Huawei today said it developed a second generation TWDM-PON prototype.

The prototype will be demonstrated at the Europe FTTH COUNCIL in Sweden. The Chinese telecom equipment vendor believes that it will become one of the milestones of TWDM-PON in the way for final commercialization.

Huawei claims that TWDM-PON is the future generation of ultra-broadband PON system (40 or 80G) after GPON and XG-PON, based on stacked XG-PONs with 4 or 8 wavelengths. It allows operators to reuse the existing ODNs, support backward compatibility and smooth migration in broadband access.

The company is a statement said a number of technical barriers need to be conquered in its future commercial deployment, including colorless ONU transceiver module, integrated transceiver module at OLT, and multi-wavelength management and control protocol.

In TWDM-PON system, the transmitter wavelength and receiver wavelength of the ONU transceiver are both tunable. Hence, the ONU wavelength management and control scheme called G.multi protocol is very important. With the implementation of G.multi protocol, this new prototype becomes a unified PON system that is different from 4 wavelength-stacked XG-PONs, paving the way for TWDM-PON commercialization.

“In the Mark II prototype, Huawei is the first in the whole industry innovatively solving the key issues like tunable SFP+ transceiver for ONUs, integrated transceiver for OLT, ONU wavelength control and management, and etc,” said Frank Effenberger, Huawei’s chief expert in access networks.

Huawei’s SingleFAN solution is currently serving over 1/3 of broadband customers worldwide, providing ultra-broadband services to end users.

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