Journal
OPTICS EXPRESS
Volume 18, Issue 10, Pages 9747-9754Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.009747
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Funding
- Ministry of Education & Science Technology [KRISS-10-011-131]
- Ministry of Education, Science & Technology (MoST), Republic of Korea [gist-15] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A novel method for auto-correction of fiber optic distributed temperature sensor using anti-Stokes Raman back-scattering and its reflected signal is presented. This method processes two parts of measured signal. One part is the normal back scattered anti-Stokes signal and the other part is the reflected signal which eliminate not only the effect of local losses due to the micro-bending or damages on fiber but also the differential attenuation. Because the beams of the same wavelength are used to cancel out the local variance in transmission medium there is no differential attenuation inherently. The auto correction concept was verified by the bending experiment on different bending points. (C) 2010 Optical Society of America
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