Given their widespread use, optical access networks are suitable as a practical infrastructure for mobile networks and services. The diverse range of services supported by mobile networks requires the implementation of slicing mechanisms that can manage resources across all associated network segments, from the mobile user to the core network. In this study, we present a fully operational and integrated 5G network deployment that caters to end-to-end slicing in next-generation access networks. We assess the impact of resource allocation mechanisms within the optical access network on the performance of a slice, particularly in terms of latency and jitter experienced by mobile users.