800nm高能量飞秒激光脉冲刻写长周期光纤光栅机理
Fabrication Mechanism of Long-period Fiber Grating Based on 800nm High Intensity Femto-second Laser Pulses
查看参考文献18篇
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文摘
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基于800nm飞秒激光脉冲对标准单模光纤采用非载氢技术刻写长周期光纤光栅的机理进行了研究.搭建了水平、垂直双CCD视频监控的飞秒激光脉冲逐点刻蚀长周期光纤光栅系统,研究了光栅长度、激光脉冲能量和光栅占空比等参数对光栅光谱特性的影响.研究结果表明,当光栅周期长度不变,光栅周期数和激光脉冲能量的变化使光栅谐振峰强度发生变化,光栅透射谱是单峰的;光栅占空比的改变导致光栅谐振峰由单峰转变为多峰.在谐振波长1 540nm处,得带谐振峰强度达到15dB、带外损耗不足2dB,在3dB衰减处带宽为15nm的谐振透射谱. |
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其他语种文摘
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The fabrication mechanism of Long-Period Fiber Gratings(LPFGs)in standard SMF-28 telecommunication fibers without hydrogen loading were explored by using direct writing method based on femtosecond laser pulses,with pulse duration of 100fs,1kHz repetition rate and a central wavelength of 800nm.The experimental system to write LPFGs is adopted directly the horizontal and vertical double CCD video to realize monitoring and alignment of fiber.The LPFGs with different spectral characteristics were fabricated by adjusting the number of grating period,energy density of laser irradiation and duty ratio.The result shows that resonance peak loss generate single-peak when the period of grating is constant,and the variations of the number of grating periods and pulse energy of laser irradiation will lead to the change of resonance peak loss.The variations of duty ratio will lead to the generation of resonance rejection band of LPFGs from single-peak to multi-peak plus lesser out-of-band loss.And finally,a resonance transmission spectra with 15dB attenuation,3dB bandwidth of 15nm,and less than 2dB out-of-band losses at wavelength of 1 540nm was obtained. |
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来源
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光子学报
,2018,47(1):0106003-1-0106003-7 【核心库】
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DOI
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10.3788/gzxb20184701.0106003
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关键词
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长周期光纤光栅
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飞秒激光
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超快微加工
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耦合模
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峰值损耗
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地址
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1.
宝鸡文理学院物理与光电技术学院, 陕西, 宝鸡, 721016
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宝鸡市超快光学与新材料工程技术研究中心, 宝鸡市超快光学与新材料工程技术研究中心, 陕西, 宝鸡, 721016
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中国科学院西安光学精密机械研究所, 瞬态光学与光子技术国家重点实验室, 西安, 710119
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1004-4213 |
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学科
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电子技术、通信技术 |
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基金
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国家自然科学基金
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陕西省国际合作科技合作与交流项目
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陕西省科学技术研究发展计划项目
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宝鸡市重大科技专项计划项目
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文献收藏号
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CSCD:6162858
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