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Optical Engineering

Linearized Fiber Optic Sensor Readout
Author(s): Joel G. Hanse; Gordon Mitchell
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Paper Abstract

Interferometric sensors traditionally have been limited by their non-linear input-output characteristics. This paper presents a method for output linearization using four interferometer outputs corresponding to ±sin ct and ±coscp, where 4 is the relative phase of interferometer legs. These outputs are combined in an arctangent algorithm to extract (/). Applications to both Mach-Zehnder and Sagnac interferometers are discussed, with experimental data from a fiber gyro presented. The data taken over a 47r range of 4 demonstrate linearity and stability of the algorithm.

Paper Details

Date Published: 1 June 1984
PDF: 3 pages
Opt. Eng. 23(3) 233309 doi: 10.1117/12.7973284
Published in: Optical Engineering Volume 23, Issue 3
Show Author Affiliations
Joel G. Hanse, Honeywell Incorporated (United States)
Gordon Mitchell, Honeywell Incorporated (United States)


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