Title page for ETD etd-04072009-040430

Type of Document Master's Thesis
Author Jacobson, Carl P.
URN etd-04072009-040430
Title Temperature corrected strain measurements using optical time domain reflectometry
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Claus, Richard O. Committee Chair
Jacobs, Ira Committee Member
Poon, Ting-Chung Committee Member
  • Optical fibers
Date of Defense 1990-05-12
Availability restricted

A method of using optical fiber to measure strain and correct for the effects of temperature is proposed. A means of measuring apparent strain is given, pure temperature is measured using Fresnel-backscatter based Optical Time Domain Reflectametry, and a method for combining the two measurements to obtain a measurement of mechanically-induced strain alone is developed. The background, theory and experimental results that demonstrate the feasibility of such a system are presented and the results are compared with the performance of existing fiber-based means of measuring temperature. Experiments on several OTDR-addressed, intensity-based optical temperature sensors are performed and a method for manufacturing small air gap splices for use in measuring strain at several places along an optical fiber are presented.

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