Ericsson and Deutsche Telekom have completed a field trial of 100 Gbps optical transmission. Ericsson supplied its Marconi MHL 3000 WDM platform as part of the publicly funded 100GET R&D project. For the demonstration, an existing link with mixed 10G and 40G traffic with a 50 GHz channel spacing was used. A line rate of 112 Gbps was achieved using polarization multiplexed RZ-DQPSK and a fast polarization tracker over 600 km standard SMF. The link included multiple ROADMs and unequally distributed amplifiers.
Hans-Dieter Haag, member of CTO-organization within Deutsche Telekom’s HQ said: “For today’s and future transport networks, a flexible optical transport plane is an unquestioned necessity both regarding technical and commercial scaling. This leverages the value of our exiting fiber assets and helps us to cope with the bandwidth – revenue paradoxes. Further more, it is a key technology to support our efforts in corporate sustainability and power efficiency. Deutsche Telekom is actively contributing to the definition of various 100G standards. We are pleased to see the continuous scaling capabilities of already deployed equipment with mixed 10G & 40G traffic to be used even for the transmission of 100G channels.”
Håkan Eriksson, Senior Vice President and CTO of Ericsson said: “100G transmission is at the cutting edge of optical technology and is expected to become a key requirement for many network operators in the coming years. It is an excellent fact that Ericsson is already now displaying our capabilities to demonstrate the technology and work closely with customers like Deutsche Telekom and standards bodies to refine the technology.”
DT and Ericsson said they plan to continue with field trials throughout 2009 and further cooperate closely with customers to determine the best modulation formats to ensure that the products fit future requirements.
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