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


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1034470.pdf


Report Date : 15 Dec 2015


Pagination or Media Count : 8


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