基于氧化石墨烯的长周期光纤光栅的全光控制

马裕宽; 陈晓旭; 周寿桓; 冯国英; 周昊; 刘鹏宇

doi:10.11884/HPLPB202032.190468

基于氧化石墨烯的长周期光纤光栅的全光控制

doi: 10.11884/HPLPB202032.190468

马裕宽^1,,
陈晓旭¹,
周寿桓^{1, 2},
冯国英^1, ,,
周昊¹,
刘鹏宇¹

1.
四川大学电子信息学院激光微纳研究所，成都 610064
2.
华北光电技术研究所，北京 100015

基金项目: 国家自然科学基金项目（11574221）

详细信息

作者简介:
马裕宽（1994—），男，硕士研究生，从事光纤传感与通信研究；542600404@qq.com

通讯作者:
冯国英(1969—)，女，教授，从事新型激光技术研究；guoying_feng@scu.edu.cn

中图分类号: TN201
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出版历程
- 收稿日期: 2019-11-30
- 修回日期: 2019-12-25
- 刊出日期: 2019-12-26

All optical control of long period fiber grating based on graphene oxide

1.
College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China
2.
North China Research Institute of Electro-Optics, Beijing 100015, China

摘要

摘要: 实验验证了一种通过将氧化石墨烯分散液沉积在长周期光纤光栅的全光控制的相关研究。通过外加的垂直泵浦光的作用，氧化石墨烯吸收泵浦光产生热量，改变长周期光纤光栅的包层模式的相位差，由于热膨胀的作用改变了氧化石墨烯所覆盖部分的光栅周期，使得谐振谱发生了移动，其最大调制深度可达10.6 dB，谐振谱最大可红移12.8 nm。通过实验发现，沉积相同浓度氧化石墨烯分散液的次数影响实验结果，通过在相同光栅的相同位置分别沉积三次，发现沉积三次可以在光纤表面获得更加均匀的氧化石墨烯膜，进行了时间响应的测试，其中沉积三次后的长周期光纤光栅的响应速度可达0.61 ms，沉积多次氧化石墨烯分散液可以在光纤表面沉积得更加平整均匀，从而获得更大的导热性能。
- 全光控制 /
- 光热效应 /
- 氧化石墨烯 /
- 长周期光纤光栅 /
- 全光纤相移器
Abstract: A kind of all-optical control method based on the deposition of graphene oxide dispersion in long period fiber grating is proposed and experimentally validated. Pumped by an external vertical light, graphene oxide generates heat and changes the phase difference of the cladding mode of long-period fiber grating. Due to the effect of thermal expansion, the grating period of the part covered by graphene oxide is changed, which makes the resonance spectrum shift. The maximum modulation depth can reach 10.6 dB, and the maximum resonance spectrum can be red-shifted by 12.8 nm. It is found that the number of times to deposit graphene oxide dispersion with the same concentration influences the experimental results. By depositing graphene oxide dispersion at the same position of the same grating once and three times respectively, it is found that the more uniform graphene oxide film can be obtained on the surface of optical fiber by three times of deposition, which enhances the interaction between light and graphene oxide, and has higher modulation efficiency and tuning efficiency. Finally, the time response test is carried out, and the response speed of the long period fiber grating after three times of deposition can reach 0.61 ms. It is found that the graphene oxide dispersion can be deposited more evenly on the surface of the optical fiber, thus obtaining greater thermal conductivity.
- all-optical control /
- photothermal effect /
- graphene oxide /
- long period fiber grating /
- all fiber phase shifter

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图 1 沉积氧化石墨烯光纤的制作

Figure 1. Preparation of graphene oxide deposited on optical fiber surface

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图 2 沉积不同次数后光纤表面石墨烯扫描电镜图

Figure 2. SEM images of graphene on the surface of optical fiber

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图 3 实验装置示意图

Figure 3. Experimental device diagram

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图 4 980 nm泵浦光对LPG2的调制

Figure 4. Modulation of 980 nm pump light to the device

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图 5 时间响应测试

Figure 5. Experimental device diagram of test time response

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