ECE: Electrical & Computer Engineering
ECE News

Fiber-Optic Sensors for Fully-Distributed Physical, Chemical and Biological Measurement

12:00 AM - 4:00 PM on Tuesday, December 11, 2012
Location: 460 Turner Street, Suite 303, Blacksburg, VA

Ph.D., Dissertation, Defense for Wang, Yunjing

Graduate Advisory Committee:

Anbo Wang, Chair
James Heflin
Gary Pickrell
Ting Chung Poon
Yong Xu


The thesis proposed fully-distributed fiber-optic sensing technique based on a traveling long-period grating (LPG) in a single-mode optical fiber. The LPG is generated by pulsed acoustic waves that propagate along the fiber. Based on this platform, first we demonstrated the fully-distributed temperature measurement. Then by coating the fiber with functional coatings, we demonstrated fully-distributed biological and chemical sensing. This technique may also permit measurement of other quantities by changing the functional coating on the fiber; therefore it is expected to be capable of other fully-distributed sensing applications.