Huawei and Vodafone Trial First OTN-based 400G WDM Network in Turkey

[Shenzhen, China, August 31, 2015] Huawei and Vodafone Turkey today announced the successful trial of Turkey’s first Optical Transport Network (OTN)-based 400G wavelength-division multiplexing (WDM) network. The trial was conducted between Istanbul and Ankara, the two biggest cities of Turkey, with a combined population of around 30 million people, and covering a total length up to 570km.

The trial was successfully carried out over the existing network, a hybrid of 10G/40G/100G channels, which uses an advanced ‘Flex-grid’ infrastructure with Huawei’s OTN platform OptiX OSN9800. This approach increases the capacity on a fiber cable by compressing the gaps between transmission channels, usually set at 50GHz, and increasing the density of channels on a fiber, making it around 25% more efficient than today’s typical core network links.

The large-capacity 400G OTN solution is based on a polarization division multiplexed 16-ary quadrature amplitude modulation (PDM-16QAM) higher order coding scheme. This not only provides Vodafone Turkey with huge capability bandwidth for increasing demands on cloud computing, media streaming and LTE services, but also enables it to deliver both fixed and mobile broadband services to its customers more efficiently. As a result, there will be less need for Vodafone Turkey to invest in more cables as bandwidth demand from consumers and businesses continues to grow.

Vodafone will also be able to upgrade its existing WDM network from the current 10G/40G/100Gbps per channel to 400Gbps per channel, and even 1Tbps per channel in the future, reusing all the existing platform. As a result, the total capacity of the WDM network will be upgradable from 8T to 20T smoothly.