The progressive developments of the mobile/wireless will not only be characterized by the growing capacity and improvement of the mobile / wireless system performance, but it will be also based on more connectivity and relates to the cooperation among different system capabilities with proper convergence in the next generation networks (NGN) and their ability to support and integrate with the Internet of Things (Machine to Machine (M2M) and Device to Device (D2D) Communications). Huge traffic growth as well as a significant reduction of latency dictated by time sensitive services will require a substantial transformation of the radio access networks (RAN) and, consequently, imposes a rethinking of the underlying transport network. Optical technologies with their conventional benefits of high bandwidth, protocol transparency, scalability, low latency, high resiliency and network reconfigurability, are today perceived as a promising key piece of the RANs puzzle, in both front haul and back haul transport areas. Optical transmissions enables Network Function Virtualization (NFV) processes based on the replacement of forwarding machines with virtual appliances of Cloud Radio Access Network (C-RAN). Moreover, new optical technologies like tunable lasers, flex-transceivers and on-demand connection setting could be used to provide a unified agnostic transport for different services. From these scenarios, it is clear that optoelectronics aided photonic aided communications will play an ultimate role in the connections required from all the heterogeneous mobile / wireless networks for various Industry and Societal applications.