000187408 001__ 187408
000187408 005__ 20180913061934.0
000187408 0247_ $$2doi$$a10.1364/OE.21.016390
000187408 022__ $$a1094-4087
000187408 02470 $$2ISI$$a000321819400018
000187408 037__ $$aARTICLE
000187408 245__ $$aBipolar optical pulse coding for performance enhancement in BOTDA sensors
000187408 269__ $$a2013
000187408 260__ $$aWashington$$bOptical Society of America$$c2013
000187408 300__ $$a8
000187408 336__ $$aJournal Articles
000187408 520__ $$aA pump signal based on bipolar pulse coding and single-sideband suppressed-carried (SSB-SC) modulation is proposed for Brillouin optical time-domain analysis (BOTDA) sensors. Making a sequential use of the Brillouin gain and loss spectra, the technique is experimentally validated using bipolar complementary-correlation Golay codes along a 100 km-long fiber and 2 m spatial resolution, fully resolving a 2 m hot-spot at the end of the sensing fiber with no distortion introduced by the decoding algorithm. Experimental results, in good agreement with the theory, indicate that bipolar Golay codes provide a higher signal-to-noise ratio enhancement and stronger robustness to pump depletion in comparison to optimum unipolar pulse codes known for BOTDA sensing.
000187408 700__ $$aSoto, Marcelo A.
000187408 700__ $$aLe Floch, Sébastien
000187408 700__ $$0240503$$aThévenaz, Luc$$g106544
000187408 773__ $$j21$$k14$$q16390$$tOptics Express
000187408 8564_ $$s1276864$$uhttps://infoscience.epfl.ch/record/187408/files/oe-21-14-16390.pdf$$yPublisher's version$$zPublisher's version
000187408 909C0 $$0252591$$pSCI-STI-LT$$xU12146
000187408 909CO $$ooai:infoscience.tind.io:187408$$pSTI$$particle
000187408 917Z8 $$x195294
000187408 917Z8 $$x195294
000187408 937__ $$aEPFL-ARTICLE-187408
000187408 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000187408 980__ $$aARTICLE