title: Limitation of rotation sensing by scattering.
abstract: There appear to be limitations in the operation of optical-fiber Sagnac gyro rotation sensors that have imposed a minimum measurable rotation rate that is much higher than that caused by quantum noise. We show that one source of limitation, namely, the superposition of a nonreciprocal pair of waves generated by backward scattering from the incident waves, can result in significant error but can be mitigated by appropriate system design and signal modulation.
authors.affiliation: Edward L. Ginzton Laboratory, W. W. Hansen Laboratories of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: C C
authors.initials: CC
authors.lastname: Cutler
authors.forename: S A
authors.initials: SA
authors.lastname: Newton
authors.forename: H J
authors.initials: HJ
authors.lastname: Shaw