Corning Incorporated

Douglas E Harshbarger

John Steele Abbott, Iii

Daniel Aloysius Nolan

Carlton Maurice Truesdale

Leo C Thomas

A multimode optical fiber having a first laser bandwidth greater than 220 MHz.km in the 850 nm window, a second laser bandwidth greater than 500 MHz.km in the 1300 nm window, a first OFL bandwidth of at least 160 MHz.km in the 850 nm window, and a second OFL bandwidth of at least 500 MHz.km in the 1300 nm window is disclosed. The multimode fiber is capable of operating in telecommunication systems employing both LED power sources and high power laser sources. Methods of making and testing the multimode optical fiber are also disclosed.

Laser optimized multimode fiber and method for use with laser and LED sources and system employing same

A single mode waveguide coupling to a multimode fiber of a high-bandwidth local optical network is made by a tapered coupler that expands the spot size of the propagating beam to fill additional modes of the multimode fiber. The tapered coupler has a core surrounded by inner and outer layers of cladding. The core and the inner cladding layer are drawn down along their length to force light from the core into the surrounding inner cladding layer. The outer cladding layer confines the expanded beam within the core and inner cladding layer.

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Corning, NY, United States of America

Douglas E Harshbarger