Abstract
We experimentally demonstrate a demodulation scheme for nonreturn-to-zero differential quadrature phase-shift keying signals using a silicon microring resonator. Either the or channel can be selected by electrical tuning using the carrier depletion effect. Error-free (bit error rate ) operations can be achieved for both the and channels with power penalty compared with a commercial 20 GHz Mach–Zehnder delay interferometer. The tuning range of the ring resonator can be up to 60 GHz, which enables operation over a wide range of data rates.
© 2012 Optical Society of America
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