Sub-Nanosecond Clock and Data Recovery in an Optically-Switched Data Centre Network

44th European Conference on Optical Communication (ECOC Post-deadline paper) |

We demonstrate a clock and data recovery technique that achieves <625ps locking time for 25.6Gb/s-OOK and show its robustness under worst-case data centre temperature variation. The locking time was improved by 12×, making nanosecond optical switching viable in data centres.