By newly introducing InGaP tensile strained layers as barriers of InAsP compressively strained multiple quantum wells and a thin InP intermediate layer between InGaP and InAsP. high crystalline quality InAsP/InP/InGaP strain-compensated multiple quantum wells were successfully grown by metal organic chemical vapour deposition on a (100) InP substrate. A very low threshold current density of 300A/cm(2) was obtained for triple InAsP/InP/InGaP quantum well lasers emitting at 1.3 mu m with a GaInAsP seperate-confinement layer.