title: Demodulation of 20 Gbaud/s differential quadrature phase-shift keying signals using wavelength-tunable silicon microring resonators.
abstract: 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.
authors: Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China. kxu@ee.cuhk.edu.hk
authors: Ke
authors: K
authors: Xu
authors: Liang
authors: L
authors: Wang
authors: Gordon K P
authors: GK
authors: Lei
authors: Zhenzhou
authors: Z
authors: Cheng
authors: Yimin
authors: Y
authors: Chen
authors: Chi Yan
authors: CY
authors: Wong
authors: Chester
authors: C
authors: Shu
authors: Hon Ki
authors: HK
authors: Tsang