Abstract
The prior art of the ultrafast laser gyroscopes goes back to 1981 when R.L. Fork et. al demonstrated colliding-pulse mode-locking [1] and the further discovery of the temporal overlapping of these pulses in 1990 [2]. Direct rotation measurements using laser gyroscopes are known to be more precise compared to the passive fibre optic devices, where the relative phase shift between the beams is retrieved from their interference after propagating in external passive fibre interferometer [3]. The principal limitation of the laser gyroscope sensitivity is the frequency lock-in effect, caused by residual backscattering in the cavity [4]. Ultrafast laser gyroscopes circumvent this effect since the counter-propagating ultrashort pulses interact only in two positions in the cavity and backscattering is reduced by the ultrashort width of the pulse. Here, we present an all-fibre implementation of the ultrafast laser gyroscope, and further propose measuring the gyroscopic shift in the time domain, which results in an order of magnitude improvement in the sensitivity over conventional mode-locked laser gyroscope.
© 2017 IEEE
PDF ArticleMore Like This
Maria Chernysheva, Srikanth Sugavanam, and Dmitri Churkin
CJ_P_39 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2017
Chengbo Mou, Aleksey Rozhin, Sergey Sergeyev, and Sergei Turistyn
JSII2_1 European Quantum Electronics Conference (EQEC) 2011
Igor Kudelin, Srikanth Sugavanam, and Maria Chernysheva
STu3L.7 CLEO: Science and Innovations (CLEO:S&I) 2019