Tencent completes 200G IP over DWDM demo using Acacia’s CFP2-DCO

Created April 23, 2019
Applications and Research

Acacia Communications, has announced that, in a lab demonstration, Tencent has completed 80 kilometre fibre transmission of multiple 200G 8QAM signals over its OPC-4 open line system (OLS) using Acacia’s CFP2-DCO modules on third-party switch platforms. In order to emulate the higher fibre loss in its metro networks, Tencent added additional 10 dB optical attenuators to the tested link, and was still able to achieve error free operation in all the ports. OPC-4, which was developed by Tencent, meets Tencent’s SDN requirements for a disaggregated transport network and is fully integrated into Tencent’s network controller. Tencent believes that this lab demonstration validates the deployment readiness of their IP over DWDM solution using OPC-4 in their metro DCI networks.

The lab demonstration was performed using Acacia’s CFP2-DCO modules with 50GHz channel spacing and 200G 8QAM modulation, which was selected by Tencent to address the challenging fibre loss in its metro DCI applications, and showcases the ability to support transmission of up to 19.2T on a single fibre using Tencent’s 96 channel OPC-4 and Acacia’s CFP2-DCO modules. With this demonstration, Tencent is highlighting the value of IP over DWDM and disaggregated solutions to cost-effectively meet the growing bandwidth needs of Tencent’s metro DCI infrastructure.

“This demonstration validated that Acacia’s CFP2-DCO product has been integrated into switch platforms in terms of mechanical, electrical, power and firmware interfaces. The switch platform was able to configure the CFP2-DCO and access advanced performance monitoring functionality for the module, as well as the link,” said Jengyi Geng, senior network architect at Tencent. “With Acacia’s 200G CFP2-DCO, our switch platform can support 8 ports, for up to 1.6T per line card and our OPC-4 can support transmission of up to 19.2T over a single fibre for metro DCI applications. In addition, the CFP2-DCO form factor provides us with a pay-as-you-grow deployment model.”

Test set-up configuration

“We are excited that our high-performance, low-power CFP2-DCO was able to address the performance required in Tencent’s metro DCI network, and were impressed by the level of integration in the switch platform and OPC-4 open line system,” said Tom Williams, associate vice president of marketing at Acacia Communications (pictured). “We believe this lab demonstration underlines the importance of pluggable coherent modules in applications such as Tencent’s metro DCI network, potentially creating opportunities for our NEM customers to offer differentiated solutions in these applications.”

Acacia’s module is compliant with the OIF CFP2-DCO Implementation Agreement, which also includes support for next generation 400G solutions, further improving board density and fibre capacity. Based on its Meru DSP ASIC, Acacia’s CFP2-DCO module has been shipping in production since December 2017. In March 2019, Acacia and Lumentum successfully demonstrated interoperability between their respective CFP2-DCO modules operating at 200G.

For more information, visit acacia-inc.com

 

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This article was written
by Peter Dykes

Peter Dykes is a independent telecoms and technology journalist who has over that last 30 years written for a wide range of B2B publications and companies. A former BT engineer, he specialises in networks and associated support systems. He is currently Editor of Optical Connections.