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We have proposed and implemented an all-polarization-maintaining modelocked fiber laser operating in all-normal-dispersion regime based on nonlinear amplifying loop mirror. The required spectral filtering on the circulating chirped pulse was realized with a Lyot filter that was constructed by two carefully angle-spliced polarization-maintaining single-mode fibers within the laser resonator. The intrinsic inline fiber optical filter exhibited desirable features such as compact layout, adjustabledoi:10.1109/jphot.2021.3079417 fatcat:ca75uti4rjcgrmb7arqbdc2zku