Abstract

Expanded beam fiber-optic couplers offer great convenience for fiber cable connection, which is very desirable for local area network and other short-haul applications. But because most short-haul fibers are usually multimode, the large core causes significant aberration losses in conventional designs such as aspherics and GRIN lenses. Based on Liouville's theorem applied to nonimaging optics, we have developed a class of high efficiency expanded beam multimode fiber-optic coupler.

© 1988 Optical Society of America