报告时间：5月27日 10:30

报告地点：兴业光学楼500室

题目：Optomechanical interactions in pulsed fibre lasers – from high-harmonic mode-locking to all-optical bit storage

Abstract：

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.

About the speaker：

Dr. Pang graduated from Tianjin University (bachelor degree) and Tsinghua University (Master degree) in 2004 and 2007. He obtained his PH. D degree from Hong Kong Polytechnic University in 2011. During his PH. D period, meng’s research 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, where his research topics were nonlinear fibre optics and random fibre lasers. From 2013, he worked as a postdoc fellow in Russell’s division, Max-Planck Institute for Science of Light (MPL), Germany. His research interests at MPL include photonic crystal fibres, optomechanics, fibre lasers and pulse propagation in fibres.