Power transmission over optical fibers

P. S. André, N. Fernandes, F. Domingues, A. Rocha, M. Granada, M. Lima, A. L.J. Teixeira

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


The powering of remote electronic equipment with powertransmitted by an optical fiber, also known as power-over-fiber, can be considered a technical solution for providings all-fiber powering with simultaneousdata transmission from/for remote devices which can be used for telecommunications, sensing or other aplications. The basic elements for these solutions are: a pumping laser, typically at a central location; a photovoltaic converter, at a remote location; and an optical fiber, serving asthe transmission medium. The target applications, due to fiber optic power handling limitatios, are systems that require relatively low level of electrical power and where the provision of a conventional electrical power supply is not easy, expensive or hazardous. Clearly, having the media maximum power limited, the key component for a powerover- fiber application is the photovoltaic power converters, which are responsible for the optical to electrical power conversion, at the receiver, which has to be performed with the highest possible efficiency in order to provide enough power for being harvested or used. In this work a review on the current state of the art for the power over fiber technology, providing the basic theoretical fundamentals involved, is presented. As previously mentioned, as key factores, the emphasis will be put on the evolution of the power limits of the transmission in an optical fiber. To substantiate the technology potential, some examples of power over fiber used in sensing and telecom applications will be given.

Original languageBritish English
Title of host publicationAdvances in Energy Research. Volume 8
PublisherNova Science Publishers, Inc.
Number of pages17
ISBN (Electronic)9781620814864
StatePublished - 30 Jan 2013


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