A new type optical fiber vibration-sensor

M. Kimura, K. Toshima
Proceedings of International Solid State Sensors and Actuators Conference (Transducers '97)  
A new design of bulb-lens for emitted light collimation is proposed and demonstrated, and a vibration-sensor as an optical fiber sensor combined with an optical fiber with the bulb-lens for vibration and the silicon micro-fabrication technique, is also propased and demonstrated. Nearly flat frequency dependence of the optical output was obtained in the frequency range between observed 40 and 1200 Hz under the constant acceleration. Resolution (or equivalent noise level) of 0.3 m/s2 is attained
more » ... 3 m/s2 is attained in this prototype device. Vibrations with many modes in a vibrator are analyzed by FFT analysis of optical signals output from this vibration-sensor.
doi:10.1109/sensor.1997.635445 fatcat:ldkwegdyvzecboj6ndhmdepwry