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.
In this paper, we propose and experimentally demonstrate a novel technique to generate ultrawideband (UWB) doublet pulses by exploiting the cross-phase modulation (XPM) in a semiconductor optical amplifier (SOA). The key component in the proposed system consists on an integrated SOA Mach-Zehnder interferometer (MZI) pumped with a Gaussian pulse modulated… (More)
Generator based on the combination of doublet pulses ". Temporal self-imaging effect for periodically modulated trains of pulses " Generator based on the non-linear effects of an SOA-integrated structure ". Employing Cross-Phase Modulation in a Semiconductor Optical Amplifier Mach–Zehnder interferometer ". Experimental Electrically Reconfigurable… (More)
—By spectral analysis, and using joint time-frequency representations, we present the theoretical basis to design invariant bandlimited Airy pulses with an arbitrary degree of robustness and an arbitrary range of single-mode fiber chromatic dispersion. The numerically simulated examples confirm the theoretically predicted pulse partial invariance in the… (More)
In this paper we apply the formalism of the analytical signal theory to the Schrödinger wavefunction. Making use exclusively of the wave-particle duality and the principle of relativistic covariance, we obtain the Klein-Gordon and Schrödinger equations. We actually derive the form of the quantum energy and momentum operators for one particle without using… (More)