New publication appeared in Classical and Quantum Gravity

14.11.2018

Our publication on “Weakly gravitating isotropic waveguides” appeared in Classical and Quantum Gravity.

We analyse the effect of post-Newtonian gravitational fields on propagation of light in a cylindrical waveguide in both a straight configuration and a spool configuration. We derive an equation for the dependence of the wave vector upon the vertical location of the waveguide. It is shown that the gravitational field produces a small shift in the wave vector, which we determine, while the spooling creates additional modes which could perhaps be measurable in future accurate experiments.

 

View full text: here.

Classical and Quantum Gravity 35/24 (November 2018).

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Figure 1. Schematic for two different geometries that are used to analyse the effect of post-Newtonian gravitational fields on light propagating in cylindrical waveguides. (a) In a straight, isotropic single-mode fiber within a constant gravitational potential, a change in the wave vector as a function of the height (δh) of the fiber above a reference level is to be expected. (b) For a fiber in a spool configuration with diameter ds, additional modes are created when subject to a non-uniform gravitational potential.