Adaptive Wavelength Tracking and Temperature Tuning of A 45Gbps Coupled Ring Resonator Based DWDM Link

We demonstrate an adaptive wavelength locking system for micro-ring-based DWDM transceivers with high-order filters, utilizing DC data. Despite $20^{\circ} \mathrm{C}$ temperature fluctuations, system-level measurements at 45 Gbps achieve BER<1E-10 with $1.2 \mathrm{pJ} /$ bit EIC power and $0.3 \mathrm{pJ} /$ bit heater power.