Perspectives of Radio over Fiber Technologies

Abstract

Radio-over-Fiber technologies enable efficient provisioning of broadband wireless services both in access and in in-building networks, in particular when combined with flexible optical routing and dispersion-robust RoF transport techniques, such as optical frequency multiplying.

Design and Performance Analysis of Radio over Fiber System Incorporating Differential Phase Shift Keying Modulation in High Speed Transmission System

“…These filtered signals are then passed through photo-detector which will convert these optical signals directly into baseband signals. Low pass filters(Cutoff frequency = .75 * Bit rate Hz) are used to filter higher frequency components and finally we will get data which was initially transmitted [6], [7], [8]. Table 4(1).…”

Recent research progress in hybrid fiber-optic in-building networks

“…The Optical Frequency Multiplying (OFM) technique is a radio-over-fiber technique which is capable of overcoming the modal dispersion in multimode fiber links, and at the same time of delivering an extremely pure microwave carrier to a simplified antenna station while only needing moderate-speed electronics at the central station [3]. Basically, by sweeping the optical frequency of a laser diode, intensity-modulating this signal with the data, and subsequently generating multiple harmonics of that sweep frequency in an FM-to-IM converting periodic optical filter, at the antenna station a higher harmonic can be selected and thus a modulated microwave carrier is generated; see Fig.…”

Software-defined reconfigurable microwave photonics processor

“…In addition, MWP creates new opportunities for information and communication (ICT) systems and networks. While initially the research activity in MWP was focused towards defense applications, it has now expanded its application areas to civil scenarios, spanning conventional areas such as cellular [4], wireless and satellite [5] communications, distributed antenna systems and optical signal processing [6], as well as emerging fields such as converged fiber-wireless [7] and in-home networks [8], medical imaging systems using terahertz (THz) waves [3], wireless body and personal area networks [9], instrumentation and the Internet of Things [3].…”