**Power‐Over‐Fiber Applications for Telecommunications and for Electric Utilities**

Joao Batista Rosolem

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/68088

#### **Abstract**

Beyond telecommunications, optical fibers can also transport optical energy to powering electric or electronic devices remotely. This technique is called power over fiber (PoF). Besides the advantages of optical fiber (immunity to electromagnetic interferences and electrical insulation), the employment of a PoF scheme can eliminate the energy supplied by metallic cable and batteries located at remote sites, improving the reliability and the security of the system. Smart grid is a green field where PoF can be applied. Experts see smart grid as the output to a new technological level seeks to incorporate extensively technologies for sensing, monitoring, information technology, and telecommunications for the best performance electrical network. On the other hand, in telecommunications, PoF can be used in applications, such as remote antennas and extenders for passive optical networks (PONs). PoF can make them virtually passives. We reviewed the PoF concept, its main elements, technologies, and applications focusing in access networks and in smart grid developments made by the author's research group.

**Keywords:** power over fiber, PoF, fiber powering, sensing, monitoring, photovoltaic converters, smart grid, fiber to the antennas
