Abstract
Low-frequency sensitivities of interferometric magnetic fiber optic sensors have been limited by the presence of a large residual signal at the dither frequency which limits the dynamic range and upconverts low-frequency noise into sideband noise around the carrier. We present an operating regime that enables us to eliminate residual signals associated with the ac carrier. By choosing the proper carrier frequency and amplitude we obtain a nulled residual signal, strong magnetomechanical coupling, and an increase in signal-to-noise ratio of approximately 13 dB over previously reported results. A minimum detectable field of 45 pT/(Hz)1/2 at 0.1 Hz is demonstrated.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
