Drift caused by phase-modulator nonlinearities in fiber gyroscopes

Sidney L. Alessi Carrara

doi:10.1117/12.20305

1 August 1990 Drift caused by phase-modulator nonlinearities in fiber gyroscopes

Sidney L. Alessi Carrara

Proceedings Volume 1267, Fiber Optic Sensors IV; (1990) https://doi.org/10.1117/12.20305
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

Imperfections of a phase modulator driven below the proper modulation frequency of a fiber gyroscope can cause offset of the output signal, limiting long term stability. Bias drift induced by non-linear effects in the phase modulator was studied and altenative ways of stabilizing a short loop length gyro were implemented. Long term drift figures below 0.2°/h rms were achieved in a highly birefringent fiber gyro with a 160 m-long sensing spool.

Citation Download Citation

Sidney L. Alessi Carrara "Drift caused by phase-modulator nonlinearities in fiber gyroscopes", Proc. SPIE 1267, Fiber Optic Sensors IV, (1 August 1990); https://doi.org/10.1117/12.20305

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