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We have developed a high-speed electroabsorption modulator integrated distributed feedback (EA/DFB) lasers. To realize the high-speed, small-footprint, low-power-consumption and cost-effective semiconductor light source, we have investigated the several key technologies. Newly developed 1.3 mum range 25 Gbps and 43 Gbps EA/DFB laser showed a good transmission performance over 10 km single mode fiber...
We developed a high-speed (over 30 GHz) and high-responsivity (nearly 0.8 A/W) back-illuminated PD with a newly developed high reflective reflector, and successfully demonstrated an error free 25-Gbps 10-km SMF transmission.
Uncooled 1300-nm range 25-Gbps EA/DFB lasers that support cost-effective optical transmitter for 100-Gbps Ethernet has been realized. A wide temperature ranged 12-km transmission with over 9.6-dB dynamic extinction ratio was demonstrated.
Direct modulation at 40 Gb/s of a 1.3-mum InGaAlAs distributed feedback ridge waveguide laser is experimentally demonstrated. By combination of the high differential gain of an InGaAlAs multiquantum well active layer, a short cavity length of 100 mum, and a low-resistance notch-free grating, it achieves high bandwidth of 29 GHz and high-extinction ratio of 5 dB at 40-Gb/s modulation. Moreover, the...
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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