Soliton crystal record-high data transfer rate. The crystals were embedded in a standard optical fiber, according to scientists at the Swinburne University of Technology, published in the journal Nature Communications.
Telecommunication networks use many different frequencies or spectrum colors to transmit as much information as possible. However, in existing networks, a separate laser is required for each color of the spectrum – their installation is complicated and expensive. Therefore, increasing the speed of data transmission through an optical fiber in its current form is a problem.
In a new work, researchers used soliton crystals, microcells, which in the optical fiber played the role of a frequency comb. Such a comb allowed the replacement of several lasers.
By integrating a frequency comb from soliton crystals into an optical fiber, the researchers were able to generate a set of frequencies that were equally distant from each other, and their phase and amplitude were easy to control. As a result, they were able to record an increase in the data transfer rate to 44.2 Tbps.
“We managed to create one of the most efficient data transmission systems implemented in a standard telecommunication network – given the record volume of information that can be encoded and transmitted in optical fiber with minimal data loss”.
Roberto Morandotti, lead author of the research
The authors of the work believe that the system they created can be implemented by telecom operators within five years – the necessary micro-ring resonators for it have already been created and are commercially available.