Time-dependent Modeling of Brillouin Scattering in Passive Optical Fibers Pumped by a Chirped Diode Laser

Abstract

The coupled partial differential equations describing stimulated Brillouin scattering (SBS) in a fiber are solved numerically. The SBS builds up from random thermal phonons when a laser beam of sufficient power is incident upon the fiber. We show that the SBS can be suppressed by linearly ramping the laser frequency at a rate of up to 1016 Hz/s. High chirp rates lead to an increased Brillouin spectral bandwidth and decreased gain. The resulting SBS suppression agrees well with an adiabatic model and with experimental results.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2012
Accession Number
ADA569364

Entities

People

  • Carl E. Mungan
  • Jeffrey O. White
  • Steven D. Rogers

Organizations

  • United States Army Research Laboratory

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Brillouin Scattering
  • Differential Equations
  • Electric Fields
  • Electromagnetic Scattering
  • Electronic Counter Countermeasures
  • Equations
  • Fibers
  • Frequency
  • Information Operations
  • Laser Beams
  • Laser Diodes
  • Lasers
  • Optical Fibers
  • Partial Differential Equations
  • Scattering
  • Simulations

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy