The article includes the greater effort such as quasi Photonic crystal fiber (PCF) with tellurite elliptical core structure is numerically investigated. The performances of the new form of PCF are inferred by calculating the desired optical parameters. As a whole, the PCF provides a significant effect on optical properties for two different modes. This model provides a high nonlinearity of 1.54 × 10⁴ W⁻¹Km^-1 and power fraction of 98.64% at the wavelength of 0.6 μm. This proposed model promises for better impact in sensing, different type of imaging applications, signal processing and nonlinear applications. All the numerical calculations are carried out by employing finite element method (FEM).