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Direct modulation of 1.3-mum InGaAlAs DFB RWG lasers at 40 Gb/s is experimentally demonstrated. This laser achieves a record extinction ratio of 5 dB under 40-Gb/s modulation. Moreover, it can provide 40-Gb/s modulated transmission over 2 km
New uncooled 1,550-nm InGaAlAs electroabsorption-modulators and their laser-integration technologies were developed for 10/40-Gbit/s small-form-factor modules. For the first time, 10-Gbit/s 40-km SMF transmission and 40-Gbit/s operation were achieved up to 85degC
A novel travelling-wave semiconductor optical modulator electrically matched for InP-HBT drivers was demonstrated. It enables a 40-Gbit/s, 2-km SMF transmission with a 0.3-dB penalty at a 1.3-mum wavelength. Monolithically integrated DFB-LD produces a high-power output
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