Compression of Linearly Chirped Gaussian Optical Pulses Induced by Microwave Magneto-Static Waves

Abstract

According to the coupled-mode theory of magneto-optic (MO) effects as a perturbation, the coupling equations for optical pulses with microwave magneto-static waves (MSWs) in MO film waveguides are presented, which can be used to analyze MSW-based optical pulse signal processing. For the case of a continuous MSW, the analytic expression for the complex amplitudes of diffracted and undiffracted optical pulses is obtained in frequency domain and then the compression characteristics of linearly chirped Gaussian optical pulses are studied in detail. The peak intensity of diffracted optical pulses is approximately proportional to the matching diffraction efficiency. With the increase of chirp parameters, the diffracted pulse waveforms go through two stages: single peak compression and multi-peak expansion. #