Patent Number: 7,787,729

Title: Single mode propagation in fibers and rods with large leakage channels

Abstract: Various embodiments include large cores fibers that can propagate few modes or a single mode while introducing loss to higher order modes. Some of these fibers are holey fibers that comprising cladding features such as air-holes. Additional embodiments described herein include holey rods. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc. and may be used for example for micromachining.

Inventors: Dong; Liang (Ann Arbor, MI), Wong; William (Ann Arbor, MI), Fermann; Martin E. (Dexter, MI)

Assignee: Imra America, Inc.

International Classification: G02B 6/02 (20060101)

Expiration Date: 8/31/12018