Mouhssin, Maache2020-02-042020-02-042017http://dspace.univ-msila.dz:8080//xmlui/handle/123456789/19210In this paper, we have proposed a design for slow light in a modified photonic crystal waveguide by inserting reduced air holes along the middle of the waveguide with a half period of the lattice and by shifting the second rows of holes toward the center of the modified waveguide. A wideband slow light with a high group index and low group velocity dispersion has been achieved. A nearly constant group index of 21, 20, 35.5 and 65 over 20.3 nm, 15.6 nm, 9.5 nm, 5.3 nm bandwidth in the environment of 1550 nm, respectively, are also obtained.Photonic crystal Waveguide Slow lightGeometrically tunable slow light based on a modified photonic crystal waveguideArticle