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| Bernard, Pascal; Feron, Romain; Plantier, Guy; Nercessian, Alexandre; Couteau, Julien; Sourice, Anthony; Feuilloy, Mathieu; Cattoen, Michel; Seat, Han‐cheng; Chawah, Patrick; Chéry, Jean; Brunet, Christophe; Boudin, Frédérick; Boyer, Daniel; Gaffet, Stéphane; Geli, Louis; Pelleau, Pascal. |
| We report here the design, performance, and in situ demonstration, on‐land and offshore, of an innovative high‐resolution low‐cost optical (laser) seismometer. The instrument was developed within the Laser Interferometry for Earth Strain project (French Agence Nationale de la Recherche [ANR] program), and first tested at the low‐noise underground laboratory Laboratoire Souterrain à Bas Bruit (LSBB, France). It is based on Fabry–Pérot optical interferometry between the extremity of a probing optical fiber and a reflecting mirror secured to the mobile mass of a passive 2 Hz geophone. The detection technique is based on the wavelength modulation of the laser diode (1310 nm), which allows the separation of the optical power into two signals in quadrature,... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00585/69743/70207.pdf |
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