Noise in semiconductor laser amplifiers with quantum box structure |
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| Authors: | Komori K. Arai S. Suematsu Y. |
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| Affiliation: | Dept. of Phys. Electron., Tokyo Inst. of Technol. ; |
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| Abstract: | The low-noise properties of a quantum-box traveling-wave semiconductor laser amplifier (QB-TW-SLA) are discussed. The gain and population-inversion parameter of a quantum-box structure are precisely expressed using density matrix theory. Due to sharp gain characteristics as well as a small population inversion parameter, dominant two-beat noise is significantly reduced, even in a solitary device without a narrow bandpass filter. The noise figure can be reduced to 3.5 dB |
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