Analysis and suppression of nonlinear frequency modulation in an optical frequency-domain reflectometer

Opt Express. 2009 Mar 30;17(7):5845-51. doi: 10.1364/oe.17.005845.

Abstract

A new method for monitoring the nonlinearities perturbing the optical frequency sweep in high speed tunable laser sources is presented. The swept-frequency monitoring system comprises a Mach-Zehnder interferometer and simple signal processing steps. It has been implemented in a coherent optical frequency domain reflectometer which allowed to drastically reduce the effects of nonlinear sweep, resulting to a spatial resolution enhancement of 30 times.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Computer-Aided Design
  • Equipment Design
  • Equipment Failure Analysis / instrumentation*
  • Equipment Failure Analysis / methods
  • Interferometry / instrumentation*
  • Lasers*
  • Nonlinear Dynamics
  • Photometry / instrumentation*
  • Reproducibility of Results
  • Sensitivity and Specificity