Tunable fiber-tip lens based on thermo-optic effect of amorphous silicon

作     者：Ping Li Jing Liu Peng Huang Xingyu Zhang Jinhui Shi Libo Yuan Chunying Guan 李平;刘静;黄鹏;张星宇;史金辉;苑立波;关春颖

作者机构：Key Laboratory of In-Fiber Integrated Optics of Ministry of EducationCollege of ScienceHarbin Engineering UniversityHarbin 150001China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2020年第18卷第3期

页      面：17-20页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Nos.91750107,61675054,61875044,and U1931121) the Natural Science Foundation of Heilongjiang Province in China(No.ZD2018015) 111 Project of the Harbin Engineering University(No.B13015) the Fundamental Research Funds for the Central Universities(Nos.3072019CF2501,3072019CF2521,and 3072019CF2509) 

主　　题：fiber-tip lens tunable focus length all-dielectric metasurface thermal-optic effect 

摘      要：We theoretically demonstrate a compact all-dielectric metasurface fiber-tip lens composed of sub-wavelength amorphous silicon on the end face of a multimode *** full 2πphase control was realized by varying the widths of resonant *** tunable focal length is achieved by using the thermal-optic effect of amorphous *** focal length increases from 309μm to 407μm when the temperature changes by 300 *** temperature controlled all-fiber integrated lens is compact and with high efficiency and provides an excellent platform of a fiber-tip ***,the proposed fiber lens does not have any structural changes during dynamic tuning,which improves the durability and repeatability of the devices.