This paper reviews recent developments in optical signal processing based on quantum-dot semiconductor optical amplifiers. With an ultrafast gain response unique to quantum dots, an optical regenerator having receiver-sensitivity improving capability of 4 dB at a BER of 10-9 and operating speed of > 40 Gb/s has been successfully realized with an SOA chip. This performance achieved together with simplicity of structure suggests a potential for low-cost realization of regenerative transmission systems.
© 2005 Optical Society of America
(190.0190) Nonlinear optics : Nonlinear optics
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(250.0250) Optoelectronics : Optoelectronics
(250.5980) Optoelectronics : Semiconductor optical amplifiers
T. Akiyama, K. Kawaguchi, M. Ekawa, M. Sugawara, H. Kuwatsuka, H. Sudo, K. Otsubo, S. Okumura, A. Uetake, F. Futami, and S. Watanabe, "Recent Progress in Quantum-Dot Semiconductor Optical Amplifiers for Optical Signal Processing," in Optical Amplifiers and Their Applications, Technical Digest (CD) (Optical Society of America, 2005), paper MB1.
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