ANALYSIS of INTERFERENCE PATTERN of the FIBER INTERFEROMETER as a MOTION SENCOR

Duraid H.  Ahmed; Fathi M.  Jasim; Musab S.  Mohammed

doi:10.24996/ijs.2020.61.12.10

Authors

Duraid H. Ahmed Department of Science, College of Basic Education, University of Mosul, Iraq
Fathi M. Jasim Department of Physics, College of Education for pure science, University of Mosul, Iraq
Musab S. Mohammed Department of Physics, College of Education for pure science, University of Mosul, Iraq

DOI:

https://doi.org/10.24996/ijs.2020.61.12.10

Keywords:

Optical Interferometer, Laser Doppler Velocimetry, Fiber optic Sensor, Heterodyne detection system

Abstract

The production and analysis of an optimal interference pattern for the optical fiber interferometer of a 193.1THz continuous laser source was simulated by comparing the spectral spectroscopy of the two arms of interferometer to be used as a heterodyne detection in sensing the body range, speed, and direction of movement by delaying the time between the arms.

The study showed that the fringe pattern can be sensed a range by the free spectral range FSR and the velocity by the fringe separation FS and the direction by the fringe spatial frequency FSF.