23 April 2017 On the actual bandwidth of some dynamic fiber optic strain/temperature interrogators
Author Affiliations +
Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103235C (2017) https://doi.org/10.1117/12.2267504
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
The measurement accuracy of dynamic fiber-optic sensing interrogators, which use frequency scanning to determine the value of the measured, err as either the event bandwidth approaches half the instrument sampling frequency or when the event dynamic range comes close to the instrument designed value. One main source of error is the common practice of assigning sampling at a non-uniform grid to a uniform one. Harmonics higher than -20 dB are observed for signal frequencies exceeding 25% of the sampling rate and/or for signal amplitudes higher than 15% of the instrument dynamic range. These findings have applications to fiber-Bragg-grating and Brillouin interrogators.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rotem R. Preizler, Rotem R. Preizler, R. Davidi, R. Davidi, Avi Motil, Avi Motil, Yakov Botsev, Yakov Botsev, Meir Hahami, Meir Hahami, Moshe Tur, Moshe Tur, } "On the actual bandwidth of some dynamic fiber optic strain/temperature interrogators", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235C (23 April 2017); doi: 10.1117/12.2267504; https://doi.org/10.1117/12.2267504
PROCEEDINGS
4 PAGES


SHARE
Back to Top