Real-time fast and distributed measurement of a Brillouin-inhomogeneous fiber using tailored-frequency probe in slope-assisted BOTDA

Orr Danon; Avi Motil; Ido Sovran; Raanan Hadar; Moshe Tur

doi:10.1117/12.2059571

2 June 2014 Real-time fast and distributed measurement of a Brillouin-inhomogeneous fiber using tailored-frequency probe in slope-assisted BOTDA

Orr Danon, Avi Motil, Ido Sovran, Raanan Hadar, Moshe Tur

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 9157AM (2014) https://doi.org/10.1117/12.2059571
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

Using a tailored-frequency probe, this paper presents a distributed slope-assisted BOTDA (SA-BOTDA) measurement of an optical fiber, bonded to a bent cantilever, where the fiber's static Brillouin Frequency Shift continuously varies along its length by an amount of the order of or larger than the Brillouin bandwidth. While standard SA-BOTDA methods, employing a fixed probe frequency, may suffer from distortions in measuring vibrations around this Brillouininhomogeneous static state, a tailored probe preserves the full dynamic range offered by the slope of Brillouin gain spectrum. The computerized measurement system is capable of real-time continuous monitoring of the strain, including averaging.

Citation Download Citation

Orr Danon, Avi Motil, Ido Sovran, Raanan Hadar, and Moshe Tur "Real-time fast and distributed measurement of a Brillouin-inhomogeneous fiber using tailored-frequency probe in slope-assisted BOTDA", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157AM (2 June 2014); https://doi.org/10.1117/12.2059571

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