Monolithic modulator and demodulator of differential quadrature phase-shift keying signals based on silicon microrings.
Silicon microring resonators are proposed to achieve ultrasmall differential quadrature phase-shift keying modulators and demodulators operated at 20 Gb/s, which may require a dramatically reduced chip size. The modulators are characterized in terms of the carrier transit time and misalignment of the driving signals, while the demodulation performance is analyzed in terms of the bandwidth and frequency detuning of the demodulator. A bit-error rate of <10(-9) is achieved using all microring-based devices in the back-to-back case.
Zhang
Lin
L
Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA. linzhang@usc.edu
Yang
Jeng-Yuan
JY
Li
Yunchu
Y
Song
Muping
M
Beausoleil
Raymond G
RG
Willner
Alan E
AE