Chirped gap solitons in fiber Bragg gratings with polynomial law of nonlinear refractive index

The objective of the present study is to examine behaviors chirped optical solitons in fiber Bragg gratings (BGs) with dispersive reflectivity. form nonlinear refractive index represents polynomial law nonlinearity. By virtue phase-matching condition, discussed model coupled Schrödinger equation reduced an integrable form. Consequently, having various profiles such as W-shaped, bright, dark, kink and anti-kink are derived. Further this, chirp associated these soliton structures extracted. impact reflectivity, self-phase modulation cross-phase on pulse propagation investigated it induced that changes cause a marked rise amplitude which subject minor variations by physical evolutions described along corresponding pave way for possible applications field BGs.