Topic: High Power Fiber Laser Applications
Speaker: Associate Professor Teh Peh Chiong
Event date: 5/14/2019
Event time: 16:00 p.m.
Venue: Lecture Hall, 4th Floor, Building 7
Sponsor: School of Physics and Electronic Engineering, Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Institute of Science and Technology
Brief Introduction of the Speaker:
Dr. Teh Peh Chiong is currently the attached to the engineering department in a reputable private university in Malaysia. He obtained his PhD from Optoelectronics Research Centre, University of Southampton in 2003, specializing in the area of Optical Communication. Since returning from the United Kingdom after his PhD, he started his career in a research laboratory before moving to the manufacturing industry for several years. His current research focuses on advanced embedded systems design using microcontrollers and FPGA, and also into optoelectronics design for high power laser systems. Dr. Teh has published over 40 papers in various IEEE international conferences and journals, with more than 13 years of experience in research, training and consultancy. Through his vast technical experience, he has worked on various research and seed grants such as Cradle Fund and the MOSTI Technofund grants. Dr Teh has been providing consultancy on technical matters to various companies in Malaysia, from SMEs to local multinational companies. He has been giving technical trainings for many years in area of electronics, optoelectronics as well as in the FTTH related topics.
Abstract:
The explosive growth of fiber optics technology in optical communications has seen many advancements in miniaturisation, improvements to laser packaging technology and cost of laser sources. Demand for Ghz rates and picosecond pulses have made gain switching of semiconductor laser mechanism an attractive method to produce the required picosecond pulses due to its simplicity, versatility, low-cost and highly fiberised system. Conventional means to obtain such pulses will be either through mode-locking or direct/external modulation. However, such methods are increasing difficult (lack of standard components availability) and high cost if the laser source is operated in the 1um region (away from the optical communication bands). Also, such methods also lack the ability to control the pulse waveforms. The research here will focus on the development of the driving electronics and control system required to drive the fiber laser system through direct modulation. Next, we will demonstrate several applications which used the pulse waveform patterning approach.