We　demonstrated　an　all-normal-dispersion　Yb-doped　mode-locked　fiber　laser　based　on　Bi2Se3　topological　insulator　(TI).　Different　from　previous　TI-mode-locked　fiber　lasers　in　which　TIs　were　mixed　with　film-forming　agent,　we　used　a　special　way　to　paste　a　well-proportioned　pure　TI　on　a　fiber　end-facet.　In　this　way,　the　effect　of　the　film-forming　agent　could　be　removed,　thus　the　heat　deposition　was　relieved　and　damage　threshold　could　be　improved.　The　modulation　depth　of　the　Bi2Se3　film　was　measured　to　be　5.2%.　When　we　used　the　Bi2Se3　film　in　the　Yb-doped　fiber　laser,　the　mode　locked　pulses　with　pulse　energy　of　0.756　nJ,　pulse　width　of　46　ps　and　the　repetition　rate　of　44.6　MHz　were　obtained.　The　maximum　average　output　power　was　33.7　mW.　When　the　pump　power　exceeded　270　mW,　the　laser　can　operate　in　multiple　pulse　state　that　six-pulse　regime　can　be　realized.　This　contribution　indicates　that　Bi2Se3　has　an　attractive　optoelectronic　property　at　1　mu　m　waveband.　(C)　2014　Optical　Society　of　America