In　this　paper,　a　38.7　W　amplified　(24.8　W　compressed)　picosecond　ytteribium-fiber　chirped-pulse　amplification　system　at　1030.3　nm　is　demonstrated　using　chirped-volume　Bragg　grating　for　the　compressor　and　photonic　crystal　fiber　for　the　spectral　stretcher.　For　optimizing　compressed　pulse　duration,　the　spectral　width　is　fine-tuned　by　controlling　the　length,　dispersion　and　the　parameters　of　the　nonlinear　of　the　photonic　crystal　fiber,　which　is　an　additional　dispersion　compensation　method　to　eliminate　the　residual　dispersion　in　the　chirped-pulse　amplification　system.　As　a　result,　the　chirped　pulse　width　of　330　ps　is　amplified　in　ytteribium-doped　fiber　amplifier　and　subsequently,　re-compressed　to　1.1　ps　duration　corresponding　to　the　peak　power　of　1.1　MW.