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<datestamp>2018-01-11</datestamp>
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<title lang=en>Dual-modulation fiber Fabry-Perot interferometer with double reflection for slowly-varying displacements</title>
<creator>Seat, H. C.</creator>
<creator>CHAWAH, Patrick</creator>
<creator>Cattoen, M.</creator>
<creator>Sourice, A.</creator>
<creator>Plantier, G.</creator>
<creator>BOUDIN, Federick</creator>
<creator>Chery, Jean</creator>
<creator>Brunet, C.</creator>
<creator>Bernard, P.</creator>
<creator>Suleiman, M.</creator>
<contributor>Risques ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<source>ISSN: 0146-9592</source>
<source>EISSN: 1539-4794</source>
<source>Optics Letters</source>
<publisher>Optical Society of America</publisher>
<identifier>hal-00758140</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00758140</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00758140</source>
<source>Optics Letters, Optical Society of America, 2012, 37 (14), pp.2886-2888. 〈10.1364/OL.37.002886〉</source>
<identifier>DOI : 10.1364/OL.37.002886</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1364/OL.37.002886</relation>
<language>en</language>
<subject>[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>This Letter describes a dual-amplitude modulation technique incorporated into a double reflection extrinsic-type fiber Fabry-Perot interferometer to measure periodic, nonperiodic as well as quasi-static displacements. The modulation scheme simultaneously maintains the interference signal pair in quadrature and provides a reference signal for displacements inferior to a quarter of the source wavelength. The control and phase demodulation of the interferometer carried out via software enable quasi-real-time measurement and facilitates sensor alignment. The sensor system can be exploited in the low frequency range from 10−3 to ∼500 Hz and has a resolution better than 2.2 nm, targeting applications in geophysics.</description>
<date>2012-07-15</date>
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