Microring quadrature modulators.
A high-Q microring integrated with a dual-2x2-Mach-Zehnder interferometer coupler is proposed as a low-chirp, low-distortion, low-drive-power, quadrature modulator capable of M-ary quadrature amplitude modulation and phase-shift keyed outputs. The modulation rate can greatly exceed the resonator linewidth and is limited only by the coupler response or free spectral range.
Sacher
Wesley D
WD
Department of Electrical and Computer Engineering and Institute for Optical Sciences, University of Toronto,10 King's College Road, Toronto, Ontario, M5S 3G4, Canada. wesley.sacher@utoronto.ca
Poon
Joyce K S
JK