Jiaren Liu
National Research Council, Canada
Title: Phase noise analysis of InAs quantum-dot mode-locked semiconductor lasers
Biography
Biography: Jiaren Liu
Abstract
Phase noise or linewidth of semiconductor diode lasers is vital parameter for various applications in optical sensing and coherent communication. In this talk, phase noise of individual mode in InAs quantum-dot (QD) mode-locked lasers (MLLs) made by National Research Council of Canada were investigated both theoretically and experimentally. Under optimized mode-locked conditions, the minimum linewidth of individual modes is about 0.6MHz, 0.8MHz, or 0.9MHz achieved for the repetition rate of 11GHz, 25GHz, or 34GHz respectively. For MLLs with the above channel spacing, the linewidths of 10 or more laser modes can go down to 1.0MHz at least. Th e relevant experimental result is consistent and fi tted with the theoretical prediction which assumes zeromean Gaussian random processes for both common mode and un-common mode phase noises. Such low phase noise MLLs will be the suitable and cost-eff ective candidate for multiple wavelength applications in long-haul and data-center fi ber optical networks.