Download Long-Distance Optical Fiber Sensor Systems

NUS Graduate School for Integrative Sciences and Engineering
Research Project Write-up
Title of Project :
Long-Distance Optical Fiber Sensor Systems
Name of Supervisor :
YU Changyuan
Contact Details:
ECE, NUS, Phone: 65163590, E-Mail: [email protected]
Short Description
Fiber Bragg grating (FBG) fiber sensors are very attractive in many applications due
to their high versatile advantages such as high sensitivity, electro-magnetic immunity,
compactness, high resolution and high optical signal-to-noise ratio (SNR) against the
noise. Because of the noise and loss induced by the Rayleigh scattering and
attenuation along the fiber respectively, the maximum sensing distance of a FBG
sensor system with a broadband light source is limited up to 25 km. In practical usage,
simple and easy launched long-distance sensor systems are desired. In this project,
we propose a novel sensor system to measure the temperature and strain based on
erbium-doped fiber (EDF) and Raman amplification, which can reach a distance over
100 km.