Linearized Fiber Optic Sensor Readout

Joel G. Hanse; Gordon Mitchell

doi:10.1117/12.7973284

1 June 1984 Linearized Fiber Optic Sensor Readout

Joel G. Hanse, Gordon Mitchell

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Optical Engineering, Vol. 23, Issue 3, (June 1984). https://doi.org/10.1117/12.7973284

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.

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Joel G. Hanse and Gordon Mitchell "Linearized Fiber Optic Sensor Readout," Optical Engineering 23(3), (1 June 1984). https://doi.org/10.1117/12.7973284

Published: 1 June 1984

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