Optical Fiber Spool with Ultralow Acceleration Sensitivity

Excess frequency noise induced by mechanical vibration is a major noise source at low Fourier frequencies in fiber-stabilized lasers. To resolve this problem, we propose a vibration insensitive fiber spool using double-winding structure. This kind of fiber spool features low vibration sensitivity in all spatial directions. Both the measured axial and radial vibration sensitivity are below 1.0 × 10
^-11
/g.