Page 44 - Market Analysis Report of Optical Communications Field in China & Global market 2020

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Light connects the world , fiber leads the future

——Fibers for 5G systems

Wen chen, Huang Yu, Zhijian Liu, Hao Guo, Dongxiang Wang
Fiberhome Telecommunication Technologies Co.,Ltd.
A 1. Introduction Table 1: the comparison of G.652.D and G.654.E

s China's three major telecom operators accelerate
the construction of 5G networks in major domestic cities,
the pace of large-scale commercial use of 5G is getting
closer, and the era of high-speed Internet of Things is
near the corner. 5G networks support enhanced Mobile
Broadband (eMBB) services, massive Machine Type transceiver is reduced by 10W. G.654.E fiber can greatly
Communication (mMTC) services, and ultra-reliable and increase the transmission distance of the fiber and reduce
low latency (uRLLC) communications. The 5G network the power consumption of the equipment.
will build a connection all around the world based on [1]
optical communication. This unified-frame structure Figure 1: Performance comparison in 600G systems
extends the advantages of mobile technology to various
fields and develops new applications, new models, and
new industries. Those application scenarios, such as smart
factories, VR video conferencing, immersive traveling,
remote medical services, and autonomous cars will all be
within reach.

Compared to the current 4G mobile network, the data
throughput of 5G has increased by 10 times, and the
communication capacity has increased by 100 times. The
current 100G system ports will no longer meet the terminal
demand of the exponential increase, so the application 3. Base station deployment-thin-diameter bending
of 400G and 600G systems is very urgent. However, insensitive fiber
the existing optical fiber for the backbone networks and 5G is a technology system that includes high and low
base stations is challenging to meet the requirements of frequencies ranging from 3GHz to 6GHz, which has wider
system construction. Therefore, the leading optical fiber spectrum resources and better propagation characteristics
manufacturers have developed and produced new optical than 4G frequency bands. However, due to the increase in
fibers. frequency, the coverage of base stations has been reduced
from a few hundred meters of 4G networks to tens of
2. Optical fiber application in backbone network - meters. In the same continuous coverage scenario, the
G654E number of 5G base stations is 1.5 to 2 times that of 4G base
The 400G/600G systems have more advantages, like higher stations, and the base stations are constructed in higher
spectrum efficiency, lower bit cost and power consumption density. The 5G base station uses the "macro base station
than 100G systems. However, under increasingly higher + small base station" UDN networking method to achieve
baud rates and more complex modulation formats, basic coverage. The large-scale deployment of small base
nonlinear effects severely limit the transmission distance of stations means that the wiring environment becomes more
G.652.D fiber. G.654.E fiber adopts pure silicon core fiber complicated. Therefore, the optical fiber is required to have
design, which eliminates absorption or scattering caused better bending resistance, lower splicing loss, and a smaller
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by impurities and OH , and controls the fiber attenuation outer diameter.
to a low level. At the same time, through high dispersion
(the dispersion of G.654.E fiber is usually 30% larger than Fiberhome's G.657.A1 optical fiber products have the
that of G.652.D fiber) and large mode field design, the characteristics of low attenuation, high bending resistance,
optical power density in the fiber is reduced, the nonlinear and small outer diameter. Its attenuation value is 10% lower
effect is reduced, and the signal power is increased as well. than that of typical G.652.D fiber, and its macrobending
The SNR is significantly improved, and the maximum performance is about 40% better than typical G.657.A1
transmission distance of the system is guaranteed. G.654.E fiber, which is helpful for use in limited space, complex
fiber is an ideal choice for 400G and higher systems. wiring and bending applications. At the same time, the
typical mode field diameter (MFD) value is 9.1μm. The
Research shows : In 600G systems, the maximum diameter is consistent with G.652.D fiber, which avoids
transmission distance of G.654.E fiber is 25% longer the problem of increased fusion loss caused by the MFD
than G.652.D fiber, and the power consumption of the difference with the typical G.657 fiber (MFD: 8.4μm) .
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