基于级联光纤光栅的DCF后补偿优化方案研究
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(西安邮电大学 电子工程学院,陕西 西安 710121)

作者简介:

王 翀 (1972-),男,硕士,教授,主要从事光信息及光纤传输、通信技术、光电子学等方面的研究。

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TN92911

基金项目:

陕西省自然科学基础研究计划项目(2020JM-578)和西安市科技计划项目(2022JH-RYFW-0267) 资助项目


DCF postcompensation optimization scheme based on cascaded fiber Bragg grating
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(School of Electronic Engineering, Xi′an University of Posts and Telecommunications, Xi′an, Shaanxi 710121, China)

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    摘要:

    为了减小光信号在光纤中的色散,提高系统的输出性能,本文提出了一种级联光纤光栅(fiber Bragg grating,FBG)结构。首先分析了色散补偿光纤(dispersion compensating fiber,DCF)的3种补偿方案(前补偿、后补偿、对称补偿),得出使系统性能最佳的是后补偿,接着分析了后补偿在不同色散补偿方式下对系统的影响。然后针对后补偿方案,在其发射机后级联光纤光栅,以获得光信号的窄线宽和最小化反射率旁瓣,减少传播延迟提高系统性能。在有无级联光纤光栅两种情况下,分析了输入功率和传输距离对系统的影响。结果表明,DCF后补偿方案级联光纤光栅之后,传输距离240 km,最佳输入功率为21 dBm时,Q值从37.152 75提高到了60.552 1,系统的性能提高了63%,证实了在系统中级联光纤光栅可以提高系统的整体输出性能。可见该结构为未来大容量、长距离的光纤传输提供了坚实的基础,具备良好的发展前景。

    Abstract:

    To reduce the dispersion of optical signals in optical fibers and improve the output performance of the system,a cascaded fiber Bragg grating (FBG) structure is proposed in this paper.Firstly,three compensation schemes (pre-compensation,post-compensation,symmetric compensation) for dispersion compensation fiber (DCF) are analyzed,and it is concluded that the post-compensation scheme offers the optimal system performance.Next,the impact of post-compensation under different dispersion compensation methods on the system is analyzed.Subsequently,focusing on the post-compensation scheme,an FBG is cascaded after its transmitter to achieve a narrow optical signal linewidth and minimize the reflectivity side lobes,thereby reducing propagation delay and improving system performance.In both cases,with and without cascaded FBG,the influence of input power and transmission distance on the system is analyzed.The results show that with the DCF post-compensation scheme and the cascaded FBG,the transmission distance reaches 240 km,and the optimal input power is 21 dBm,resulting in an increase in the Q value from 37.152 75 to 60.552 1,representing a 63% improvement in system performance.This confirms that cascading FBG in the system can enhance the overall output performance of the system.This structure provides a solid foundation for future high-capacity,long-distance optical fiber transmission and holds promising development prospects.

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引用本文

王翀,周梦婷,伊依,李苗苗,宋坤,吴嘉辉.基于级联光纤光栅的DCF后补偿优化方案研究[J].光电子激光,2025,(3):310~316

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  • 收稿日期:2023-10-12
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  • 在线发布日期: 2025-01-22
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