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Updated: May 23, 2026

Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Experimental demonstration of microring quadrature phase-shift keying modulators
Po Dong1, Chongjin Xie, Long Chen
1Bell Labs, Alcatel-Lucent, Holmdel, New Jersey 07733, USA. po.dong@alcatel-lucent.com
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.
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