A Flexible Bidirectional Fiber-FSO-5G Wireless Convergent System

A flexible bidirectional fiber-free-space optical (FSO)-fifth-generation (5G) wireless convergent system with 1-Gb/s/4.5-GHz sub-6 GHz and 10-Gb/s/28-GHz millimeter-wave (MMW) (downstream), as well as 10-Gb/s/24-GHz MMW (upstream) 5G hybrid data signals is built, employing a vertical cavity surface...

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Bibliographic Details
Published in:Journal of lightwave technology 2021-03, Vol.39 (5), p.1296-1305
Main Authors: Li, Chung-Yi, Lu, Hai-Han, Chou, Cing-Ru, Hsia, Hsin-Mao, Feng, Chao-Yu, Chen, Yi-Hao, Huang, Yu-Ting, Nainggolan, Agustina
Format: Article
Language:English
Subjects:
5G mobile communication
Adaptive optics
Bit error rate
Convergence
Distributed feedback lasers
Fiber-FSO-5G wireless convergence
fifth-generation (5G)
High speed
High-speed optical techniques
Millimeter waves
Optical attenuators
Optical communication
Optical fiber networks
Optical fibers
Phase modulation
Phase transitions
remotely injection-locked DFB LD
Semiconductor lasers
VCSEL-based wavelength selector
Vertical cavity surface emission lasers
Wireless communication
Wireless networks
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Summary:A flexible bidirectional fiber-free-space optical (FSO)-fifth-generation (5G) wireless convergent system with 1-Gb/s/4.5-GHz sub-6 GHz and 10-Gb/s/28-GHz millimeter-wave (MMW) (downstream), as well as 10-Gb/s/24-GHz MMW (upstream) 5G hybrid data signals is built, employing a vertical cavity surface emitting laser (VCSEL)-based wavelength selector and a remotely injection-locked distributed feedback laser diode (DFB LD) for presentation. It is the first to adopt a VCSEL-based wavelength selector to adaptively provide 5G applications and an injection-locked DFB LD to perform a phase modulation-to-intensity modulation transformation with an optical-to-electrical conversion. Good bit error rate performance and acceptable eye diagrams are achieved over 25 km single-mode fiber transport, 600 m FSO link, and 10 m/4 m RF wireless transmission. Such demonstrated fiber-FSO-5G wireless convergent system is a promising one toward optical-based long-haul networks at comparatively high-speed operations. It exhibits an excellent convergence not only due to its development for incorporating optical fiber with optical/5G wireless networks, but also due to its enhancement for flexible two-way high-speed and long-haul communications.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2020.3037943