Measurement of nonlinear effects in fiber optic gyroscopes with different light sources

Christian Seidel; Gert F. Trommer

doi:10.1117/12.566720

9 June 2004 Measurement of nonlinear effects in fiber optic gyroscopes with different light sources

Christian Seidel, Gert F. Trommer

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566720
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

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.

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Christian Seidel and Gert F. Trommer "Measurement of nonlinear effects in fiber optic gyroscopes with different light sources", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566720

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KEYWORDS

Semiconductor lasers

Light sources

Chemical oxygen iodine lasers

Gyroscopes

Fiber optic gyroscopes

Fiber optics

Fiber optics tests

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