Characterization on the phase noise power spectral densities of various coherent fiber links established in China

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

Optical Fiber Technology Pub Date : 2025-03-14 DOI:10.1016/j.yofte.2025.104184

Qian Zhou , Xiang Zhang , Qi Zang , Mengfan Wu , Ru Yuan , Yucan Zhang , Dan Wang , Yiting Liu , Le Fan , Ruifang Dong , Tao Liu , Shougang Zhang

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引用次数: 0

Abstract

In this paper, six coherent field fiber links across a variety of distinct geographical routes in China are randomly selected and established. The fiber-induced phase noise of these coherent fiber links is continuously measured and comprehensively analyzed. The results show that the noise levels of the fiber links established in China surpass those delineated in the extant reported by European research groups. In the frequency domain, in addition to the known field-fiber features of the broad bump within the frequency range of 10–50 Hz, we have also measured another broadening bump in the frequency range 2–8 Hz on some of the links, which may be caused by the vibration of the bridge. Based on the evaluation of the measured phase noise, the fractional frequency instability of a 1600 km fiber link to be used for remote optical clock comparison in China is evaluated, which is crucial for optimizing the link’s performance and mitigating the effects of signal degradation. Consequently, the present study holds significant implications for the establishment and optimization of fiber-based optical clock networks constructed in China.

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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.