ALGAINP-GAINP COMPRESSIVELY STRAINED MULTI-QUANTUM-WELL LIGHT-EMITTING-DIODES FOR POLYMER FIBER APPLICATION

We have studied the optical properties of the AlGaInP-GaInP light-emit ting diodes (LED's), with a compressively strained multiquantum-well ( CSMQW) active layer, emitting at 650 nm, It was found that by introduc ing a compressive strain into the MQW active layer, we can achieve a m uch faster operation speed and a higher output power. It was also foun d that a +0.33% compressive strain can reduce the 10%-90% rise time an d/or fall time from 50 to 15 ns, Furthermore, the +0.33% compressive s train can also increase the output power of the MQW AlGaInP-GaInP LED by more than 40%. Such a high operation speed and high output power LE D is potentially useful in polymer-based optical fiber communication.