"Novel Fiber-based Devices for Sensing Applications"

on Friday, September 16, 2011 at 2:15 pm, Warsaw University of Technology, Faculty of Physics (75 Koszykowa Str. in Warsaw), room 111

 

Abstract: Optical fiber-based sensing technologies have been widely developed, due to their notable advantages such as electrically-passive operation, light weight, immunity to radio frequency interference and electromagnetic interference, high sensitivity, compact size, corrosion resistance, easily multiplexing and potentially low cost. Several novel fiber-based sensors and technologies developed are presented here, including fiber Bragg grating (FBG) based sensors, photonic crystal fiber (PCF) based sensors, special fiber (nanofiber, double cladding fiber) based sensors and distributed fiber sensing systems. 

FBGs as instinctive sensors, are ingeniously designed as two-dimensional (2D) tilt sensors, displacement sensors, accelerometers and corrosion sensors here; PCF based evanescent field absorption sensor, PCF induced Mach-Zehnder interferometer and Fabry-Perot refractometer for temperature and refractive index sensing are presented; based on localized surface Plasmon resonant (LSPR) effect, nano-sized fiber tip with gold nanoparticles are demonstrated for live cell index bio-sensing applications; multiplexing techniques, such as optical low coherent reflectometry (OLCR) and optical frequency domain reflectometry (OFDR), for distributed fiber sensing system are briefly discussed as well. 

 

Prof. Perry Ping Shum received the B. Eng. and PhD degrees in electronic and electrical engineering from of the University of Birmingham, UK, in 1991 and 1995, respectively. In 1996, he joined the Hong Kong University. Since July 1997, he joined the City University of Hong Kong. In 1999, he joined the School of Electrical and Electronic Engineering, Nanyang Technological University. He was the founding member of IEEE Photonics Society Singapore Chapter. Since 2002, he has been appointed as the Director of Network Technology Research Centre. He received the Singapore National Academy of Science Young Scientist Award in 2002 for his contributions on optical communication technology. Dr. Shum has published more than 450 papers. He was the chair, committee member and international advisor of many international conferences (e.g. ICOCN, OECC, ECOC, COIN, ACP, ICMAT, ICICS and Photonics Global). His research interests are concerned with optical fiber communications, nonlinear waveguide modeling and fibre-based devices.