Dr Kari Clark presents top-scoring paper at OFC conference 2023

National Dark Fibre Facility optical network testbed used to demonstrate picosecond precision clock synchronization. This experimental work was presented as a top-scoring research paper at the Optical Fiber Communications Conference (OFC) in 2023.

Photo of Kari Clark presenting

Dr Kari Clark, Royal Academy of Engineering Research Fellow with the Optical Networks Group (ONG) at UCL, presented his work on the precision clock synchronization for radio access networks at Optical Fiber Communications Conference (OFC) on 8th March 2023.

Future wireless devices, such as driverless cars, require sub-nanosecond synchronisation of their clocks to measure their location to sub-30 cm accuracy.

Using the National Dark Fibre Facility (NDFF) optical network testbed (round links between two nodes at Telehouse and Cambridge) Dr Clark achieved 0.98 ps precision clock synchronization for radio access networks. He achieved this by combining optical clock frequency synchronization and clock phase caching, operating using 25.6 Gb/s commercial transceivers in a real-time field-trial demonstration on 37.6 km of dark fibre.

Further information on Dr Clark’s work and his top-scoring OFC paper can be found here.

Read about Dr Kari Clark.

Title: Picosecond-Precision Clock Synchronized Radio Access Networks using Optical Clock Distribution and Clock Phase Caching
Type: Proceedings paper
Event: Optical Fiber Communications Conference, March 2023
Location: San Diego, CA, USA

Article published: 03 April 2023

Images: © courtesy of UCL