A Multi-Section Quantum-Dot Semiconductor Optical Amplifier for Ultrabroad-Band Gain-Flattened Low-Noise Amplification |
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| Authors: | Tomoyuki Akiyama Mitsuru Sugawara Koji Otsubo Hiroji Ebe Nobuaki Hatori Yasuhiko Arakawa |
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| Institution: | 1. Fujitsu Ltd., Kanagawa, Japan
2. University of Tokyo, Tokyo, Japan |
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| Abstract: | We propose an ultrabroad-band 1R regenerator utilizing a multi-section quantum-dot semiconductor optical amplifier.Due to the reduced electron states, quantum dot is beneficial in broadening the gain spectrum and lowering the noise figure. Combining this with a multi-section structure drastically improves the gain equality among the different bound states, leading to an increase in the maximum output power and an improvement of the noise figure. |
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