Research

Ultrafast all-optical clock recovery based on phase-only linear optical filtering

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Abstract

We report on a novel, efficient technique for all-optical clock recovery from RZ-OOK data signals based on spectral phase-only (all-pass) optical filtering. This technique significantly enhances both the recovered optical clock quality and energy efficiency in comparison with conventional amplitude optical filtering approaches using a Fabry-Perot filter. The proposed concept is validated through recovery of the optical clock from a 640 Gbit/s RZ-OOK data signal using a commercial linear optical waveshaper. (C) 2014 Optical Society of America

OPTICS Atomic clocks Energy efficiency Optical variables measurement All pass All-optical clock recovery Data signals Fabry-Perot filters Linear optical Optical clocks Optical filtering Ultra-fast Optical filters