封装型回音壁模式光学微腔器件稳定性研究  

Research on Stability of Packaged Optical Microresonator Device Based on Whispering-Gallery Mode

作　　者：王梦宇 刘霁阳 李远松 范乐康 艾文成 黄宇帆 刘经钰 吴涛 谢成峰 郭状 万生鹏[1] 伏燕军[1] Wang Mengyu;Liu Jiyang;Li Yuansong;Fan Lekang;Ai Wencheng;Huang Yufan;Liu Jingyu;Wu Tao;Xie Chengfeng;Guo Zhuang;Wan Shengpeng;Fu Yanjun(Key Laboratory of Nondestructive Test of Ministry of Education,School of Measuring and Optical Engineering,Nanchang Hongkong University,Nanchang 330063,Jiangxi,China)

机构地区：[1]南昌航空大学测试与光电工程学院无损检测教育部重点实验室,江西南昌330063

出　　处：《中国激光》2022年第17期136-143,共8页Chinese Journal of Lasers

基　　金：国家自然科学基金(51865040,62101230);江西省自然科学基金(20202BABL212011,20202BABL212010,2020BABL212013);江西省教育厅科技项目(GJJ190508)。

摘　　要：回音壁模式光学微腔凭借其超高的品质因数和极小的模式体积在微型激光器、光学滤波器、非线性转换器和光学传感器等光子学器件中扮演着重要的角色。然而,这类微腔光学系统的谐振特性受外界环境的影响非常大,需要消除外界环境对微腔器件的干扰才能进入外场应用。研究了回音壁模式光学微腔的间接封装技术,封装型微球腔器件的Q值达到5.1×10^(7)。研究了封装型微腔器件的稳定性,分析了谐振模式透过率、谐振点偏移和半峰全宽的艾伦方差。结果显示,设计的封装型微球腔器件有着很强的稳定性,并且具有强鲁棒性、便携性、隔离性、集成性等诸多优势,推动了微腔器件的实用化。Objective Due to their ultra-high quality(Q)factor and extremely small mode volume,optical microcavities supported whispering gallery modes are becoming increasingly popular in photonic devices such as micro-lasers,optical filters,nonlinear effects,and optical sensors.However,the external environment,such as changes in environmental pressure,mechanical vibration,dust,and temperature fluctuations,has a considerable impact on the resonance characteristics of this type of microcavity system.The material loss and surface roughness are two important factors that affect the Q value of the microcavity and should not be overlooked.If the silica microcavity is exposed to normal environment,it will adsorb water molecules in the air,reducing the Q factor;therefore,the external environment's interference with the microcavity must be eliminated.To make it suitable for outside applications,the packaging method based on the microcavity must be examined further.Furthermore,the packaging technology must be updated to improve the stability of the coupled microcavity system.Methods The silica microsphere cavity is fabricated by using arc discharge to melt the tip of a single-mode optical fiber.When the end of a standard single-mode fiber is melted and solidified,it forms a sphere with an ultra-smooth surface.The tapered fiber,created using the heat-and-pull technique,serves as a waveguide to excite the microsphere's whispering gallery modes.Subsequently,we propose a whispering gallery mode microcavity and fiber tapered waveguide coupling system that is indirectly packaged.The adjusted coupling state before packaging is not changed during the packaging process,and the silica microcavity is fixed in a sealed and clean transparent glass box.The packaging method has the advantages of ensuring a good coupling state,being isolated from the external environment,portability,and long-term stability of the ultra-high-Q factor.The stability of the transmittance,resonant wavelength point,and full width at half maximum are calibrated and analyz

关 键 词：光纤光学 光学微腔 耦合 封装器件 稳定性 艾伦方差 

分 类 号：TN248.1[电子电信—物理电子学]