Measurement of UV-induced Birefringence by Thermal Annealing of a Distributed Bragg Reflector Fiber Laser

Abstract

The photoinduced index change of a grating in a distributed Bragg reflector (DBR) fiber laser was annealed at temperatures up to 700 deg C. In monitoring the longitudinal modes of the laser during annealing, two distinct emission bands emerged, representing the polarization dependent reflectivities of the grating being thermally processed. By fitting the emission bands to a Gaussian, a measure of the fibers nominal (~ 7 x 10[expn-6]) and induced (~ 5 x 10[expn-6]) birefringence was determined.

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Document Details

Document Type
Technical Report
Publication Date
Jan 15, 2019
Accession Number
AD1066327

Entities

People

  • Gary A. Miller

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Annealing
  • Argon Lasers
  • Bandwidth
  • Bragg Gratings
  • Color Centers
  • Distributed Bragg Reflectors
  • Emission Spectra
  • Fiber Bragg Gratings
  • Laser Resonators
  • Lasers
  • Optical Fiber Lasers
  • Optical Fibers
  • Reflection
  • Reflectivity
  • Reflectors
  • Refractive Index
  • Spectra

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Powder metallurgy of Titanium alloys.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers