Abstract
We demonstrate the first InAs/GaAs quantum-dot (QD) superluminescent diode (SLD) monolithically grown on both Ge and Si substrates by molecular beam epitaxy. The QD SLDs on Ge substrates exhibit a 3 dB emission bandwidth of ~60 nm with output power of 27 mW at room temperature, and operates up to 100 °C. We also report the first QD SLD monolithically grown on a Si substrate. A two-section ridge structure has been used to achieve a close-to-Gaussian emission spectrum of 114 nm centered at ~1255 nm wavelength, with a maximum output power of 2.6 mW at room temperature.
© 2015 Optical Society of America
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