Dynamic distributed Brillouin sensing based on pump frequency-agile quadrupling modulation

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2024-09-25 DOI:10.1016/j.yofte.2024.103979

Xueqian Bai , Wenrui Wang , Biying Zhou , Jun Hu , Ruoqi Wang , Lingyun Ye , Kaichen Song

引用次数: 0

Abstract

We propose a dynamic distributed Brillouin sensing based on a frequency-agile quadrupling method. A common low-bandwidth direct digital frequency synthesizer (DDS) is employed to generate a few hundred MHz of frequency-agile pump pulses for Brillouin gain spectrum (BGS) scanning, and polarization multiplexing technology is utilized to further decrease the bandwidth requirement for the frequency-agile microwave signal to one-quarter. This method has low requirements for electronic devices and significantly reduces costs in systems. Static and dynamic measurement capabilities of 2 km fiber were demonstrated experimentally, the vibration frequencies of 183 Hz were measured with a sampling rate of 400 Sa/s.

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基于泵频率敏捷四倍频调制的动态分布式布里渊传感

我们提出了一种基于频率敏捷四倍频方法的动态分布式布里渊传感。利用普通的低带宽直接数字频率合成器（DDS）产生几百兆赫的频率敏捷泵浦脉冲，用于布里渊增益谱（BGS）扫描，并利用极化复用技术将频率敏捷微波信号的带宽要求进一步降低到四分之一。这种方法对电子设备的要求较低，可大大降低系统成本。实验证明了 2 千米光纤的静态和动态测量能力，以 400 Sa/s 的采样率测量了 183 Hz 的振动频率。

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

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.