000264851 001__ 264851
000264851 005__ 20190318134531.0
000264851 0247_ $$2doi$$a10.1109/JLT.2019.2904756
000264851 02470 $$2DOI$$a10.1109/JLT.2019.2904756
000264851 037__ $$aARTICLE
000264851 245__ $$aDistributed hydrostatic pressure measurement using phase OTDR in a highly birefringent photonic crystal fiber
000264851 260__ $$c2019-03-13
000264851 269__ $$a2019-03-13
000264851 336__ $$aJournal Articles
000264851 500__ $$aEarly access, final pages allocated later.
000264851 520__ $$aAlthough distributed fiber-optic sensing of axial strain and temperature is a well-established technique, there are almost no demonstrations of distributed hydrostatic pressure sensing. The main obstacle for such measurements is the low sensitivity to pressure of standard optical fibers. Structured fibers, such as photonic crystal fibers can be made pressure-sensitive by means of an optimized arrangement of their internal microstructure. In this paper, we demonstrate - for the first time to our knowledge - distributed birefringence and hydrostatic pressure measurements based on phase sensitive optical time-domain reflectometry (OTDR) in highly birefringent photonic crystal fibers. We study the response to hydrostatic pressure of two dedicated pressure-sensitive photonic crystal fibers in the range from ∼0.8 bar to ∼67 bar with a 5 cm spatial resolution using a phase-OTDR approach. We find differential pressure sensitivities between the slow and fast polarization axes of the studied fibers of -219 MHz/bar and -95.4 MHz/bar. These values are ∼3.8 to ∼8.8 times larger than those demonstrated previously in distributed pressure measurements with other photonic crystal fibers.
000264851 6531_ $$aBirefringence
000264851 6531_ $$aMicrostructured optical fibers
000264851 6531_ $$aOptical fiber sensors
000264851 6531_ $$aPressure sensors
000264851 6531_ $$aRayleigh scattering
000264851 6531_ $$aReflectometry
000264851 700__ $$aMikhailov, Sergei
000264851 700__ $$aZhang, Li
000264851 700__ $$aGeernaert, Thomas
000264851 700__ $$aBerghmans, Francis
000264851 700__ $$aThevenaz, Luc
000264851 773__ $$q1-1$$tJournal of Lightwave Technology
000264851 8560_ $$fluc.thevenaz@epfl.ch
000264851 8564_ $$s8428197$$uhttps://infoscience.epfl.ch/record/264851/files/JLT-08666740.pdf
000264851 909C0 $$0252591$$mzhisheng.yang@epfl.ch$$mkenny.heytow@epfl.ch$$mluc.thevenaz@epfl.ch$$pSCI-STI-LT$$xU12146$$zMarselli, Béatrice
000264851 909CO $$ooai:infoscience.epfl.ch:264851$$particle$$pSTI
000264851 960__ $$aluc.thevenaz@epfl.ch
000264851 961__ $$apierre.devaud@epfl.ch
000264851 973__ $$aEPFL$$rREVIEWED$$sACCEPTED
000264851 980__ $$aARTICLE
000264851 981__ $$aoverwrite