Wavelength　switchable　and　dual-wavelength　soliton　operations　are　demonstrated　in　an　erbium-doped　fiber　laser　with　three　pieces　of　TI　Bi2Se3　polyvinyl　alcohol　(Bi2Se3-PVA)　film.　Wavelength　switchable　operation　from　1532　to　1557　nm　could　be　achieved　just　by　adjusting　the　pump　power.　With　the　appropriate　settings　of　PC　and　pump　power,　a　novel　dual-wavelength　soliton　operation　was　observed.　The　dual-wavelength　pulses　operate　at　different　mode-locked　states.　One　is　the　single　pulse　mode-locking　operation　at　1532　nm,　and　the　other　one　is　the　bound-soliton　states　at　1557　nm.　However,　the　dual-wavelength　soliton　operation　cannot　be　stable　for　a　long　time.　The　numerical　results　demonstrate　that　the　separations　of　bound　pulses　have　small　variation　and　that　the　phase　difference　of　bound　pulses　appear　jumping　change　of　pi.