Laser Spectral Linewidth Reduction Using an Integrated Pound-Drever-Hall Stabilization System in 180 nm CMOS SOI

An Integrated Pound-Drever-Hall laser stabilization system is demonstrated where the electronic and photonic components are monolithically integrated in the GF7RFSOI CMOS SOI process. An off-chip Fabry-Perot cavity with quality factor of 48000 is used as the frequency reference to reduce the linewidth of a commercially available distributed feedback laser from 246 kHz to 7 kHz. The electronic-photonic chip consumes 83 mW and occupies 1.6 mm2 area.