A vibration sensor, using telecommunication grade monomode fiber, immune to temperature variations

F. Pigeon , S. Pelissier , A. Mure-Ravaud , H. Gagnaire , S. I. Hosain , C. Veillas

A polarimetric fiber-optic vibration sensor immune to temperature variations is realized by forming coils using a standard single-mode fiber. The phase drift due to the linear birefringence changes induced by a modification of the environmental temperature is balanced by a feedback compression of a non vibrating coil. Experimental results show that without the feedback system the sensitivity to temperature is equal to 2%/°C. The compensated device has a maximum 10% relative variation of the output signal over a 30-55 °C range. This method is easy to implement on polarimetric sensors over any range of temperature.

Domaines: Articles anciens

F. Pigeon, S. Pelissier, A. Mure-Ravaud, H. Gagnaire, S. I. Hosain, et al.. A vibration sensor, using telecommunication grade monomode fiber, immune to temperature variations. Journal de Physique III, 1993, 3 (9), pp.1835-1838. ⟨10.1051/jp3:1993243⟩. ⟨jpa-00249046⟩