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The modulation characteristics of 1.3-μm InAs/GaAs high-density quantum-dot lasers is presented. The eight-stacked high-density quantum-dot layers provided high net modal gain of 46 cm-1. Fabricated Fabry-Perot lasers showed the 25-Gbps direct modulation.
We report on newly developed high-density quantum-dot lasers that provide extremely temperature-insensitive 10.3 Gb/s operation and higher-speed operation up to 20 Gb/s which is the first demonstration in 1.3 mum quantum-dot lasers.
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