A microwave photonic technique is presented to interrogate a 5 m-long fiber, containing 9 mm-long weak FBGs having 10 mm grating separation, used as a distributed sensor. Hot-spots as small as 20 cm have been measured with an accuracy of 0.5 cm
Title
Weak fiber Bragg grating cascade sensor interrogation using microwave photonic filtering techniques
Published in
Advanced Photonics
Volume
OSA Technical Digest (online)
Pages
SeW1C.2
Conference
Optical Sensors, Barcelona, 2014
Date
2014
Publisher
Washington, D.C., OSA
Record creation date
2014-09-16