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Optical Engineering

Brillouin optical spatial Fourier domain analyzer
Author(s): Sagie Asraf; Amihai Meiri; Jonathan Lubat; Amir Shemer; Zeev Zalevsky
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Paper Abstract

We propose an approach to Brillouin optical frequency domain analysis for measuring temperature or strain along an optical fiber. In this approach, we modulate the pump by a cosine function over a range of frequencies. By measuring only the probe power at the edge of the fiber for each modulation frequency, we obtain the cosine transform of the Brillouin gain coefficient of the fiber. We describe the operation principle of the proposed method, introduce additional advantages of the frequency domain analysis, such as compressed representation of the spatial information and better field of view, and use simulations and experimental work to demonstrate the capabilities of the proposed technique.

Paper Details

Date Published: 22 December 2014
PDF: 7 pages
Opt. Eng. 54(1) 011009 doi: 10.1117/1.OE.54.1.011009
Published in: Optical Engineering Volume 54, Issue 1
Show Author Affiliations
Sagie Asraf, Bar-Ilan Univ. (Israel)
Amihai Meiri, Bar-Ilan Univ. (Israel)
Jonathan Lubat, Bar-Ilan Univ. (Israel)
Amir Shemer, Bar-Ilan Univ. (Israel)
Zeev Zalevsky, Bar-Ilan Univ. (Israel)

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