Funding for this research was provided by:
National Natural Science Foundation of China (NSFC) (11774053)
Natural Science Foundation of Jiangsu Province (BK 20181263, BK 20160878)
This article is maintained by: OSA - The Optical Society
Crossref DOI link to publisher maintained version: https://doi.org/10.1364/OL.44.000319
Article type: letter
Similarity check: Screened by Similarity Check
Peer review
Peer reviewed: Yes
Review process: Single blind
Publication History
Received: 12 November 2018
Accepted: 6 December 2018
Published: 9 January 2019
Copyright: © 2019 Optical Society of America