Wavelength Selective WDM-PON offers GPON overlay says Telnet Redes Inteligentes

Spanish fiber-optic network systems vendor Telnet Redes Inteligentes S. A. has unveiled WPONverter+. The wavelength-selective WDM-PON system enables operators to overlay higher-capacity WDM links onto their current GPON brownfield deployments without the need of additional passive components in the field.

WPONverter+, paired with Telnet´s SmartXGS 32-port optical switch, supports up to thirty-two 10-Gbps symmetric 100-GHz WDM optical channels. The system is compatible with current FTTH deployments based on power splitters, says the company. It also can transport CPRI traffic transparently for mobile fronthaul applications, Telnet adds.

"Telnet's WS WDM-PON system is an important milestone for the development of future integrated fixed and mobile 5G transport technologies, as it implies important capex and opex savings for telcos because it makes possible the reuse of their current optical access infrastructure for future 5G deployments," according to Carolina Villarig, Telnet´s CEO.

Telnet has integrated 10G tunable SFP+ optical modules and tunable optical filters in the ONU. It also says it has developed a control plane mechanism between the OLT and the ONUs to enable dynamic, automatic control of the tunability of both the transmitter and the receiver channels on each ONU. This control makes all of WDM channels in the network available with no collisions. Thus, any ONU can make use of any of the optical channels, e. g., in case of link failures on a particular channel.

Telnet points out that operators such as Telefonica, a current Telnet FTTH customer, are among the nearly 60% of OLT deployers that could benefit from the new product.

The company adds that the WPONverter+ formed part of a live demonstration of the COMBO European project organized in Orange Labs in Lannion on April 28, 2016. The demonstration featured unification of transport resources in fixed, mobile, and Wi-Fi access and aggregation networks via an integrated optical infrastructure supported by an 18-km field fiber ring.

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