A passive frequency noise insensitive fiber strain sensor using post processing
Laser frequency fluctuations limit the ultimate resolution in interferometric fiber sensors. In this work, we demonstrate an interferometric sensor insensitive to the effects of frequency change in an interrogating laser. A system is characterized showing a minimum of 4.5 orders of magnitude frequency change reduction, and a demonstrated broadband improvement of up to 1.5 orders of magnitude for signals between 100 mHz and 1 Hz. Using this technique a resolution of less than a nanostrain/rtHz...[Show more]
|Collections||ANU Research Publications|
|Source:||Proceedings of SPIE - The International Society for Optical Engineering|
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