Innovation doubles 25 Gbps distance to 20 km

19 Mar 2019
Kim Ulrik Schaumann

Bifrost Communications is in the process of doubling the 25 Gbps distance to 20 km for DWDM C-band and L-band systems.

“The Bifrost ASIC has build in Chromatic Dispersion Compensation and the chip successfully controls the dispersion and maintains a satisfactory eye diagram even at 25 Gbps over 20 km,” says Jesper Bevensee Jensen, CTO of Bifrost Communications.

The company, which is a university spin-off from the Technical University of Denmark’s Department of Photonics Engineering, expect that optical components vendors and system integrators will be interested in partnering up to produce solutions for Data Center Interconnect and mobile 5G network implementation.

License offered to all parties

Bifrost’s product is a signal processing chip which, together with a license to use their IP, will enable industrial business partners to manufacture a new form of much more efficient optic transceivers at a very competitive price suitable for mass market production. Bifrost offer their service to markets worldwide and to all interested parties.

The company expect to be ready with a demo in a couple of months.

The ability to double the 25 Gbps distance to 20 km for DWDM C-band and L-band systems is the latest use that Bifrost has applied its technology to. This application supplements the ongoing development of transceivers build on the same IP that enable a much better utilisation of operator’s fiber access networks and obviate infrastructure with more than one network by enabling the more demanding NGPON2 classes.

“We expect that the first commercial optic transceivers utilising our technology will be in production within a year,” says Bo Pedersen, CEO of Bifrost Communications.

“Several network operators have shown great interest in deploying transceivers based on our design in their fiber-optic access networks. Therefore we expect that more vendors and system integrators will seek to enter into cooperation with us to be able to meet the heavy demand for new transceivers that will soon arise. Our transceivers will be needed in millions,” says Bo Pedersen.

The optimal solution at reasonable costs

Today, operators and equipment vendors are challenged with bottlenecks in their access networks due to rapidly increasing internet traffic, and the industry have launched several initiatives to investigate possibilities to improve their access networks significantly.

The technology developed by Bifrost is a quasi-coherent receiver that makes not only large cost savings but also significant efficiency improvements possible for operators globally. It is an opportunity that enables operators worldwide to provide gigabit fiber-optic internet connections at reasonable costs and with low power consumption.

All classes of NGPON2-standard met

With technology from Bifrost, transceiver vendors can manufacture their own transceivers using commercial available optoelectronic components and meet all classes of the NG-PON2 standard, which is a new much more efficient worldwide standard set for fiber-optic internet connections.

Bifrost Communications is a member of Broadband Forum – the system vendors’ industry organisation – and FSAN, a likewise defining body for broadband technologies for the world’s leading telecommunications services providers, independent test labs, and equipment suppliers.

Broadband Forum’s statement from 2017 comes true

Back in October 2017 at the Broadband World Forum in Berlin, Bifrost was amongst the members when Broadband Forum officially stated that the NG-PON2 multichannel optical network standard can be the key for long-term success. Now Bifrost are set to prove that the forum was right.

The NG-PON2 standard is defined to make it possible for equipment vendors to develop a technology that supports utilizing today’s conventional optical networks much better. While other vendors struggle to meet the higher classes of the new standard, Bifrost’s patented technology can cost-effectively meet the link budget of even the toughest NG-PON2 class (E2). Hence, Bifrost’s technology has gained high interest from the NG-PON2 community.

NG-PON2: New technology will merge 3 networks into 1

Today most ISP’s deploy three separate physical access networks: One for business customers, one for mobile users and one for home users. Most capacity is not utilized so that’s a tremendous waste of resources and capacity.

The record breaking receiver sensitivity of the Bifrost technology enables much better use of the capacity in those fibers.

Conventional optic networks are so inefficient because they only use a single wavelength channel, typically limiting the bandwidth to 10 Gbps and the number of users to 32. Therefore, current technology will be unable to support future broadband demands where each user will demand 1 Gbps or more. Equally important, due to the limitations of current optical networks, Central Offices must be located within 10 km of end-users or 4G/5G masts.

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