Special Section on Fiber Lasers and Applications

Brillouin optical spatial Fourier domain analyzer

[+] Author Affiliations
Sagie Asraf

Bar Ilan University, Faculty of Engineering, Ramat Gan 52900, Israel

Amihai Meiri

Bar Ilan University, Faculty of Engineering, Ramat Gan 52900, Israel

Jonathan Lubat

Bar Ilan University, Faculty of Engineering, Ramat Gan 52900, Israel

Amir Shemer

Bar Ilan University, Faculty of Engineering, Ramat Gan 52900, Israel

Zeev Zalevsky

Bar Ilan University, Faculty of Engineering, Ramat Gan 52900, Israel

Opt. Eng. 54(1), 011009 (Dec 22, 2014). doi:10.1117/1.OE.54.1.011009
History: Received June 24, 2014; Accepted November 13, 2014
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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.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Sagie Asraf ; Amihai Meiri ; Jonathan Lubat ; Amir Shemer and Zeev Zalevsky
"Brillouin optical spatial Fourier domain analyzer", Opt. Eng. 54(1), 011009 (Dec 22, 2014). ; http://dx.doi.org/10.1117/1.OE.54.1.011009


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