| Fabrication of Long-Period Fibre Gratings Using 800 nm Femtosecond Laser Pulses |
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| 作者姓名： | 张楠 杨建军 王明伟 朱晓农 |
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| 作者单位： | Key Laboratory of Opto-electronic Information Science and Technology of EOM, Institute of Modern Optics, Nankai University, Tianjin 300071 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 60637020 |
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| 摘 要： | Long-period fibre gratings inside standard single-mode optical communication fibres are successfully fabricated with infrared femtosecond laser pulses. The refractive index perturbations are well confined within the fibre core by choosing the proper laser focusing parameters and translation speed of the fibre during the direct laser writing process. With the self-focusing effect considered and at a constant average irradiation dose of 1.62 × 10^3 J/（cm^2μm）, the threshold intensity for fabricating long-period gratings with infrared femtosecond laser pulses is determined to be 5.13 × 10^13 W/cm2.
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| 关 键 词： | 长周期光纤光栅 制备 飞秒激光脉冲 单模光学通信纤维 |
| 收稿时间： | 2006-06-21 |
| 修稿时间： | 2006-06-21 |
Fabrication of Long-Period Fibre Gratings Using 800 nm Femtosecond Laser Pulses |
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| ZHANG Nan,YANG Jian-Jun,WANG Ming-Wei,ZHU Xiao-Nong.Fabrication of Long-Period Fibre Gratings Using 800 nm Femtosecond Laser Pulses[J].Chinese Physics Letters,2006,23(12):3281-3284. |
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| Authors: | ZHANG Nan YANG Jian-Jun WANG Ming-Wei ZHU Xiao-Nong |
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| Affiliation: | Key Laboratory of Opto-electronic Information Science and Technology of EOM, Institute of Modern Optics,
Nankai University, Tianjin 300071 |
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| Abstract: | Long-period fibre gratings inside standard single-mode optical communication fibres are successfully fabricated with infrared femtosecond laser pulses. The refractive index perturbations are well confined within the fibre core by choosing the proper laser focusing parameters and translation speed of the fibre during the direct laser writing process. With the self-focusing effect considered and at a constant average irradiation dose of 1.62×10³ J/(cm²m), the threshold intensity for fabricating long-period gratings with infrared femtosecond laser pulses is determined to be 5.13×10¹³ W/cm². |
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| Keywords: | 42 65 Re 42 79 Dj 42 81 Bm |
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