First order surface grating fiber coupler under the period chirp and apodization functions variations effects

<p>The paper has demonstrated the first order surface grating fiber coupler under period chirp and apodization functions variations effects. The Fiber transmittivity/reflectivity, index change mesh transmission cross-section are clarified against length with quadratic/cubic root Gaussian/uniform functions. delay dispersion simulated wavelength function. As well as output pulse intensity is time peak range also by OptiGrating simulation software.</p>