T. Akiyama

Pattern‐effect‐free amplification and cross‐gain modulation achieved by using ultrafast gain nonlinearity in quantum‐dot semiconductor optical amplifiers

Y. Nakata, T. Akiyama, N. Hatori, 2003 .

1.55-μm polarization-insensitive quantum dot semiconductor optical amplifier

M. Ekawa, M. Sugawara, Y. Arakawa, 2008, 2008 34th European Conference on Optical Communication.

Quantum-Dot Semiconductor Optical Amplifiers for High Bit-Rate Signal Processing over 40 Gbit/s

H. Ishikawa, N. Hatori, M. Sugawara, 2001, Technical Digest. CLEO/Pacific Rim 2001. 4th Pacific Rim Conference on Lasers and Electro-Optics (Cat. No.01TH8557).

Quantum-Dot Semiconductor Optical Amplifiers With Polarization-Independent Gains in 1.5-$\mu$ m Wavelength Bands

M. Ekawa, M. Sugawara, Y. Arakawa, 2008, IEEE Photonics Technology Letters.

Application of spectral-hole burning in the inhomogeneously broadened gain of self-assembled quantum dots to a multiwavelength-channel nonlinear optical device

H. Ishikawa, O. Wada, M. Sugawara, 2000, IEEE Photonics Technology Letters.

Wavelength-tuning-free 10-Gb/s operation of a silicon-integrated resonantly-enhanced modulator and single-mode laser

S. Sekiguchi, T. Kurahashi, K. Morito, 2012, The 9th International Conference on Group IV Photonics (GFP).

An ultrawide-band (120 nm) semiconductor optical amplifier having an extremely-high penalty-free output power of 23 dBm realized with quantum-dot active layers

M. Ekawa, A. Kuramata, H. Imai, 2004, Optical Fiber Communication Conference, 2004. OFC 2004.

High-speed and temperature-insensitive operation in 1.3-µm InAs/GaAs high-density quantum dot lasers

M. Ishida, M. Yamaguchi, K. Nishi, 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

Symmetric highly efficient (/spl sim/0 dB) wavelength conversion based on four-wave mixing in quantum dot optical amplifiers

M. Sugawara, H. Kuwatsuka, Y. Nakata, 2002, IEEE Photonics Technology Letters.