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 7 kHz/(deg s⁻¹) for a 0.79 m² single-coil ring gyroscope, which was in agreement with the calculated scale factor value. The gyroscope dead band with an upper limit of  ≈5.15 deg s⁻¹ corresponding to the lowest beat-note frequency of  ≈15 kHz was detected during clockwise rotation of the turntable. The highest gyroscope resolution of R ~ 0.01 deg s⁻¹  =  38 deg h⁻¹ was estimated on the basis of bias point drift measurements. [ABSTRACT FROM AUTHOR]