By using two orthogonally-polarized pump beams, an ultrabroad tunable wavelength converter is demonstrated with uniform efficiency and equalized signal-to-noise ratio (SNR) through four-wave mixing (FWM) in an 1500-nm semiconductor optical amplifier (SOA). This device allows the conversion of the input data signal to lower or higher frequencies with nearly-constant conversion efficiency and SNR over a 10.66 THz tuning range. This result is a significant improvement of both the conversion efficiency and the SNR as compared with the conventional FWM-based wavelength converters. We have also investigated the effect of parameters of both input power and wavelength of pump P2 on conversion efficiency and SNR of the wavelength-converted signals.
A wavelength conversion experiment based on Bragg grating fiber external cavity laser at 2.5 Gb/s rate is introduced. The primary result of 5 nm up-conversion and clear eye diagram is obtained. The laser is sealed in common DIP-14 package. This method shows advantages of simplicity and stable converted wavelength.