In recent decades, the exponential growth in the number of users and devices connected to communication networks has posed significant challenges for telecommunications systems. This increase, driven by the rise of mobile connectivity, the Internet of Things (IoT), and the deployment of next-generation networks like Fifth Generation (5G), requires continuous improvement in the capacity and performance of communication infrastructure. Networks must handle great traffic density and provide low latencies while maintaining or even improving energy efficiency. Over the years, various solutions have been developed to tackle these challenges. Among them, the implementation of advanced architectures such as Centralized or Cloud Radio Access Network (C-RAN) stands out, as it allows the centralization of network control to maximize efficiency and reduce power consumption. Additionally, the development of new communication protocols based on advanced signal modulation and multiplexing techniques has enabled a radical increase in data transmission capacity within mobile communication networks. As a solution to bandwidth and latency issues in networks, fiber optics has replaced traditional metallic transmission media. Fiber optics offer greater bandwidth, improved efficiency, and higher data transmission speeds than classic metallic transmission media. Today, extensive fiber optic-based infrastructures are deployed around almost all regions of the globe, interconnected by both terrestrial and submarine means. However, the challenge of improving the energy efficiency of communication networks remains a key focus for researchers worldwide. The combination of new C-RAN configurations and modern fiber optic infrastructures creates the ideal environment for different solutions. In this context, Power over Fiber (PoF) technology emerges as a significant advancement. This technology, which involves transmitting power in the optical domain to supply remote electronic systems, enables the centralized delivery of power to communication network nodes through fiber optics. Centralizing power generation in a single location allows for more detailed control of power distribution, facilitating techniques such as PoF pooling, where power is directed to the nodes handling the most traffic while shutting down inactive ones. PoF technology also offers significant advantages in other fields. In extreme environments with high electromagnetic activity or in areas with a high risk of fire or explosion, power transmission via optical signals is particularly suitable, as light does not interact with other electromagnetic signals and does not produce sparks that could ignite a fire or cause an explosion. This work aims to explore the PoF technique applied to optical communication networks to investigate synergies between the two fields and address any incompatibilities. A series of experiments will be proposed and carried out to characterize the effects of simultaneously transmitting both PoF and communication signals over optical fibers, identifying advantages and drawbacks. The study will explore various types of fibers, from the most widely used and established ones to more exotic alternatives, always seeking the best option for these communication systems. Solutions will also be explored to centrally manage high-power optical signals typical of PoF technology, making it more compatible with C-RAN architectures. Monitoring techniques will be proposed for PoF signals in Spatial Division Multiplexing (SDM) links, taking advantage of fiber optic properties to implement centralized, low-power control of PoF signals without affecting other signals transmitted in the system. Finally, PoF technology will be investigated in a novel environment: space. The design process of a payload to demonstrate PoF technology in space will be presented. This payload will be launched into orbit around Earth in early 2025, marking the first real demonstration of PoF technology in space.