Abstract
InGaAsP LEDs at 1.3 μm (the fiber dispersion minimum) are attractive alternatives to lasers in optical transmission systems. In front emitting LEDs made with a small diameter p-surface contact, the light can be efficiently coupled into an optical fiber positioned above the surface. The p contact is usually isolated with a dielectric layer. LEDs of this type have been shown to be exceptionally reliable at current densities up to 8 kA/cm2, with projected median lives >108 h at 60°C.1 InGaAsP LEDs are not subject to dark line defect formation from ex- isting threading dislocations and from processing induced damage as are GaAIAs LEDs. They, therefore, do not exhibit the infant mortality which is a major problem in the yield or reliability of GaAIAs devices. However, the formation of dark spot defects (DSD) becomes an important failure mode at high current densities.
© 1982 Optical Society of America
PDF ArticleMore Like This
R. H. Saul
WDD1 Optical Fiber Communication Conference (OFC) 1982
T. Uji, Y. Isoda, Y. Inomoto, A. Suzuki, J. Hayashi, and H. Nomura
MJ3 Optical Fiber Communication Conference (OFC) 1984
Ikuo Mito, Mitsuhiro Kitamura, Kenichi Kobayashi, and Kohroh Kobayashi
ThBB3 Optical Fiber Communication Conference (OFC) 1982