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US 5,359,447 AGranted
Optical communication with vertical-cavity surface-emitting laser operating in multiple transverse modes
AssigneeHewlett-Packard Company
InventorsKenneth H. Hahn, Michael R. T. Tan, Shih-Yuan Wang
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Abstract
An optical communication system using a relatively large-area vertical-cavity surface-emitting laser. The laser has an opening larger than about eight micrometers and is coupled to a multimode optical fiber. The laser is driven into multiple transverse mode operation, which includes multiple filamentation as well as operation in a single cavity.
Claims6
An optical communication network comprising:
- a vertical-cavity, surface-emitting semiconductor laser structure having an aperture larger than eight micrometers through which an optical signal may be emitted;
- a power supply that provides a bias current to drive the laser into a multiple transverse mode of Operation in which the laser is responsive to a signal carrying data to provide an optical signal modulated with the data and to emit the optical signal through the aperture;
- and
- a multimode Optical medium optically coupled to the laser to carry the optical signal from the laser to a remotely-located receiver.
1 more element
Dependencies are inferred from the claim text.