L-band wavelength-tunable fiber laser mode-locked by all polarization-maintaining nonlinear polarization rotation

Abstract

We achieved the first demonstration of a wavelength-tunable mode-locked fiber laser in the L-band using allpolarization-maintaining (all-PM) nonlinear polarization rotation (NPR). The all-PM configured laser features excellent repeatability and reliability. By increasing the pump power from 82.5 mW to 135 mW, a center wavelength-tuning from 1576.2 nm to 1592.2 nm is obtained. This non-mechanical tuning mechanism opens new possibilities for L-band wavelength-tunable lasers and their applications.