Chinese Optics Letters, Volume. 21, Issue 3, (2023)

Speckle back-propagation for compensation of nonlinear effects in few-mode optical fibers [Early Posting]

Anisimov Pavel, Tsyplakov Evgenii, Zemlyakov Viacheslav, Gao Jiexing
Author Affiliations
  • Huawei Technologies Co Ltd
  • show less

    We propose an alternative approach to compensation of intermodal interactions in few-mode optical fibers by means of digital back-propagation. Instead of solving the inverse generalized multimode nonlinear Schrödinger equation, we accomplish backpropagation of the multimode signals with help of their near-field intensity distributions captured by a camera. We demonstrate that this task can successfully be handled by a deep neural network and provide a proof of concept by training an autoencoder for backpropagation of six LP modes of a step index fiber.

    Paper Information

    Manuscript Accepted: Sep. 20, 2022

    Posted: Sep. 21, 2022

    DOI: 10.3788/COL202321.030601