This Publisher’s Note corrects the author affiliation labeling in Optica 5, 1549 (2018) [CrossRef] .
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
In Ref. , an affiliation label was corrected for author H. Chen. The correction was made to the published paper on 5 December 2018.
1. S. Li, Y. Zhou, J. Dong, X. Zhang, E. Cassan, J. Hou, C. Yang, S. Chen, D. Gao, and H. Chen, “Universal multimode waveguide crossing based on transformation optics,” Optica 5, 1549–1556 (2018). [CrossRef]