Prof. Hai Xiao

The Holcombe Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634, USA

Prof. Hai Xiao

The Holcombe Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634, USA

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Academic Career Length

28Years (1999-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2003 in Optical Engineering

Journal Article

Novel data processing techniques for dispersive white light interferometer

Bing Qi

Gary Pickrell

JunCheng Xu

Po Zhang

Yuhong Duan

Anbo Wang

White light interferometry has been used in the sensing area for many years. A novel data processing method for demodulating the information from the interference spectrum of a white light system is presented. Compared with traditional algorithms, both high-resolution and large dynamic range have been achieved with a relatively low-cost system. Details of this arithmetic are discussed. A compact white light interferometric system employing this algorithm has been developed, combined with fiber Fabry-Perot sensors. A

\pm 0.5 - nm

stability over 48 hours with a dynamic range on the order of tens of microns has been achieved with this system. The temperature dependence of this system has been analyzed, and a self-compensating data processing approach is adopted. Experimental results demonstrated a

\pm 1.5 - nm

shift in the temperature range of 10 to

45 ° C .

25 July 2014 in Optics Express

Journal Article

Spatially continuous distributed fiber optic sensing using optical carrier based microwave interferometry

Jie Huang

Xinwei Lan

Ming Luo

Hai Xiao

This paper reports a spatially continuous distributed fiber optic sensing technique using optical carrier based microwave interferometry (OCMI), in which many optical interferometers with the same or different optical path differences are interrogated in the microwave domain and their locations can be unambiguously determined. The concept is demonstrated using cascaded weak optical reflectors along a single optical fiber, where any two arbitrary reflectors are paired to define a low-finesse Fabry-Perot interferometer. While spatially continuous (i.e., no dark zone), fully distributed strain measurement was used as an example to demonstrate the capability, the proposed concept may also be implemented on other types of waveguide or free-space interferometers and used for distributed measurement of various physical, chemical and biological quantities.

1 June 2014 in Optical Engineering

Journal Article

Simultaneous measurement of temperature and pressure with cascaded extrinsic Fabry–Perot interferometer and intrinsic Fabry–Perot interferometer sensors

Yinan Zhang

Jie Huang

Xinwei Lan

Lei Yuan

Hai Xiao

Pressure and temperature are two important parameters in the well and reservoir down-hole monitoring. Accurate, continuous, and real-time data of pressure and temperature helps in oil and reservoir management.¹ Sensors with dual-parameter sensing capability and survivability in the down-hole harsh environment are highly necessary in such applications. Fiber-optic sensors, with advantages such as small size, low loss, high sensitivity, resistance to harsh environments, and multiplexing capability, are good candidates for pressure and temperature down-hole monitoring.

9 April 2014 in Optics Letters

Journal Article

All-in-fiber optofluidic sensor fabricated by femtosecond laser assisted chemical etching

Lei Yuan

Jie Huang

Xinwei Lan

Hanzheng Wang

Lan Jiang

Hai Xiao

An all-in-fiber prototype optofluidic device was fabricated by femtosecond laser irradiation and subsequent selective chemical wet etching. Horizontal and vertical microchannels can be flexibly created into an optical fiber to form a fluidic cavity with inlets/outlets. The fluidic cavity also functions as an optical Fabry–Perot cavity in which the filled liquid can be probed. The assembly-free microdevice exhibited a fringe visibility of 20 dB and was demonstrated for measurement of the refractive index of the filling liquids. The proposed all-in-fiber optofluidic micro device is attractive for chemical and biomedical sensing because it is flexible in design, simple to fabricate, mechanically robust, and miniaturized in size.

7 November 2013 in Sensors

Journal Article

A Coaxial Cable Fabry-Perot Interferometer for Sensing Applications

This paper reports a novel coaxial cable Fabry-Perot interferometer for sensing applications. The sensor is fabricated by drilling two holes half-way into a coaxial cable. The device physics was described. The temperature and strain responses of the sensor were tested. The measurement error was calculated and analyzed.

11 August 2015 in Applied Optics

Journal Article

Microwave interrogated large core fused silica fiber Michelson interferometer for strain sensing

Liwei Hua

Yang Song

Jie Huang

Xinwei Lan

Yanjun Li

Hai Xiao

A Michelson-type large core optical fiber sensor has been developed, which is designed based on the optical carrier-based microwave interferometry technique, and fabricated by using two pieces of 200-μm diameter fused silica core fiber as two arms of the Michelson interferometer. The interference fringe pattern caused by the optical path difference of the two arms is interrogated in the microwave domain, where the fringe visibility of 40 dB has easily been obtained. The strain sensing at both room temperature and high temperatures has been demonstrated by using such a sensor. Experimental results show that this sensor has a linear response to the applied strain, and also has relatively low temperature-strain cross talk. The dopant-free quality of the fused silica fiber provides high possibility for the sensor to have promising strain sensing performance in a high temperature environment.

About Me

Dr. Hai Xiao joined Clemson University in 2013 as the Samuel Lewis Bell Distinguished Professor of Electrical and Computer Engineering, jointly affiliated with COMSET. Previously, he was a Professor of Electrical Engineering at the Missouri University of Science and Technology (Missouri S&T), where he served as the founding director of the Photonics Technology Laboratory (PTL). He is the recipient of a number of prestigious awards, including the Office of Naval Research Young Investigator Program (YIP) Award in 2006, the R&D 100 Award in 2004, and the Virginia Tech Outstanding Achievement Award in 2003. His research interests mainly focus on photonic and microwave sensors and instrumentation for applications in energy, intelligent infrastructure, a clean environment, biomedical sensing/imaging, and national security. His research thrust areas include (1) novel optical/microwave micro/nanomaterials, structures, devices and sensors; (2) fiber-optic and microwave sensors and instrumentation for applications in harsh environments; (3) ultrafast laser machining, processing/modification, and characterization of materials and structures; and (4) optical biomedical imaging, sensing, tomography/microscopy, and spectroscopy. He has co-authored over 288 technical papers and participated in 29 research projects, totaling about USD 14M in research funding in the past 10 years from various sources, including NSF, DOE, ONR, NIH, ARO, national laboratories, and private companies.

Prof. Hai Xiao

Prof. Hai Xiao

Research Focus & Metrics

Academic Career Length

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Representative Publications

About Me