Colliding-pulse hybridly mode-locked erbium-doped all-fiber soliton gyrolaser

We report a study on the gyroscopic effect in a bidirectional ultra-short pulse erbium-doped all-fiber ring soliton laser hybridly mode-locked with co-action of single-walled carbon nanotubes and nonlinear polarization evolution introduced by a short-segment polarizing fiber. We directly compare two gyroscopes with different scale factor values and coil numbers by studying important gyroscopic characteristics such as rotation sensitivity, dead bandwidth and beat-note frequency stability. The detected angular velocity ranged from 0.12 deg s(-1) to 360 deg s(-1), while the highest rotation sensitivity reached 7kHz/(deg s(-1)) for a 0.79 m(2) single-coil ring gyroscope, which was in agreement with the calculated scale factor value. The gyroscope dead band with an upper limit of approximate to 5.15 deg s(-1) corresponding to the lowest beat-note frequency of approximate to 15 kHz was detected during clockwise rotation of the turntable. The highest gyroscope resolution of R similar to 0.01 deg s(-1)= 38 deg h(-1) was estimated on the basis of bias point drift measurements.