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A three-section distributed Bragg reflector (DBR) laser operating in the 1550-nm band is reported, based on a quantum-dot gain medium. The device is fabricated using a standard production, full wafer process to achieve a valid comparison with quantum-well-based DBR lasers. A tuning range of 8 nm and a maximum output power of 20 mW are achieved.
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Robbins et al. (2008) studied this question.
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