A new type optical fiber vibration-sensor

Author

Kimura, Mitsuteru ; Toshima, Katsuhisa

Author_Institution

Fac. of Eng., Tohoku Gakuin Univ., Tagajo, Japan

Volume

2

fYear

1997

fDate

16-19 Jun 1997

Firstpage

1225

Abstract

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 proposed and demonstrated. Nearly flat frequency dependence of the optical output was obtained in the frequency range between 40 and 1200 Hz under constant acceleration. Resolution (or equivalent noise level) of 0.3 m/s² is attained in this prototype device. Multimode vibrations are analyzed by FFT analysis of optical signals output from this vibration-sensor

Keywords

fast Fourier transforms; fibre optic sensors; lenses; micromachining; optical collimators; optical design techniques; optical fibre fabrication; optical information processing; optical noise; vibration measurement; 40 to 1200 Hz; FFT analysis; Si micro-fabrication technique; bulb-lens design; constant acceleration; emitted light collimation; equivalent noise level; frequency range; multimode vibrations; nearly flat frequency dependence; optical fiber vibration-sensor; optical output; optical signals output; resolution; Frequency dependence; Optical collimators; Optical design; Optical fiber sensors; Optical fibers; Optical noise; Optical sensors; Signal analysis; Silicon; Stimulated emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-3829-4

Type

conf

DOI

10.1109/SENSOR.1997.635445

Filename

635445