A novel distributed fiber-optic vibration sensor is proposed and experimentally demonstrated. The sensor relies on a dual Mach-Zehnder ring interferometric architecture associated to a new coherent detection scheme, borrowed from high bit rate coherent optical communications, which performs a completely passive management of polarization and phase variables of the received optical signal. The proposed solution thus makes feasible the actual in-field applicability of the cost-effectiveness and high sensitivity featured by interferometric sensors. Sensor performance in terms of vibration localization accuracy has been experimentally verified.
Coherent fiber-optic sensor for vibration localization
MOROSI, JACOPO;MATTAREI, MARCO;FERRARIO, MADDALENA;BOFFI, PIERPAOLO;MARTINELLI, MARIO
2014-01-01
Abstract
A novel distributed fiber-optic vibration sensor is proposed and experimentally demonstrated. The sensor relies on a dual Mach-Zehnder ring interferometric architecture associated to a new coherent detection scheme, borrowed from high bit rate coherent optical communications, which performs a completely passive management of polarization and phase variables of the received optical signal. The proposed solution thus makes feasible the actual in-field applicability of the cost-effectiveness and high sensitivity featured by interferometric sensors. Sensor performance in terms of vibration localization accuracy has been experimentally verified.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
