Few millimeter-resolution Brillouin optical correlation domain analysis using amplified-spontaneous-emission pump and signal waves

Raphael Cohen; Yosef London; Yair Antman; Avi Zadok

doi:10.1117/12.2059362

2 June 2014 Few millimeter-resolution Brillouin optical correlation domain analysis using amplified-spontaneous-emission pump and signal waves

Raphael Cohen, Yosef London, Yair Antman, Avi Zadok

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91576B (2014) https://doi.org/10.1117/12.2059362
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A new technique for Brillouin optical correlation domain analysis is proposed and demonstrated, in which the pump and signal waves are drawn from the filtered amplified spontaneous emission of an erbium-doped fiber amplifier. An estimated spatial resolution of 3.3 mm is obtained using a 33 GHz-wide source. The reconstruction of the Brillouin gain line and the recognition of a localized hot spot are demonstrated in a proof-of-concept experiment. Unlike phase-coded correlation domain analysis methods, the proposed scheme is not restricted by the bandwidth of available electro-optic modulators or pattern generators. Resolution is scalable to less than one millimeter.

Citation Download Citation

Raphael Cohen, Yosef London, Yair Antman, and Avi Zadok "Few millimeter-resolution Brillouin optical correlation domain analysis using amplified-spontaneous-emission pump and signal waves", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91576B (2 June 2014); https://doi.org/10.1117/12.2059362

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