Brillouin optical time-domain analysis assisted by second-order Raman amplification
نویسندگان
چکیده
منابع مشابه
Brillouin optical time-domain analysis assisted by second-order Raman amplification.
We propose and experimentally demonstrate a new method to extend the range of Brillouin optical time domain analysis (BOTDA) systems. It exploits the virtual transparency created by second-order Raman pumping in optical fibers. The idea is theoretically analyzed and experimentally demonstrated in a 50 km fiber. By working close to transparency, we also show that the measurement length of the BO...
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In the past few years, Brillouin sensing using either spontaneous or stimulated Brillouin scattering has proven to be an efficient tool for the measurement of physical quantities such as temperature, strain, local birefringence or core dopant concentration along a fiber. The Brillouin effect is the non-linear process showing the lowest threshold; however an increase of the involved optical powe...
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A new technique for the fast implementation of Brillouin Optical Time Domain Analysis (BOTDA) is proposed and demonstrated, carrying the classical BOTDA method to the dynamic sensing domain. By using a digital signal generator which enables fast switching among 100 scanning frequencies, we demonstrate a truly distributed and dynamic measurement of a 100 m long fiber with a sampling rate of ~10 ...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2010
ISSN: 1094-4087
DOI: 10.1364/oe.18.018769