Fiber Optics in Curved Space-Times: Effects of Lapse and Shift
Date: June 2, 2023Time: 13:00 CEST
Event: Gravitational Physics Seminar at the University of Vienna
Location: Vienna, Austria
Abstract: Previous theoretical models of fiber optics in gravitational fields were limited to specific fiber geometries. Using a recently-developed multiple-scales method, however, one can solve Maxwell’s equations for arbitrarily bent optical fibers in arbitrary stationary space-times, provided that the characteristic length scales of the fiber geometry and the gravitational field far exceed the optical wavelength. The focus of this talk is on two key effects relevant to the future GRAVITES experiment: the gravitational redshift and the Sagnac effect, which are derived from the lapse and the tangential shift, respectively. Further corrections arising, e.g., from spatial curvature, shall be discussed briefly if time permits.
Relevant publications: