The referenced paper [Curr. Opt. Photon. 2, 340-3018)] has been retracted. © 2018 Optical Society of Korea https://doi.org/10.3807/COPP.2018.2.4.340

The paper [1] has been retracted at the request of the authors and by the Code of Research Ethics of the OSK after the review of Research Ethics Committee.

The original article was published on 25 June 2018, and was retracted on 25 August 2019.

1. Ku D. H., Lee S. M., Roh H. N., Kim T.-W., Pahk H. J. 2018 Improvement of PS measurement by phase compensation method and profile fitting method in white light phase shifting interferometry [Curr. Opt. Photon.] Vol.2 P.340-347