PT Unknown AU Vallaitis, T Koos, C Bolles, B Bonk, R Freude, W Laemmlin, M Meuer, C Bimberg, D Leuthold, J TI Quantum dot semiconductor optical amplifier at 1.3 μm for ultra-fast cross-gain modulation SE 33rd European Conference and Ehxibition of Optical Communication (ECOC’07), Berlin, Germany, September 16–20 PY 2007 BP 865 EP 865(1) DI 10.1049/ic:20070316 LA english PI Berlin, Deutschland ER