ELDIS is a Korean company manufacturing semiconductor optical sources for optical communication. Our products are optical semiconductor devices such as injection-locking laser diodes(IL-LDs) and refective semiconductor optical amplifiers(R-SOAs) mainly used for WDM-PON system. Above all, ELDIS is the sole marker seling IL-LDs for WDM-PON system in the world. We are also producing DFB-LDs for E-PON, G-PON and WDM-PON. We aim to be the world leader in optical communication area.