title: Experimental demonstration of microring quadrature phase-shift keying modulators.
abstract: Advanced optical modulation formats are a key technology to increase the capacity of optical communication networks. Mach-Zehnder modulators are typically used to generate various modulation formats. Here, we report the first experimental demonstration of quadrature phase-shift keying (QPSK) modulation using compact microring modulators. Generation of 20 Gb/s QPSK signals is demonstrated with 30 μm radius silicon ring modulators with drive voltages of ~6 V. These compact QPSK modulators may be used in miniature optical transponders for high-capacity optical data links.
authors.affiliation: Bell Labs, Alcatel-Lucent, Holmdel, New Jersey 07733, USA. po.dong@alcatel-lucent.com
authors.forename: Po
authors.initials: P
authors.lastname: Dong
authors.forename: Chongjin
authors.initials: C
authors.lastname: Xie
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.forename: Nicolas K
authors.initials: NK
authors.lastname: Fontaine
authors.forename: Young-kai
authors.initials: YK
authors.lastname: Chen