Abstract
A strong polarization dependence of pulse compression was experimentally observed using an InGaAsP/InP slab-type coupled waveguide structure consisting of two dissimilar waveguides. This polarization dependence strongly demonstrated that the observed pulse compression results from dispersion compensation due to group velocity dispersion (GVD) associated with supermodes. High mode-conversion efficiency over a wide spectral band in mode converters and the possibility of continuous control of supermode GVD by current injection were demonstrated by numerical simulation.
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