Large estimated frequency response increase from deep potential well strained quantum well lasers

Effect of potential well depth on the maximum modulation bandwith has been analyzed for strained quantum well lasers emitting at 1.3 μm. The frequency response depends largely on the potential well depth. The maximum modulation bandwith of a deep-potential single-well SCH laser designed on a ternary substrate is estimated to be 25 GHz while that of the conventional InP based laser is 15 GHz. In a four-well case, the estimated bandwith of a laser designed on a ternary substrate is estimated to be 80 GHz.