Accession Number:

AD1034470

Title:

Photonic Lantern Adaptive Spatial Mode Control in LMA Fiber Amplifiers using SPGD

Descriptive Note:

Journal Article - Open Access

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LEXINGTON United States

Personal Author(s):

• Montoya,Juan C.
• Aleshire,Christopher E.
• Hwang,Christopher
• Fontaine,Nicolas K.
• Velazquez,Amado
• Martz,Dale H.
• Fan,T. Y.
• Ripin,Dan

Report Date:

2015-12-15

Pagination or Media Count:

8.0

Abstract:

We demonstrate adaptive-spatial mode control ASMC in few-moded double-clad large mode area LMA fiber amplifiers by using an all-fiber based photonic lantern. Three single-mode fiber inputs are used to adaptively inject the appropriate superposition of input modes in a multimode gain fiber to achieve the desired mode at the output. By actively adjusting the relative phase of the single mode inputs, near unity coherent combination resulting in a single fundamental mode at the output is achieved.

Descriptors:

• OPTICAL FIBER LASERS
• fiber optics
• amplifiers
• ADAPTIVE OPTICS
• phase modulators
• optical modulators

Subject Categories:

• Lasers and Masers
• Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE