NUSOD '06 proceedings of the 6th International Conference on Numerical Simulation of Optoelectronic Devices : 11-14 September 2006, Singapore / editors/chairs, Joachim Piprek and Siu-Fung Wu ; technical co-sponsor, the IEEE Lasers and Electro-Optics Society. - Piprek, Joachim; Yu, S. F. (Siu Fung) (IEEE, 2006)