Thermal expanded core ultraviolet fiber for optical cavity mode matching  

作　　者：Xin-Xia Gao Jin-Ming Cui Yun-Feng Huang Chuan-Feng Li Guang-Can Guo 高新霞;崔金明;黄运锋;李传锋;郭光灿(CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China;CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China [2]CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Optics Letters》2019年第9期5-9,共5页中国光学快报（英文版）

基　　金：funding support from the National Key Research and Development Program of China (Nos. 2017YFA0304100, 2016YFA0302700);the National Natural Science Foundation of China (Nos. 11774335, 11474268, 11734015, 11821404);Key Research Program of Frontier Sciences, CAS (No. QYZDY-SSW-SLH003);the Fundamental Research Funds for the Central Universities (Nos. WK2470000026, WK2470000018);Anhui Initiative in Quantum Information Technologies (Nos. AHY020100, AHY070000)

摘　　要：We have demonstrated a mode matching method between two different fibers by a hybrid thermal expanded core technique, which can be applied to match the modes of fiber-based Fabry–Pérot cavities. Experimentally, this method has achieved an expansion of the ultraviolet fiber core by 3.5 times while keeping fundamental mode propagation. With the experiment parameters, the fundamental mode coupling efficiency between the fiber and micro-cavity can reach 95% for a plano-concave cavity with a length of 400 μm. This method can not only have potential in quantum photonics research but also can be applied in classical optical fields.We have demonstrated a mode matching method between two different fibers by a hybrid thermal expanded core technique, which can be applied to match the modes of fiber-based Fabry–Pérot cavities. Experimentally, this method has achieved an expansion of the ultraviolet fiber core by 3.5 times while keeping fundamental mode propagation. With the experiment parameters, the fundamental mode coupling efficiency between the fiber and micro-cavity can reach 95% for a plano-concave cavity with a length of 400 μm. This method can not only have potential in quantum photonics research but also can be applied in classical optical fields.

关 键 词：THERMAL expanded CORE ULTRAVIOLET FIBER optical CAVITY MODE 

分 类 号：O4[理学—物理]