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Optical measuring device, in which the sagnac - effect is evaluated
Optical measuring device, in which the sagnac - effect is evaluated
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机译：光学测量装置，可评估垂荡效应
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摘要
In a reciprocal architecture fibre optic gyroscope, a single mode filter P is used to reduce bias drift resulting from changing birefringence of the sensor optical fibre coil F. A birefringent element BSMG is provided in the vicinity of the filter P and has a dispersion which exceeds the coherence length of the source S. This reduces unwanted bias and thus significantly relaxes the requirements for extinction of the mode filter P. IMAGE
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