Synthesis of virtual Brillouin frequency shift profiles in BOTDA sensors using optical source dithering
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- MICINN//TEC2010-20224-C02-01/ES/
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We demonstrate a novel concept for Brillouin optical time domain analysis sensors that is based on synthesizing a virtual Brillouin frequency shift profile along the sensing fiber. The technique is based on modulating the wavelength of the optical source with a periodic waveform that is synchronized to the pump pulse. Application of this new tool to the compensation of non local effects and Brillouin induced noise in distributed sensors is experimentally demonstrated.
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