The Evolution of All-Optical Networks in Trend
Data transmission is the main function of optical communication. Every day, more data is generated. The bandwidth and capacity of optical communications must be constantly increased to meet demand and prevent congestion. The development of numerous similar devices, including the EPON/GPON MDU, optical splitter, OLT, ONU, etc.
At the moment, it is extremely evident how optical communication can increase its transmission capacity. Two methods exist: First, maintain the single-wave capacity improvement, which is akin to a road widening. In order to enable point-to-point direct access to expressways and eliminate transfers, all routing switching nodes should be upgraded.
Fiber Optic Communication Development
Numerous industry-specific digital scenarios, including smart factories, smart logistics, smart cultural tourism, etc., have surfaced in the modern period, accelerating the production of vast amounts of data and necessitating more potent processing and communication capabilities. ICT draws its electricity from this source as well.
When discussing wireless networks, the focus should shift to 5G, whilst wired networks should focus on optical fibre. The handling of IoT and big data using optical fibre communication will be covered in this article.
An increase in single-wave capacity
The two major methods for raising the single-wave rate are expanding the baud rate and using a higher-order modulation technique.
High-order modulation has a weak anti-noise capability despite being able to quadruple speed. This means that high-order modulation cannot be employed when the external environment deteriorates or the transmission distance is great, and only the cost can be decreased.
At high baud rates, more beneficial than higher-order modulation. Without compromising the transmission distance, it can enhance speed. However, optoelectronic devices find it difficult to operate at high baud rates. To put it simply, there is a process issue.
Increase the Bandwidth of Optical Communications
If you want to improve a single fiber’s transmission rate in addition to its single-wave capacity, you can only have the fibre send out more waves. You can only increase the spectral bandwidth of optical communication if you want additional waves.
Notes:
Optical fibre capacity = single-wave capacity * number of waves
In fact, just like wireless communication, optical communication depends on spectrum resources.
One optical fibre is used to transmit the optic of various frequency bands. According to the assumption that the guard interval is taken into account, the capacity increases as the available spectrum bandwidth increases, allowing for the transmission of more optical wave numbers.
The channel often employs the C-band and the 4THz spectrum resource. The spectrum resources grow by 20% to 4.8THz after extending to the CE band. It is 6THz if the C++ band is utilised. It is 11THz, which is 175% higher than the C band, if the C+L band is used.
The backbone transmission capacity can be enhanced to 400G80 waves=32Tbps if the C++ band has 80 waves at a rate of 400G per wave.
Experts are still making a big deal about optical fibres since they believe that they can speed up the process even more. New fibre optic transmission technologies including MCF, FMF, and PCF are currently taking the industry by storm.
Switching using only optics
The core of the all-optical network 2.0 is the switching node, which can be upgraded and expanded in addition to boosting the rate and bandwidth.
The replacement of all electrical routes is the ultimate goal of optical communication. In other words, the optical path should be used to transmit all data. In addition to the residence, optical fibre should be installed in every room, computer, television, and refrigerator. Optical network access has superseded all fixed network access.
Additionally, photoelectric conversion inside the apparatus should be stopped. The chip and the component should receive the optical path directly. Additionally, there are all optical paths both within and between chips. The ultimate objective of optical communication is this. On the user side, we are presently at the FTTR/FTTH stage. The family network has successfully implemented PON. Many services for services are made possible by the EPON and GPON networks. On the backbone side, all-optical wavelength switching has been made possible in the market thanks to the success of ROADM and OXC.
In conclusion, the fibre optic network is far more significant than 5G because it is the basis of the entire digital era. One of the few communication fields deserving of in-depth research is optical communication technology.
