Orthogonal coding-based spatial channel switching: breaking the dimensionality barrier in optical multiplexing systems.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-07-01 DOI:10.1364/OL.561028

Weihang Zhong, Lixun Wu, Zituo Wu, Zhouxin Liang, Zhongzheng Lin, Yujie Chen

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引用次数: 0

Abstract

In multi-channel wavelength-division multiplexing (WDM) and space-division multiplexing (SDM) optical communication systems, spatial channel-switching devices play a critical role. Here, we propose an optical orthogonal coding (OC) mode construction method based on phase-gradient coding and establish a mapping with dispersed spatial channels of a fiber array to develop a spatial channel-switching device. The device consists of a multi-channel fiber array, a mode converter, and a channel-switching plane. We experimentally demonstrate a bidirectional mode converter that consists of five phase masks, enabling the switching of seven spatial channels with seven corresponding switching phase distributions. The orthogonal coding-based channel-switching devices eliminate the need for phase adjustments in predetermined spatial regions and simplify the operational complexity of the channel-switching process. This work paves the way for the simultaneous enhancement of channel scalability and system performance, thereby providing a viable pathway to overcome the dimensionality barrier in optical multiplexing systems.

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基于正交编码的空间信道交换：打破光复用系统中的维数障碍。

在多通道波分复用（WDM）和空分复用（SDM）光通信系统中，空间信道交换器件起着至关重要的作用。本文提出了一种基于相位梯度编码的光正交编码（OC）模式构建方法，并与光纤阵列的分散空间信道建立映射，开发了一种空间信道交换器件。该器件由多通道光纤阵列、模式转换器和通道交换平面组成。我们通过实验证明了一个由五个相位掩模组成的双向模式转换器，可以在七个相应的开关相位分布下切换七个空间通道。基于正交编码的信道开关器件消除了在预定空间区域进行相位调整的需要，简化了信道开关过程的操作复杂性。这项工作为同时增强信道可扩展性和系统性能铺平了道路，从而为克服光复用系统中的维度障碍提供了一条可行的途径。

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

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.