文献类型：期刊文献

英文题名：Low insertion loss optical isolator with widely tunable frequency

作者：Hu, Yiqi[1,2];Liu, Lifeng[1];Zhang, Shicheng[1];Li, Xiaolin[1];Qian, Jun[1];Lin, Gongwei[1];Niu, Yueping[1,3];Gong, Shangqing[1,3]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Shanghai Engn Res Ctr Hierarch Nanomat, Shanghai 200237, Peoples R China

年份：2021

卷号：489

外文期刊名：OPTICS COMMUNICATIONS

收录：;EI(收录号：20210910010516);WOS:【SCI-EXPANDED(收录号:WOS:000632327900020)】；

基金：This work was supported by the National Natural Science Foundation of China (grant nos. 11774089, 11674094, 61835013, 11774362, 12034007, 11974109) and the Shanghai Natural Science Foundation, China (grant nos. 17ZR1442700, 18ZR1410500, 202R1414300) .

语种：英文

外文关键词：Magnetic-free optical isolator; Low insertion loss; Tunable frequency; Atomic ensemble

摘要：An optical isolator with a low insertion loss and high isolation is desirable for quantum networks and modern optical communication. Here, we realize an optical isolator with the far-off resonant Raman process in a thermal ??????-type atomic system. The experimental results show a high isolation, ultra-low insertion loss, and widely tunable frequency simultaneously. The maximum isolation is more than 30 dB with 0.07 dB insertion loss. And, the frequency of the isolation can be tuned continuously over 1.2 GHz. This high-performance magnetic-free optical isolator offers opportunities for applications in integrated optics and quantum networks.