Patent ID: 7792395
Filing Date: 2010-09-07
Classification: G01D,G01P,G02B

Abstract:
1. A fiber optic sensor for detecting acceleration or displacement, the sensor comprising: a fiber optic probe having a transmitting multimode optical fiber and at least one receiving multimode optical fiber, the transmitting fiber and the receiving fiber being substantially parallel to a longitudinal axis of the probe, and a reflective surface spaced apart from the fiber probe, the reflective surface able to move in a direction substantially normal to the longitudinal axis of the fiber optic probe, the reflective surface having an edge extends over at least one of the optical fiber ends, wherein in operation, said transmitting fiber transmits light toward the reflector, said reflector transmits a portion of the light toward the receiving fiber, wherein an amount of light received by the receiving fiber indicates a relative acceleration or a relative displacement of the reflective surface with respect to the fiber probe in the direction of motion of the reflective surface.