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We describe the performance of 1.3-μm InGaAlAs RWG-MQW-DFB lasers and EA-DFB lasers applicable to 40G/100G Ethernet. We obtained a 3-dB-down bandwidth frequency of over 30 GHz and clear eye opening at a 40-Gb/s modulation speed.
High-performance 1.3-μm InGaAlAs electroabsorption modulators integrated with DFB lasers are developed for long-reach 100-Gbit/s Ethernet system. Four-channel, 40-km SMF transmission at 25-Gbit/s operation is demonstrated for the first time.
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