In this paper. we investigate the impact of classical optical communications in quantum key distribution (QKD) over hollow-core fiber (HCF). multi-core fiber (MCF) and single-core fiber (SCF) and propose wavelength allocation schemes to enhance QKD performance. Firstly. https://www.spidertattooz.com/Essie-Tea-Crumpets-0-5-oz-325-p15557/