“学萃讲坛”第569期--Optomechanical Interactions in Pulsed Fiber Lasers – from High-harmonic Mode-locking to All-optical Bit Storage
报告题目：Optomechanical Interactions in Pulsed Fiber Lasers–from High-harmonic Mode-locking to All-optical Bit Storage
Meng Pang graduated from Tianjin University (with bachelor degree) and Tsinghua University (with Master degree) in 2004 and 2007. He obtained his Ph. D degree from Hong Kong Polytechnic University in 2011. During the Ph. D period, his research work was focused on hollow-core photonic crystal fibre sensors and devices. In 2011, He joined Prof. Xiaoyi Bao’s group as a postdoc fellow at University of Ottawa, Canada, where he studied random fibre lasers and nonlinear fibre optics. From 2013, he worked as a postdoc fellow in Russell’s division, Max-Planck Institute for Science of Light (MPL), Germany. His research topics at MPL include optomechanical effects in photonic crystal fibres, mode-locked fibre lasers and pulse propagation in optical fibres.
Pulsed fibre lasers mode-locked at a high harmonic of their round-trip frequency have many potential applications, from telecommunications to data storage. Control of multiple pulses in passively mode-locked fibre lasers has, however, proven very difficult to achieve. This has recently changed with the advent of fibre lasers mode-locked by intense optomechanical interactions in a short length of photonic crystal fibre (PCF). Optomechanical coupling between cavity modes gives rise to highly stable, optomechanically bound, laser soliton states. The repetition rate of these states corresponds to the mechanical resonant frequency in the PCF core, which can be a few GHz. In this talk, we will show that a fibre laser coupled with a mechanical resonator can be successfully used for generating GHz-repetition-rate ultrafast pulse train, as well as storing optical-soliton-bits over many hours corresponding to an error-free transmission of GHz-rate soliton sequence over tens of billion kilometres.