新型光控砷化镓/侧边抛磨太赫兹光纤调制器  

Novel Optically Controlled GaAs/Side-Polished Terahertz Fiber Modulator

作　　者：徐成 韩鑫洋 骆震阳 杨铁锋 孔德鹏[2] 陈立均 吴岱[3] 李鹏[3] 徐利民 吴衡 卢惠辉 陈哲 关贺元[1] Xu Cheng;Han Xinyang;Luo Zhenyang;Yang Tiefeng;Kong Depeng;Chen Lijun;Wu Dai;Li Peng;Xu Limin;Wu Heng;Lu Huihui;Chen Zhe;Guan Heyuan(Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Jinan University,Guangzhou 510632,Guangdong,China;Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,Shaanxi,China;Institute of Applied Electronics,CAEP,Mianyang 621900,Sichuan,China;Guangdong Provincial Key Laboratory of Cyber-Physical System,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Jihua Laboratory,Foshan 528200,Guangdong,China)

机构地区：[1]暨南大学光电信息与传感技术广东普通高校重点实验室,广东广州510632 [2]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,陕西西安710119 [3]中国工程物理研究院应用电子学研究所,四川绵阳621900 [4]广东工业大学广东省信息物理融合系统重点实验室,广东广州510006 [5]季华实验室,广东佛山528200

出　　处：《激光与光电子学进展》2023年第18期29-37,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金NSAF联合项目(U2030103,U2230111);国家自然科学基金项目(61775084,62075088);广东省科学技术协会青年科技人才培育计划(SKXRC202304);广东省自然科学基金(2020A1515010791,2021A0505030036,2022A1515110970,2022A1515140055);广东省信息物理融合系统重点实验室(2020B1212060069);广州市基础与应用基础项目(202201010654)。

摘　　要：太赫兹调制器作为太赫兹技术应用的重要器件之一,在太赫兹通信、成像和传感等领域具有广泛应用前景.但是目前太赫兹调制器调制深度、工作带宽、稳定性等有待提升,这制约了太赫兹技术的进一步推广与发展.基于此,设计并制备了一种新型光控砷化镓/侧边抛磨太赫兹光纤(SPTF)调制器,将砷化镓转移到太赫兹光纤抛磨区,增强太赫兹波倏逝场与砷化镓相互作用.在外置808 nm激光器照射下实现对太赫兹波幅度调制,调制深度达到97.4%.实验结果表明,这种新型的光纤调制器具有较好的光控调制效果.同时,该器件体积小、集成度高,具有广泛应用的潜力.As an important device for the application of terahertz technology,the terahertz modulator has a wide application prospect in the fields of terahertz communication,imaging,and sensing.However,current terahertz modulators exhibit problems,such as low modulation depth,narrow operating bandwidth,and poor stability.This restricts further promotion and development of terahertz technology.In this study,a new optical control GaAs/sidepolished terahertz fiber(SPTF)modulator is demonstrated.GaAs film is transferred to the polished region of the terahertz fiber to enhance the interaction with the terahertz evanescent wave.The highest modulation depth of GaAs/SPTF modulator is 97.4%with an external laser irradiation of 808 nm.The experimental results show that this new fiber modulator exhibits a good optical control modulation effect.Additionally,the compact and highly integrated design of the device suggests its broad application potential.

关 键 词：太赫兹调制器 侧边抛磨光纤 砷化镓 光控 调制深度 

分 类 号：O536[理学—等离子体物理]