Correction: Hu et al. Direct Bragg Grating Inscription in Single Mode Step-Index TOPAS/ZEONEX Polymer Optical Fiber Using 520 nm Femtosecond Pulses. Polymers 2022, 14, 1350Xuehao Hu, Christophe Caucheteur, Shixin Gao et al.|Polymers|2022Cited by 1