Objective.The investigations that are developed in this laboratory are divided in two main fields: optical metrology and applications of optical fibers. In the first field, the aim of these works is the development of optical methods, in particular those based in the speckle phenomena, with application in experimental mechanics, nondestructive testing and materials science. The group is also known for its contributions to the development of digital image algorithms, to automate the analysis of the data obtained with the optical techniques previously mentioned and to facilitate their application in the area of industrial inspection. In the optical fiber field, we are devoted to the experimental study of all-fiber lasers, the theoretical and experimental analysis of different photonic mathematical operators performed with optical fibers, especially in the fractional domain, and the characterization of light pulses.

Optical

  • Holographic interferometry
  • Speckle interferometry
  • Dynamic speckle analysis

Digital image processing

  • Numerical analysis of interference patterns
  • Speckle noise reduction
  • Measurement of optical phase distributions
  • Unwrapping of optical phase distributions

Applications in experimental mechanics and materials science

  • Vibration analysis
  • Transient and static deformation analysis
  • Nondestructive testing and defect analysis
  • Coating adhesion study
  • Residual stress measurement

All-fiber lasers

  • Q-switched fiber lasers
  • Mode-locked fiber lasers
  • Acousto-optic devices

Photonic signal processing

  • Mathematical operators in the fractional domain
  • Phase recovery of light pulses
  • Fiber grating design for specific applications
  • Applications of optical fibers

Encryption

  • Time domain encryption in optical fiber links
  • Wavelength division multiplexing encryption
  • Wigner distribution function (WDF) analysis