Abstract
A tunable FOPA, based on an ultraflat near-zero dispersion profile, has been carried out in this work for application in the communication wavelength based on a dual pumping scheme. It has been observed that the dispersion profile, especially the zero-dispersion wavelength, can be easily tuned close to the pumping wavelength by properly tuning the temperature of the photonic crystal fiber configuration, and a broadband spectrum can be obtained through proper tuning of the fiber around the C-band. Our investigation unravels the fact that, through proper tuning of the temperature, a uniform gain profile with broadband can be achieved based on the optimized ultraflat profile.
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