2 June 2014 Simplified Brillouin optical time-domain analysis with extended measurement range by frequency dithering
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91576I (2014) https://doi.org/10.1117/12.2059457
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
We demonstrate a simplified Brillouin optical-time domain analysis system based on direct current modulation of a laser diode with an extended measurement range and an enhanced spatial resolution. Slow and periodic frequency dithering is additionally applied to the laser diode to suppress the noise originated from coherent Rayleigh scattering. The distribution of Brillouin gain spectra along a 25 km fiber is successfully measured with a 1 m spatial resolution and an accuracy of σ = 0.78 MHz, confirming its high practicality as a cost-effective solution.
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Jun Gi Hong, Jun Gi Hong, Kwang Yong Song, Kwang Yong Song, } "Simplified Brillouin optical time-domain analysis with extended measurement range by frequency dithering", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91576I (2 June 2014); doi: 10.1117/12.2059457; https://doi.org/10.1117/12.2059457
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