Synthetic Spectrum Approach for Brillouin Optical Time-Domain Reflectometry
AbstractWe propose a novel method to improve the spatial resolution of Brillouin optical time-domain reflectometry (BOTDR), referred to as synthetic BOTDR (S-BOTDR), and experimentally verify the resolution improvements. Due to the uncertainty relation between position and frequency, the spatial resolution of a conventional BOTDR system has been limited to about one meter. In S-BOTDR, a synthetic spectrum is obtained by combining four Brillouin spectrums measured with different composite pump lights and different composite low-pass filters. We mathematically show that the resolution limit, in principle, for conventional BOTDR can be surpassed by S-BOTDR and experimentally prove that S-BOTDR attained a 10-cm spatial resolution. To the best of our knowledge, this has never been achieved or reported.
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Nishiguchi, K.; Li, C.-H.; Guzik, A.; Kishida, K. Synthetic Spectrum Approach for Brillouin Optical Time-Domain Reflectometry. Sensors 2014, 14, 4731-4754.
Nishiguchi K, Li C-H, Guzik A, Kishida K. Synthetic Spectrum Approach for Brillouin Optical Time-Domain Reflectometry. Sensors. 2014; 14(3):4731-4754.Chicago/Turabian Style
Nishiguchi, Ken'ichi; Li, Che-Hsien; Guzik, Artur; Kishida, Kinzo. 2014. "Synthetic Spectrum Approach for Brillouin Optical Time-Domain Reflectometry." Sensors 14, no. 3: 4731-4754.