All-Optical Clock Recovery at 160 Gbit/s and beyond, Based on a Fabry-Pérot Filter and Self-Phase Modulation Effect

We propose a simple all-optical clock recovery technique for short data bursts at 160 Gbit/s, and beyond, which is based on the concept of the use of a Fabry-Perot filter for partially filling the "0s" of the incoming data stream. The novel feature of the technique is the use of a highly nonlinear fiber followed by an optical band-pass filter at the signal's carrier wavelength that acts as an ultra-fast limiter, removing drastically the amplitude modulation of the Fabry-Perot filter's output and providing a clock signal of high quality