期刊
PHOTONICS
卷 4, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/photonics4040049
关键词
microwave photonics; space-division multiplexing; radiofrequency signal processing; multicore fibers; fiber Bragg gratings; optoelectronic oscillators; true time delay lines
类别
资金
- ERC Consolidator [724663]
- Spanish Projects [TEC2015-62520-ERC, TEC2014-60378-C2-1-R, TEC2016-80150-R]
- Valencian Research Excellency Award Program [GVA PROMETEO 2013/012]
- Spanish MECD FPU Scholarship [FPU13/04675]
- Spanish scholarships MINECO [BES-2015-073359]
- Spanish MINECO Ramon y Cajal program [RYC-2014-16247]
- European Research Council (ERC) [724663] Funding Source: European Research Council (ERC)
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.
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