Sweep-free Brillouin time-domain analysis (SF-BOTDA) with improved spatial resolution

Asher Voskoboinik; Alan E. Willner; Moshe Tur

doi:10.1117/12.975061

7 November 2012 Sweep-free Brillouin time-domain analysis (SF-BOTDA) with improved spatial resolution

Asher Voskoboinik, Alan E. Willner, Moshe Tur

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421A1 (2012) https://doi.org/10.1117/12.975061
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Sweep-free Brillouin optical time domain analysis (SF-BOTDA), which uses multi pump and probe tones for a much faster determination of the Brillouin frequency shift, has suffered from a trade-off between the required spatial resolution and the inter-tone frequency spacing. A new implementation of the technique, involving a novel sequencing of the probe signal with respect to the pump multi-tone pulse, together with advanced post-processing, removes this trade-off, allowing the method to achieve spatial resolutions comparable to those of classical BOTDA without sacrificing tone granularity. A spatial resolution of 2m is experimentally demonstrated.

Citation Download Citation

Asher Voskoboinik, Alan E. Willner, and Moshe Tur "Sweep-free Brillouin time-domain analysis (SF-BOTDA) with improved spatial resolution", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421A1 (7 November 2012); https://doi.org/10.1117/12.975061

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