title: Novel slow light waveguide with controllable delay-bandwidth product and utra-low dispersion.
abstract: We demonstrate a novel type of slow light photonic crystal waveguide which can produce unusual "U" type group index - frequency curves with constant group index n(g) over large bandwidth. By shifting the boundaries of this waveguide, flexible control of n(g) (10 <n(g)< 210) with large bandwidth (1nm<Deltalambda<43nm centered at 1550nm) and normalized Delay-Bandwidth Product (0.1363<DBP<0.3143) are achieved. Additionally, depending on the chosen waveguide geometry, extremely low group velocity dispersion (GVD<0.5 ps x nm(-1) x mm(-1)), with controllable group velocity dispersion of both signs is obtained.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
authors.forename: Ran
authors.initials: R
authors.lastname: Hao
authors.forename: Eric
authors.initials: E
authors.lastname: Cassan
authors.forename: Hamza
authors.initials: H
authors.lastname: Kurt
authors.forename: Xavier
authors.initials: X
authors.lastname: Le Roux
authors.forename: Delphine
authors.initials: D
authors.lastname: Marris-Morini
authors.forename: Laurent
authors.initials: L
authors.lastname: Vivien
authors.forename: Huaming
authors.initials: H
authors.lastname: Wu
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Zhou
authors.forename: Xinliang
authors.initials: X
authors.lastname: Zhang
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation