1.5-/spl mu/m InGaAsP-InP multigain-levered-MQW-DFB-LD with high-efficiency and large-bandwidth FM response

A 1.5-/spl mu/m multigain-levered (MGL)-MQW-DFB-LD which utilizes a new concept of multigain-levering is proposed and realized by two-step selective MOVPE growth. The device consists of three sections with different bandgap energies. High- and flat-FM-efficiency value of 10 GHz/mA was theoretically and experimentally demonstrated up to the 2 GHz modulation frequency.<
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