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首页> 外文期刊>Optics Letters >Large refractive index modulation based on a BDK-doped step-index PMMA optical fiber for highly reflective Bragg grating inscription
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Large refractive index modulation based on a BDK-doped step-index PMMA optical fiber for highly reflective Bragg grating inscription

机译：基于BDK掺杂步进指数PMMA光纤的大折射率调制，用于高反射布拉格光栅铭文

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摘要

We experimentally report high reflectivity on the poly(methyl methacrylate) (PMMA)-based polymer optical fiber Bragg gratings by means of a 266 nm pulsed laser and phase mask technique. In the first recipe, fiber Bragg gratings (FBGs) were manufactured with a single pulse up to 3.7 mJ. After post-annealing, a stable refractive index change up to 4.2 x 10(-4) was obtained. In the second recipe, FBGs were inscribed by 22 pulses with a lower pulse energy of 1.4 mJ, showing a stable refractive index change of 6.2 x 10(-4). Both behaviors may mainly be attributed to the movement of initiating radicals arising from benzyl dimethyl ketal (BDK) under UV irradiation. The high refractive index change in step-index fibers paves the way to tilted FBG manufacturing with large tilt angles potentially for biomedical applications. (C) 2021 Optical Society of America
机译：我们用266nm脉冲激光和相位掩模技术在聚甲基丙烯酸甲酯（PMMA）基聚合物光纤布拉格光栅上进行了高反射率的实验研究。在第一个配方中，光纤布拉格光栅（FBG）是用高达3.7 mJ的单脉冲制造的。后退火后，获得了稳定的折射率变化，最高可达4.2x10（-4）。在第二个配方中，FBG由22个低脉冲能量为1.4 mJ的脉冲雕刻，显示稳定的折射率变化为6.2 x 10（-4）。这两种行为可能主要归因于苄基二甲基缩酮（BDK）引发的自由基在紫外线照射下的运动。阶跃折射率光纤中的高折射率变化为倾斜FBG的制造铺平了道路，而倾斜FBG具有很大的倾斜角度，有可能用于生物医学应用。（2021）美国光学学会

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  • 来源
    《Optics Letters》 |2021年第12期|共4页
  • 作者

    Hu Xuehao; Yue Xiaoyu; Cheng Xin; Gao Shixin; Min Rui; Wang Heng; Qu Hang; Tam Hwa-Yaw;

  • 作者单位

    Shantou Univ Coll Sci Res Ctr Adv Opt &

    Photoelect Dept Phys Shantou 515063 Guangdong Peoples R China;

    Shantou Univ Coll Sci Res Ctr Adv Opt &

    Photoelect Dept Phys Shantou 515063 Guangdong Peoples R China;

    Hong Kong Polytech Univ Photon Res Ctr Dept Elect Engn Kowloon Hong Kong Peoples R China;

    Shenyang Aerosp Univ Coll Sci Shenyang 110136 Peoples R China;

    Beijing Normal Univ Zhuhai State Key Lab Cognit Neurosci &

    Learning Ctr Cognit &

    Neuroergon Zhuhai 519087 Guangdong Peoples R China;

    Shenyang Aerosp Univ Coll Sci Shenyang 110136 Peoples R China;

    Shantou Univ Coll Sci Res Ctr Adv Opt &

    Photoelect Dept Phys Shantou 515063 Guangdong Peoples R China;

    Hong Kong Polytech Univ Photon Res Ctr Dept Elect Engn Kowloon Hong Kong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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