to ‘up-speed’ traffic flows. Te company’s XR optics was
launched as the industry’s first point-to-multipoint coherent optical subcarrier aggregation technology, purpose-built to overcome the limitations of traditional point-to-point optical transmission solutions. While supporting point-to-point use cases, XR optics is the first optical technology capable of connecting multiple lower-speed interfaces to a few higher-speed interfaces through aggregation in the optical domain, without electrical aggregation devices. XR optics utilizes digital signal processing to subdivide the transmission and reception of a given wavelength spectrum into a series of smaller- frequency channels called digital subcarriers. Each digital subcarrier can be
independently managed and assigned to different destinations, enabling the industry’s first scalable point-to-multipoint,
Nokia believes that 25G PON technology will continue to grow in importance over the coming months, and has seen the first trials of its own 25G PON technology by UK operator Openreach. Te aim is that the technology could help to deliver reliable broadband speeds of 25Gb/s over a single optical fibre on the Openreach network. Based on the Quillion chipset
and available for the widely deployed Nokia fibre platorm, the technology can run on the same underlying infrastructure that Openreach is already building across the UK. Tis means that, with further field trials to test compatibility with existing technologies, the firms could potentially develop a wider range of services and speeds for communications providers. Sandy Motley, president Nokia
Fixed Networks, said: ‘Te key to unlock the virtually unlimited capacity that fibre offers is to develop new generations of fibre technology – and faster chips. Nokia’s Quillion chip allows us to
Fibre Yearbook 2022
direct low-speed to high-speed optical transceiver connectivity. A single 400G XR optics hub module generates 16 x 25 Gb/s digital subcarriers. Tese can be assigned individually or combined in 25 Gb/s increments to provide the required bandwidth to a specific destination. XR optics is more than just a set of pluggables; it is a virtual transponder offering system-level features like topology awareness and control plane, constellation power management, and optical spectrum analyzer. XR optics has been granted
numerous innovation awards. Te Open XR Forum was founded in 2021, with members including major Tier 1 service providers. Tere have been numerous demonstrations, proofs of concepts, and field trials to date (150+ customer engagements, 30 completed demos/trials). Product availability is planned for 2022.
www.infinera.com
have a solution that supports three generations of PON technology from a single platorm that is already in the Openreach network. Having GPON, XGS-PON and 25GS-PON all on the same fibre means Openreach can efficiently evolve the network capabilities, address new opportunities and connect more consumers, businesses and 5G cell sites.’ Not long aſter the Openreach
announcement came the launch of under Nokia’s Quillion chipset of the Lightspan DF-16GM optical line terminal (OLT). Pitched as the company’s smallest, the OLT can simultaneously provide services from 1 to 25Gb/s. Designed for deployment in street cabinets, the device is targeted at fibre network providers looking to extend their networks beyond dense urban environments. Te Lightspan DF-16GM addresses the market for new use-cases which require high-capacity solutions in a small form-factor and which can be easily installed in distributed environments.
www.nokia.com
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