Anmol S Nijjar

US Patent:

20110058250, Mar 10, 2011

Filed:

Apr 9, 2010

Appl. No.:

12/757737

Inventors:

Chang Liu - Shanghai, CN
Jason N. Farmer - Vancouver WA, US
Anmol Nijjar - Fremont CA, US
Xiaojun Li - Shanghai, CN

Assignee:

nLight Photonics Corporation - Vancouver WA

International Classification:

H01S 3/067

US Classification:

3593413

Abstract:

A stable, single mode fiber amplifier is described. The amplifier consists of a seed source, a passive single clad multimode fiber, an active double clad multimode fiber or a multimode fiber horn and a semiconductor laser pump source. The passive fiber is packaged on a mandrel with a compound radius of curvature such that high order modes in the fiber are stripped from the core leaving only the fundamental mode. This fiber is then spliced to a multimode active fiber of similar core diameter. By exciting only the fundamental mode of this active fiber, stable single mode amplification is achieved.

US Patent:

D678788, Mar 26, 2013

Filed:

Dec 19, 2011

Appl. No.:

29/408905

Inventors:

Joe Kollmann - Portland OR, US
Jason Farmer - Vancouver WA, US
Jeremy Young - Independence OR, US
Anmol Nijjar - Vancouver WA, US
Scott Keeney - Vancouver WA, US

Assignee:

nLight Photonics Corporation - Vancouver WA

International Classification:

1004

US Classification:

D10 70