Ultrasonic sensing using Yb3+/Er3+-codoped distributed feedback fibre grating lasers.
Date
2005-02-01T00:00:00Z
Authors
Supervisor/s
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Physics
Department
Type
Article
ISSN
0964-1726
Format
Citation
C-C Ye and R P Tatam; Ultrasonic sensing using Yb3+/Er3+-codoped distributed feedback fibre grating lasers. Smart Materials and Structures 2005, Vol. 14, No. 1, pp170-176
Abstract
Yb3+/Er3+-codoped distributed feedback (YbEr-DFB) fibre grating lasers have been investigated for the detection of ultrasonic Lamb waves generated in an aluminum plate. Two sensor configurations have been investigated. A path length imbalanced readout Mach- Zehnder interferometer was used to measure the laser frequency shift induced by ultrasonic vibration. The resolution to out-of-plane displacement was 3 x10-15 m/Ã Â Hz for a continuous ultrasonic wave at a frequency of 470 kHz. Ultrasonic waves were also detected by directly monitoring the laser output power. This simplified configuration is useful for tone burst AE signals generated by a low energy impact
Description
Software Description
Software Language
Github
Keywords
Ultrasonic sensing, distributed feedback fibre laser, fibre Bragg grating, Yb3+/Er3+-codoped fibre
DOI
Rights
Published by IOP Publishing. This is the Author Accepted Manuscript.
This article may be used for personal use only. The final published version (version of record) is available online at 10.1088/0964-1726/14/1/016. Please refer to any applicable publisher terms of use.