Hafeez Younis, Marwan, مروان, Abdul Ghafoor Abdullah, and عبدالغفور. 2012. “Effect of Laser Pulse Capacity (titanium-Blue Sapphire) on Propagation Properties in Photonic Crystal Fibers”. Journal of Education and Science (JES) 25 (3):120-35. https://doi.org/10.33899/edusj.2012.59215.