Influence of polishing depth on the refractive index response of fiber Bragg gratings inscribed in D-shape fibers

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

Optical Fiber Technology Pub Date : 2025-06-09 DOI:10.1016/j.yofte.2025.104283

Denys de S. Scheiner , Nathalia de C. Prediger , Thales H.C. de Barros , Henrique P. Alves , Joaquim F. Martins-Filho , Ricardo C. Kamikawachi

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Abstract

This paper presents a study on the influence of polishing depth on the sensitivity and signal attenuation of D-shaped fiber Bragg gratings. The evaluated depths go beyond the cladding-core interface, typically not presented in the literature. The polishing depths of 1 µm, 2 µm, 3 µm, 4 µm, and 5 µm from the core boundary are numerically analyzed using COMSOL Multiphysics. Experimental results are presented to corroborate the simulation results. The results show that increasing the polishing depth increases the power attenuation in the core, as expected, but on the other hand, increases the sensitivity to the refractive index, with values of 45.3 nm/RIU and 138.9 nm/RIU being obtained for depths of 2.5 µm and 5.2 µm. The observed experimental results are in good agreement with the simulation.

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抛光深度对d形光纤Bragg光栅折射率响应的影响

本文研究了抛光深度对d型光纤布拉格光栅灵敏度和信号衰减的影响。评估深度超出包层-岩心界面，通常没有在文献中提出。利用COMSOL Multiphysics对距岩心边界1µm、2µm、3µm、4µm和5µm的抛光深度进行了数值分析。实验结果证实了仿真结果。结果表明，随着抛光深度的增加，光芯内的功率衰减增加，但另一方面，光芯对折射率的敏感度增加，在深度为2.5µm和5.2µm时，折射率值分别为45.3 nm/RIU和138.9 nm/RIU。实验观测结果与仿真结果吻合较好。

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.