Speckle backpropagation for compensation of nonlinear effects in few-mode optical fibers

IF 3.3 2区物理与天体物理 Q2 OPTICS

Chinese Optics Letters Pub Date : 2023-01-01 DOI:10.3788/col202321.030601

P. Anisimov, E. Tsyplakov, V. Zemlyakov, Jiexing Gao

引用次数: 0

Abstract

We propose an alternative approach to compensation of intermodal interactions in few-mode optical fibers by means of digital backpropagation. Instead of solving the inverse generalized multimode nonlinear Schrödinger equation, we accom-plish 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 linearly polarized (LP) modes of a step-index fiber.

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低模光纤中补偿非线性效应的散斑反向传播

我们提出了一种通过数字反向传播来补偿少模光纤中多模相互作用的替代方法。我们不需要求解逆广义多模非线性Schrödinger方程，而是利用相机捕获的近场强度分布来完成多模信号的反向传播。我们证明了这个任务可以通过深度神经网络成功地处理，并通过训练一个自编码器来反向传播阶跃折射率光纤的六个线性偏振(LP)模式，提供了概念证明。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Optics Letters 物理-光学

CiteScore

5.60

自引率

20.00%

发文量

180

审稿时长

2.3 months

期刊介绍： Chinese Optics Letters (COL) is an international journal aimed at the rapid dissemination of latest, important discoveries and inventions in all branches of optical science and technology. It is considered to be one of the most important journals in optics in China. It is collected by The Optical Society (OSA) Publishing Digital Library and also indexed by Science Citation Index (SCI), Engineering Index (EI), etc. COL is distinguished by its short review period (~30 days) and publication period (~100 days). With its debut in January 2003, COL is published monthly by Chinese Laser Press, and distributed by OSA outside of Chinese Mainland.