Demodulation of 20 Gbaud/s differential quadrature phase-shift keying signals using wavelength-tunable silicon microring resonators

We experimentally demonstrate a demodulation scheme for 20 Gbaud/s nonreturn-to-zero differential quadrature phase-shift keying signals using a silicon microring resonator. Either the I or Q channel can be selected by electrical tuning using the carrier depletion effect. Error-free (bit error rate &...

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Bibliographic Details
Published inOptics letters Vol. 37; no. 16; p. 3462
Main Authors Xu, Ke, Wang, Liang, Lei, Gordon K P, Cheng, Zhenzhou, Chen, Yimin, Wong, Chi Yan, Shu, Chester, Tsang, Hon Ki
Format Journal Article
LanguageEnglish
Published United States 15.08.2012
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Summary:We experimentally demonstrate a demodulation scheme for 20 Gbaud/s nonreturn-to-zero differential quadrature phase-shift keying signals using a silicon microring resonator. Either the I or Q channel can be selected by electrical tuning using the carrier depletion effect. Error-free (bit error rate <10(-9)) operations can be achieved for both the I and Q channels with ~1.5 dB 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.
ISSN:1539-4794
DOI:10.1364/OL.37.003462