学术报告四十八：Microwave and Photonic Sensors

发表于 2017-11-01 00:00

题目：Microwave and Photonic Sensors

时间：2017年11月2日上午9:00

地点：北区光电所346会议室

报告人：Dr. Hai Xiao (Clemson University)

摘要:Research and technology development in photonic micro devices and structures have experienced a significant growth in recent years, fueled by their broad applications as sensors for in situ, highly sensitive measurement of a wide variety of physical, chemical and biological quantities. The latest advancements in high precision three dimensional (3D) micro/nano fabrication techniques have opened a window of opportunity to develop new integrated photonic sensors delivering unprecedented performance. Consequently, the optical sensor field has quietly gone through a revolutionary transition from the traditional discrete bulk optics to today’s microdevices and microstructures with enhanced functionalities and improved robustness.

This talk summarizes our recent research progresses in the design, fabrication, and characterization of various micromachined optical sensors and devices for biomedical applications. These sensors are made by using an ultrafast laser and/or additive manufacturing to fabricate various microstructures directly in flat substrates and optical fibers. Specific examples include optical interferometers, fiber gratings, integrated whispering gallery mode (WGM) resonators, waveplates, polarizers, cantilevers, microfluidics, and fluorescence probes. Applications include ultrasensitive refractive index sensing, biological sample analysis, miniaturized probes for tissue imaging, photoacoustic imaging, microfluidics, single cell characterizations, and sensor-embedded smart parts. While many new sensors and measurement systems are still in the research stage, the challenges will be discussed and the perspectives will be shared on these new platforms.

Bio: Dr. Hai Xiao is the Director of the Photonics Technology Laboratory (PTL) and the S.L. Bell Distinguished Professor of Electrical and Computer Engineering at Clemson University. He received his Ph.D. degree in electrical engineering from Virginia Tech in 2000.  He is the recipient of a number of prestigious awards including the Office of Naval Research Young Investigator Program (YIP) Award in 2006 and the R&D 100 Award in 2004.  His research interests focus on photonic and microwave sensors and instrumentation for applications in energy, intelligent infrastructure, clean environment, biomedical sensing/imaging, and national security.  Dr. Xiao has co-authored over 300 technical papers and led more than 30 research projects, totaling $17M in research funding from various funding agencies.