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Photonics 2017, 4(4), 49; https://doi.org/10.3390/photonics4040049

Microwave Signal Processing over Multicore Fiber

ITEAM Research Institute, Universitat Politècnica de València, 46022 Valencia, Spain
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Received: 7 November 2017 / Revised: 2 December 2017 / Accepted: 3 December 2017 / Published: 8 December 2017
(This article belongs to the Special Issue Microwave Photonics 2017)
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Abstract

We review the introduction of the space dimension into fiber-based technologies to implement compact and versatile signal processing solutions for microwave and millimeter wave signals. Built upon multicore fiber links and devices, this approach allows the realization of fiber-distributed signal processing in the context of fiber-wireless communications, providing both radiofrequency access distribution and signal processing in the same fiber medium. We present different space-division multiplexing architectures to implement tunable true time delay lines that can be applied to a variety of microwave photonics functionalities, such as signal filtering, radio beamsteering in phased array antennas or optoelectronic oscillation. In particular, this paper gathers our latest work on the following multicore fiber technologies: dispersion-engineered heterogeneous multicore fiber links for distributed tunable true time delay line operation; multicavity devices built upon the selective inscription of gratings in homogenous multicore fibers for compact true time delay line operation; and multicavity optoelectronic oscillation over both homogeneous and heterogeneous multicore fibers. View Full-Text
Keywords: microwave photonics; space-division multiplexing; radiofrequency signal processing; multicore fibers; fiber Bragg gratings; optoelectronic oscillators; true time delay lines microwave photonics; space-division multiplexing; radiofrequency signal processing; multicore fibers; fiber Bragg gratings; optoelectronic oscillators; true time delay lines
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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García, S.; Barrera, D.; Hervás, J.; Sales, S.; Gasulla, I. Microwave Signal Processing over Multicore Fiber. Photonics 2017, 4, 49.

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