Abstract
Multiwavelength clock recovery (CR) is desired to perform all-optical parallel processing, which has potential application in optical communication systems that use WDM technology. Fabry–Pérot semiconductor optical amplifier (FP–SOA) can perform the similar filter function as passive FP filter, and can simultaneously provide gain for oscillation pulses in the cavity; it is essentially an active filter. We experimentally demonstrated simultaneous multiwavelength all-optical CR from input 36.47-Gb/s pseudo-return-zero (PRZ) data and non-return-zero (NRZ) data using a single multi-quantum-well (MQW) FP-SOA with facets reflectivity of 30%. The presented multiwavelength CR scheme is also suitable for PSK signals. Dual-channel CR from input two channels 36.47-Gb/s 2 23−1 NRZ-DPSK data located at different wavelength is experimentally demonstrated. This scheme is transparent for data formats, which is very important for next generation optical networks.
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