Mobile networks require a high-performance link for mobile transport, the most common solution being a dedicated point-to-point (P2P) fiber. However, an attractive alternative for converged operators who offer mobile and fixed services is to leverage a common fiber infrastructure for both services. It is possible to leverage different technologies on a common fiber and/or to leverage common technologies on dedicated fibers. In this white paper, we explain the key characteristics of a Passive Optical Network (PON), and detail how such a network can help accelerate the deployment of mobile networks and reduce the total cost of ownership (TCO).