We demonstrate broadband superluminescent diode at ~1.6-mum peak emission wavelength using InAs-InAlGaAs quantum-dash-in-well structure on InP substrate. The fabricated device exhibits the close-to-Gaussian emission with a bandwidth of up to 140 nm. The device produces a low spectrum ripple of 0.3dB and an integrated power of 1.7 mW with the corresponding bandwith of 110 nm measured at 20 degC under 8 kA/cm2
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Djie et al. (2006) studied this question.
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