%0 Journal Article %T A tunable and switchable wavelength spacing of multi-wavelength erbium doped fiber laser by exploiting nonlinear polarization rotation %A Zhang, Min %A Hu, Qifan %A Zheng, Wanjun %J Proceedings of SPIE %V 9655 %P 965549-965549-7 %@ 0277-786X %D 2015-07-01 %I SPIE %~ DeepDyve