Eavesdropping time and frequency: phase noise cancellation along a time-varying path, such as an optical fiber
Eavesdropping time and frequency: phase noise cancellation along a time-varying path, such as an optical fiber
Single-mode optical fiber is a highly efficient connecting medium, used not only for optical telecommunications but also for the dissemination of ultra-stable frequencies or timing signals.In 1994, Ma, Jungner, Ye and Hall described a measurement and control system to deliver the same optical frequency at two places, namely the two …