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Proceedings Paper

Measurement of nonlinear effects in fiber optic gyroscopes with different light sources
Author(s): Christian Seidel; Gert F. Trommer
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Paper Abstract

The nonlinear effect in a fiber-optic gyroscope has been measured with a single mode laser diode, a multi mode laser diode with an erbium-doped fiber amplifier and an erbium-doped fiber source. The experimental results confirm the estimations obtained from our improved theoretical treatment. The predicted dependency on the number of spectral lines and their power has been observed. The maximum phase error per power difference in the sensing coil is 1.3 μrad/μW corresponding to a rotation rate error of 0.3(°/h)/μW. The use of the multi mode laser diode reduces the errors by a factor of 5 according to its spectral shape. For the broadband erbium-doped fiber source the effect is zero within the error ranges. These theoretical and experimental results contradict predicted nonlinear gyro errors derived in literature.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566720
Show Author Affiliations
Christian Seidel, Univ. of Karlsruhe (Germany)
Gert F. Trommer, Univ. of Karlsruhe (Germany)

Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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