Patent Number: 6,167,075

Title: High power, reliable optical fiber pumping system with high redundancy for use in lightwave communication systems

Abstract: An optical amplifier pumping system with built-in redundant reliability for lightwave communication system provides plural levels of redundancy. A first level of redundancy deals with redundancy in the form of plural primary laser diode sources in the lightwave communication system. A second level of redundancy deals with redundancy of multiple single mode laser emitters on the same chip or bar sufficiently segmented so as not to interfere with operation of or cause failure to adjacent or neighboring emitters on the same chip or bar. A third level of redundancy deals with redundancy of a plurality of fiber pump sources for pumping a plurality of serially connected injection signal fiber amplifiers.

Inventors: Craig; Richard R. (Victoria, CA), Waarts; Robert LG. (Fremont, CA), Welch; David F. (Menlo Park, CA), Endriz; John G. (Belmont, CA), Kuizenga; Dirk J. (Sunnyvale, CA), Sanders; Steven (Palo Alto, CA)

Assignee: SDL, Inc.

International Classification: H01S 3/094 (20060101); H01S 5/40 (20060101); H01S 3/23 (20060101); H01S 5/00 (20060101); H01S 003/0941 (); H01S 003/10 ()

Expiration Date: 12/26/2017