A Programmable High-Precision Real-Time Optical Beamforming Network Based on Galois Field

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-03-26 DOI:10.1109/LPT.2025.3554773

Jiehua Zhou;Yan Ding;Zhuo Yin;Xiaoyang Chen;Xiao Ma;Long Xiao;Cheng Lei

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引用次数: 0

Abstract

We propose a high-precision beam steering real-time control system that leverages optical true time delay (OTTD) based on serial

$2\times 2$

optical switch differential delay pairs. The pre-designed OTTD system utilizes a three-layer structure including a host computer, main control module, and delay module, containing a set of coding rules for mapping delay to switch as well as reducing programming redundancy and a set of communication modules for on-chip communication and real-time control. To address the challenge of ultra-short fiber lengths, we introduce a method based on Galois field principles, exploiting phase periodicity. This approach allows us to determine fiber lengths without fabricating excessively short fibers, ensuring effective phase traversal and thus improving the system’s flexibility. The experimental results show that the system can switch states in real-time within 0.24 ms, with an angular deflection range of 1° between −60° and 60° in simulations, showing the potential of our method for flexible beamforming design.

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基于伽罗瓦场的可编程高精度实时波束形成网络

我们提出了一种高精度光束转向实时控制系统，该系统利用基于串行$2\ × 2$光开关差分延迟对的光真时间延迟（otd）。预先设计的otd系统采用三层结构，包括主机、主控模块和延迟模块，包含一套编码规则，用于将延迟映射到切换，减少编程冗余，以及一套通信模块，用于片上通信和实时控制。为了解决超短光纤长度的挑战，我们引入了一种基于伽罗瓦场原理的方法，利用相位周期性。这种方法允许我们在不制造过短的光纤的情况下确定光纤长度，确保有效的相位穿越，从而提高系统的灵活性。实验结果表明，系统可以在0.24 ms内实时切换状态，在- 60°和60°之间的角偏转范围为1°，显示了我们的方法在柔性波束形成设计中的潜力。

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

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.