2025. Numerically Modelled Evaluation of all Optical RZ OOK Conversion to Higher Order M–QAM Format Conversion using Photic Fiber Nonlinearity. Indian Journal of Pure & Applied Physics (IJPAP). 63, 7 (Jul. 2025), 648–665. DOI:https://doi.org/10.56042/ijpap.v63i7.19736.