The　authors　report　an　innovative　design　of　wide　spectrum　detector　that　can　detect　visible　and　mid-infrared　spectrum,　from　0.4　to　5　mu　m,　simultaneously.　The　detector　is　designed　with　microstructure　of　various　types　of　photon　traps　fabricated　on　mid-infrared　InAs/GaSb　type-II　superlattice　materials.　Quantum　efficiency　has　been　significantly　improved　due　to　the　action　of　photon　traps　which　can　decrease　the　reflectivity　of　the　surface　of　InAs/GaSb　type-II　superlattice　down　to　less　than　5%.　Under　the　condition　of　77　K　and　200　mV　bias　voltage,　the　responsivity　of　the　detector　is　about　0.0250.45　A/W　in　the　visible　wavelength　regime　of　400-790　nm,　more　than　0.3　A/W　in　spectrum　of　800-2000　nm,　respectively.　Through　the　optimized　photon　trap　structure,　the　responsivity　of　detector　is　to　1.25　A/W　and　predominantly　improve　the　quantum　efficiency　of　the　detector　up　to　52.5%　at　3　mu　m.　(C)　2017　Published　by　Elsevier　B.V.