Abstract
The coupling of light waves travelling clockwise and counterclockwise along an optical ring due to a back-scattering element is studied. An asymmetric mode splitting occurs as a consequence of the discontinuity suffered by the waves at the scattering point. The mode splitting shows up in an interference pattern and lends itself to an experimental verification.
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To allow for injection of light, the cavity would necessarily be leaky and its resonances would have finite width. We assume here that losses affect all modes the same way and produce no coupling between [cf. [2]].
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Venugopalan, A., Kumar, D. & Ghosh, R. Optical mode-coupling in a ring due to a back-scatterer. Pramana - J. Phys. 40, 107–112 (1993). https://doi.org/10.1007/BF02847289
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DOI: https://doi.org/10.1007/BF02847289