Optical Fibre Photonic Microcells and applications

Speaker:Prof.Wei Jin (HKPU)

Time and Date: 14:00- , Jul. 2, 2015

Place: Room 525, Optics Building, Handan Campus

 

 

Abstract

This presentation discusses in-fibre photonic microcells and their potential sensing and lab-in-fibre applications. Optical fibre photonic microcell refers to a class of all-fibre devices that have lead-in/out fibre pigtails and in-fibre micro-chamber(s). The micro-chamber confines a propagation mode and liquid- and gas-phase materials simultaneously within it and provides a platform for efficient light-matter interactions, while the lead in/out fibres deliver/collect light signal to/from the micro-chamber. Based on different principles such as light absorption, florescence, photoacoustic and photothermal, refractive index change and opto-mechanical interaction, various sensors and lab-in-fibre devices can be developed. The in-fibre microcells can be conveniently integrated into standard fibre-optic systems for remote interrogation, signal transmission and sensor networking. The fabrication methods of photonic microcells are described and the use of these microcells for gas and liquid detection, acceleration measurement, and in-fibre amplifiers and grating devices are demonstrated.

 

 

Biography

Wei Jin received a BEng degree from Beijing University of Aeronautics and Astronautics in 1984 and a Ph.D. degree from University of Strathclyde in 1991. He joined the Department of Electrical Engineering of The Hong Kong Polytechnic University in 1996 and is currently Chair Professor of Photonic Instrumentation. His research interests includes photonic crystal fibers and devices; optical fiber sensors for strain, temperature, pressure, acoustic field, acceleration, gas, rotation and refractive index measurement; fiber lasers and amplifiers, condition monitoring of electrical power transformers and civil and mechanical structures. He authored/co-authored 2 books, over 250 journal papers and 10 patents in the area of fiber optic devices and sensors. He is a member of International Steering Committee of the international conference series on optical fiber sensors (OFS) and was the technical Chair of OFS-22. He received the President Award of the Hong Kong Polytechnic University for Outstanding Performance and Scholarly Activities.