Grant EEC-0812072), CAPES and CNPQ (Brazilian Foundations) for the financial support and Kavli Nanoscience Institute at Caltech for technical support.

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