Wavelength tunable all-optical clock recovery using a fiber parametric oscillator

We report a wavelength-tunable all-fiber optical clock recovery scheme that utilizes a fiber parametric oscillator. The data rate in this scheme is limited only by the time response of the Kerr nonlinearity of the fiber, which is in the femtosecond range. As a result, our clock recovery system is expected to be scalable to data rates that are in the Tbps range. In addition, the recovered clock is wavelength tunable over the whole EDFA bandwidth. The key part of our system is a singly resonant fiber-optic parametric oscillator (FOPO) which is pumped by fixed-wavelength pulses. A tunable filter selects the desired wavelength of the clock pulses generated by four wave mixing processes in the FOPO