An increase in moisture content within GIS(gas insulated switchgear)can compromise its insulation in-tegrity.To monitor insulation gas humidity inside GIS,a humidity sensor using dual-cone microfibers is developed.Firstly,utilizing beam propagation method(BPM),the optical field of the dual-cone microfibers is simulated to in-vestigate their field distribution and mode interference theory.This analysis reveals the correlation between SF6 and moisture content.Subsequently,the fused biconical taper(FBT)is used to fabricate the dual-cone microfiber hu-midity sensor and conduct humidity sensing experiments.Based on the experimental data,it is determined that the humidity sensor using dual-cone microfibers exhibits a detection sensitivity of-51.75 pm/%RH,enabling continu-ous online monitoring of humidity levels in electrical equipment.
维普
万方数据
