All-Glass Fiber Amplifier Pumped by Ultra-High Brightness Pumps

Abstract

We investigate high brightness pumping of multi-kW fiber amplifier in a bi-directional pumping configuration. Each pump outputs 2 kW in a 200 m, 0.2 NA multi-mode fiber. Specialty gain fibers, with 17 m MFD and 5-dB/meter pump absorption, have been developed. The maximum fiber amplifier output power is 2550 W, limited by multi-mode instability, with 90% O-O efficiency and M2 < 1.15. The fiber amplifier linewidth is <12 GHz. We also present kW fiber amplifier results using gain fiber with metalized fiber coating.

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Document Details

Document Type
Technical Report
Publication Date
Feb 15, 2016
Accession Number
AD1033878

Entities

People

  • Charles X. Yu
  • Oleg Shatrovoy
  • T. Y. Fan

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Amplifiers
  • Brightness
  • Coatings
  • Diameters
  • Diffraction
  • Directional
  • Efficiency
  • Lasers
  • Modulation
  • Modulators
  • Optical Fiber Lasers
  • Phase Modulation
  • Phase Modulators
  • Scattering
  • Spectra
  • Temperature Control

Fields of Study

  • Physics

Readers

  • Optical Fiber Sensing and Electromagnetic Propagation.
  • Optical Physics and Photonics.