Scholarly
    Communications Project


Document Type:Master's Thesis
Name:Jaydeep Ranade
Email address:jranade@vt.edu
URN:1997/00190
Title:Electronic Signal Processing in an Optical Fiber-Based Magnetometer
Degree:Master of Science
Department:Electrical Engineering
Committee Chair: Dr. Anbo Wang
Chair's email:awang@vt.edu
Committee Members:
Keywords:Optic fiber, Magnetic field measurement
Date of defense:September 11, 1997
Availability:Release the entire work immediately worldwide.

Abstract:

Conventional Extrinsic Fabry-Perot Interferometric (EFPI) sensors have been used to measure a variety of physical parameters like temperature, pressure and strain. A modified version of this geometry is successfully implemented to measure low-level magnetic field densities. A complete optical fiber based magnetometer system consisting of sensor head, laser source, opto-electronics, signal demodulation circuitry and display is designed, fabricated and tested. Various electronic signal demodulation schemes are discussed. The Quadrature Phase Shifted EFPI signal demodulation scheme, used in the system, is studied in detail. The scheme is designed and implemented in both analog and digital domain and the advantages and drawbacks of each type are presented. Primary limitations in the measurement of extremely low-level magnetic field densities are discussed and methods to overcome them using electronic signal processing schemes are suggested for future consideration.

List of Attached Files

Abstract.pdf Acknowl.pdf Appendix.pdf
Ch1.pdf Ch2.pdf Ch3.pdf
Ch4.pdf Ch5.pdf Ch6.pdf
Contents.pdf Etd.pdf Figlist.pdf
Referenc.pdf Snap1.pdf Snap2.pdf
Snap3.pdf Snap4.pdf Title.pdf
Vita.pdf


The author grants to Virginia Tech or its agents the right to archive and display their thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. The author retains all proprietary rights, such as patent rights. The author also retains the right to use in future works (such as articles or books) all or part of this thesis or dissertation.