University spin-off doubles 25 Gbps distance to 20 km

Created March 8, 2019
Applications and Research

Bifrost Communications says it is in the process of doubling the 25 Gbps distance to 20 km for DWDM C- band and L-band systems. The company, which is a university spin-off from the Technical University of Denmark’s Department of Photonics Engineering, expects that optical components vendors and system integrators will be interested in partnering to produce solutions for Data Center Interconnect and mobile 5G network implementation. “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 (pictured).

 License offered to all parties

Bifrost’s product is a signal processing chip which, together with a license to use its 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 to which Bifrost has applied its technology. This application supplements the ongoing development of transceivers built on the same IP that enables a better utilisation of operators’ fibre access networks and obviates infrastructure for 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 fibre-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,” he added.

The optimal solution at reasonable costs

Bifrost says its technology 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 fibre-optic internet connections at reasonable costs and with low power consumption.

All classes of NGPON2-standard met

With technology, transceiver vendors can manufacture their own transceivers using commercially available optoelectronic components and meet all classes of the NG-PON2 standard, which is a new much more efficient worldwide standard set for fibre-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.

For more information, visit



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.