Ultrasonic sensing using Yb3+/Er3+-codoped distributed feedback fibre grating lasers
Source abstract
Abstract
Yb3+/Er3+-codoped distributed feedback (YbEr-DFB) fibre grating lasers have been \ninvestigated for the detection of ultrasonic Lamb waves generated in an aluminum \nplate. Two sensor configurations have been investigated. A path length \nimbalanced readout Mach- Zehnder interferometer was used to measure the laser \nfrequency shift induced by ultrasonic vibration. The resolution to out-of-plane \ndisplacement was 3 x10-15 m/Ã Â Hz for a continuous ultrasonic wave at a frequency \nof 470 kHz. Ultrasonic waves were also detected by directly monitoring the laser \noutput power. This simplified configuration is useful for tone burst AE signals \ngenerated by a low energy impact
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Fiber Optic Sensors · Advanced Fiber Laser Technologies · Photonic and Optical Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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