We propose a method to reconstruct the grating period in fiber grating structures from the field reflection coefficient or the related impulse response. The method is based on the joint time–frequency signal analysis and uses the Wigner–Ville and the spectrogram distributions. Results show good agreement between exact and reconstructed functions.
© 1998 Optical Society of America
(050.2770) Diffraction and gratings : Gratings
(070.5010) Fourier optics and signal processing : Pattern recognition
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
Miguel A. Muriel, José Azaña, and Alejandro Carballar, "Fiber grating synthesis by use of time-frequency representations," Opt. Lett. 23, 1526-1528 (1998)