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<p>Fiber Bragg Gratings (FBGs) become important in modern sensing and telecommunication technologies, because its ability to reflect specific wavelengths and transmit other of light based on external interaction such as refractive index, strain, and temperature sensor. In the present time, FBGs are commonly used for real time monitoring such as structures which consist of bridges, pipelines, and power grids, improving safety and predictive maintenance. One type of fibre Bragg grating is the long period fibre grating (LPFG), which exhibits wider spectral responses and operates in transmission mode. It is ideally suited for applications such as environmental monitoring, structural health monitoring, and optical communication due to its high sensitivity and low insertion loss. In this study long-period-fibre gratings (LPFGs) were prepared experimentally using a carbon dioxide (CO<sub>2</sub>) laser pulse and SMF. The point by point (pbp) technique was used with changing power values of CO<sub>2</sub> laser: 1.7&#xa0;W, 3&#xa0;W, 4&#xa0;W, 4.5&#xa0;W, 5&#xa0;W. The advantage from using CO<sub>2</sub> laser pulse technique its low cost and highly flexible because it eliminates need for photosensitivity and any pretreatment processes to write a grating in optical fiber. A software system-controlled parameters such as pitch number, power, pulse location on fiber, and velocity for each inscription process. Results explain a quick and easy (pbp) technique of producing uniform grating’s structure using single mode fibres. In the resulting gratings were characterized using optical microscope and optical spectrum analyzer. Gratings were successfully inscribed at all power values. The best results were achieved at 1.7&#xa0;W, 3&#xa0;W powers of CO<sub>2</sub> with Bragg wave length 1563.454&#xa0;nm, 1535.025&#xa0;nm respectively, best length of LPFBG 4&#xa0;mm. The novelty of this work lies in using the PbP technique with varying power parameter values using CO<sub>2</sub> laser to fabricate four different LPFGs.</p>

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Fabrication long period fiber Bragg grating by using CO2 laser

  • 期刊论文

  • 发表日期：

    2025年3月9日

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  • Nidaa L. Mahgoob,
  • Anwaar A. Al-Dergazly

摘要

Fiber Bragg Gratings (FBGs) become important in modern sensing and telecommunication technologies, because its ability to reflect specific wavelengths and transmit other of light based on external interaction such as refractive index, strain, and temperature sensor. In the present time, FBGs are commonly used for real time monitoring such as structures which consist of bridges, pipelines, and power grids, improving safety and predictive maintenance. One type of fibre Bragg grating is the long period fibre grating (LPFG), which exhibits wider spectral responses and operates in transmission mode. It is ideally suited for applications such as environmental monitoring, structural health monitoring, and optical communication due to its high sensitivity and low insertion loss. In this study long-period-fibre gratings (LPFGs) were prepared experimentally using a carbon dioxide (CO2) laser pulse and SMF. The point by point (pbp) technique was used with changing power values of CO2 laser: 1.7 W, 3 W, 4 W, 4.5 W, 5 W. The advantage from using CO2 laser pulse technique its low cost and highly flexible because it eliminates need for photosensitivity and any pretreatment processes to write a grating in optical fiber. A software system-controlled parameters such as pitch number, power, pulse location on fiber, and velocity for each inscription process. Results explain a quick and easy (pbp) technique of producing uniform grating’s structure using single mode fibres. In the resulting gratings were characterized using optical microscope and optical spectrum analyzer. Gratings were successfully inscribed at all power values. The best results were achieved at 1.7 W, 3 W powers of CO2 with Bragg wave length 1563.454 nm, 1535.025 nm respectively, best length of LPFBG 4 mm. The novelty of this work lies in using the PbP technique with varying power parameter values using CO2 laser to fabricate four different LPFGs.