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Proceedings Paper

On the actual bandwidth of some dynamic fiber optic strain/temperature interrogators
Author(s): Rotem R. Preizler; R. Davidi; Avi Motil; Yakov Botsev; Meir Hahami; Moshe Tur
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Paper 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.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235C (23 April 2017); doi: 10.1117/12.2267504
Show Author Affiliations
Rotem R. Preizler, Tel Aviv Univ. (Israel)
R. Davidi, Tel Aviv Univ. (Israel)
Avi Motil, Tel Aviv Univ. (Israel)
Yakov Botsev, DSIT Solutions Ltd. (Israel)
Meir Hahami, DSIT Solutions Ltd. (Israel)
Moshe Tur, Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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