New standards to boost Fibre to the Home from 10G to 50G

New standards to boost Fibre to the Home from 10G to 50G
According to ITU, Millions of homes and businesses access global networks through the cost-efficient Passive Optical Network (PON) technologies standardized by ITU. The next generation, known as “Higher Speed PON”, will provide for speeds of 50 Gbit/s per wavelength, up from the 10 Gbit/s of its predecessors.

According to ITU, Millions of homes and businesses access global networks through the cost-efficient Passive Optical Network (PON) technologies standardized by ITU. The next generation, known as “Higher Speed PON”, will provide for speeds of 50 Gbit/s per wavelength, up from the 10 Gbit/s of its predecessors.
“The first widely deployed system, G-PON [Gigabit PON], is found almost everywhere now and is used by well over 600 million subscribers worldwide,” highlights Effenberger.
But demand for higher capacity is growing fast with the rise of bandwidth-intensive services such as communication via HD video, cloud gaming and Virtual Reality. Optical access solutions will also provide essential support to IMT-2020/5G wireless communications and innovation towards smart cities and smart factories.
“Given the large size and cost of the fixed access network, upgrades generally come once per decade.”
Released in 2019, the first ITU standard of the new G.9804 series, ITU G.9804.1, served as a guide for the development of Higher Speed PON systems by defining the requirements of envisioned applications.
Higher Speed PON includes both single-channel 50 Gbit/s systems to succeed XG(S)-PON and multi-channel 50 Gbit/s systems to succeed NG-PON2 (40G PON, at 10Gbit/s per wavelength).
It will be the first standardized PON system to employ digital signal processing (DSP). Effenberger explains: “This may be surprising to hear that DSP has not been used in PON before, but this is a natural consequence of the nature of fibre-optic transmission. For systems operating at 10 Gbit/s and lower, DSP is simply not needed.”

In tandem with the economies of scale introduced by large-scale deployment, DSP will help Higher Speed PON to uphold PON’s reputation as a cost-efficient optical access solution.

“DSP provides so much advantage that 25G-bandwidth optics can be used to produce a 50G system,” said itu. “This improves the cost profile of the system because DSP shifts the difficulty from the optical domain, where it’s hard to cost reduce, to the digital domain where cost reduction is inevitable due to Moore’s Law.”


Jun 20, 2021
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