Microring-based modulation and demodulation of DPSK signal.
Ultra-small modulator and demodulator for 10 Gb/s differential phase-shift-keying (DPSK), using silicon-based microrings, are proposed. A single-waveguide microring modulator with over-coupling between ring and waveguide generates a DPSK signal, while a double-waveguide microring filter enables balanced DPSK detection. These modulator and demodulator are characterized. A trade-off between pattern dependence of the Duobinary signal and alternate-mark inversion signal power in demodulator design is discussed. Power penalty of the proposed approach is 0.8 dB relative to baseline using conventional modulation and demodulation techniques.
Zhang
Lin
L
Yang
Jeng-Yuan
JY
Song
Muping
M
Li
Yunchu
Y
Zhang
Bo
B
Beausoleil
Raymond G
RG
Willner
Alan E
AE