14 October 2009 Measurement range enlargement in Brillouin optical correlation-domain reflectometry based on double-modulation scheme
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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75037X (2009) https://doi.org/10.1117/12.848688
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom
Abstract
We have demonstrated a double-modulation scheme to enlarge the measurement range of Brillouin optical correlationdomain reflectometry (BOCDR) for fiber-optic distributed strain sensing. In this scheme, the frequency of the laser output is simultaneously modulated with two different frequencies. A resolution of 27 cm was achieved with 1.5-km measurement range when a noise-floor compensation technique was used.
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Yosuke Mizuno, Yosuke Mizuno, Zuyuan He, Zuyuan He, Kazuo Hotate, Kazuo Hotate, "Measurement range enlargement in Brillouin optical correlation-domain reflectometry based on double-modulation scheme", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75037X (14 October 2009); doi: 10.1117/12.848688; https://doi.org/10.1117/12.848688
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