Frequency noise mitigation in advanced interferometric fibre strain sensors
Frequency noise greatly limits the resolution of high resolution fibre optic strain sensors. The experiments presented in this thesis provide an effective way of obtaining better strain resolution in systems limited by laser frequency noise. In this thesis two main methods are utilised; active frequency noise suppression through feedback control, and post processing noise removal. In chapters 2, 3, and 4, we explore different methods to reduce the frequency noise in lasers used to interrogate...[Show more]
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