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Prof. Yasuhiko Arakawa of the University of Tokyo and Fujitsu Limited jointly developed a quantum laser which achieves 10 Gbit/s operation even when the temperature changes. The new semiconductor laser uses 3-dimensional nano-structured Quantum Dot s in the light-emitting area. The laser is capable of high-speed operation at 1.3 μm wavelengths, at temperatures from 20 °C to 70 °C. It works in optical data transmission systems, optical LAN s and Metro-access Systems . In comparison to the performance of conventional strained quantum-well lasers of the past, the new quantum dot laser achieves significantly higher stability of temperature. REFERENCES
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