Si-waveguide-based optical power monitoring of 2$\times$2 Mach$\unicode{x2013}$Zehnder interferometer based on InGaAsP/Si hybrid MOS optical phase shifter

Tomohiro Akazawa, Stéphane Monfray, Frédéric Boeuf +3

Transparent in-line optical power monitoring in Si programmable photonic integrated circuits (PICs) is indispensable for calibrating integrated optical devices such as optical swit…