Theimprovementofopticalfiberfabricationtechnolo gyopensupopportunityforopticalcommunicationin theS band[1].TheemissionassociatedwithTm3 tran sition3H4to3F4coversthespectralrange1440nm 1520nm[2].HenceTm3 dopedfiberamplifier(TD FAs)couldbedesirablefortheS band(1460nm 1520 nm)opticalamplificationandhasattractedconsiderableattentionasameansofextendingthetransmission bandwidthofopticalfibersbeyondtherangeavailable fromEr3 dopedfiberamplifiers(EDFAs)[3].Avariety ofpumpingschemesandmethodsh…