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

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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 15, 2015
Accession Number
AD1034470

Entities

People

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

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acousto-Optic Modulators
  • Algorithms
  • Amplifiers
  • Amplitude
  • Arrays
  • Capillary Tubes
  • Control Systems
  • Gain
  • Insertion Loss
  • Intensity
  • Laser Beams
  • Lasers
  • Modulators
  • Optical Fiber Lasers
  • Optical Modulators
  • Optics
  • Phase Modulators

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Image Processing and Computer Vision.
  • Optical Fiber Sensing and Electromagnetic Propagation.