Network architectures, management, and applications IV : 5-7 September, 2006, Gwangju, South Korea / Yong Hyub Won ... [et al.], chairs/editors ; organized and sponsored by OSK, Optical Society of Korea (South Korea) ... [et al.] ; cosponsored by COS, Chinese Optical Society / Bellingham (Wash.) : SPIE , cop. 2006