We used polarization crosstalk measurements for fiber optical gyro(FOG) polarization maintaining fiber(PMF) coils winding process monitoring,raw PMF quality inspection,overall PMF coils inspection,and temperature induced stress determination.The raw fiber inspection can effectively eliminate the effects of fiber defects on the fiber coils.The on-line winding monitoring can effectively detect winding defects,control the winding tensions,mark important winding positions,and improve winding process.Finally,fro...