Abstract

A microring notch filter with a thermally-tunable Mach-Zehnder coupler is demonstrated. The thermal tuning is enabled via an intrinsic thermal resistor based on a lateral p-i-p junction across a silicon waveguide. Experimental results show that the extinction ratio of the notch filter can be increased by >10 dB with a current of 0.4 mA.

© 2012 Optical Society of America

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