title: Dispersion control in square lattice photonic crystal fiber using hollow ring defects.
abstract: We propose a new dispersion control scheme by introducing hollow ring defects having a central air hole and a GeO2-or F-doped silica ring with in a square lattice photonic crystal fiber. We confirmed the flexible dispersion controllability in the proposed structure in two aspects of dispersion managements: ultra-flattened near-zero dispersion in the 530 nm-bandwidth over all communication bands and dispersion compensation in C, L, and U band with a high compensation ratio of 0.96~1.0 in reference to the standard single mode fiber. The proposed SLPCFs were also estimated to have an inherently low splice loss due to the index contrast between the doped-ring and silica that kept a good guidance even along with collapsed air holes, which cannot be achieved in conventional PCFs.
authors.affiliation: Department of Physics, Yonsei University, 50 Yonsei-ro, Seodaemungu, Seoul 120-749, Korea.
authors.forename: Jiyoung
authors.initials: J
authors.lastname: Park
authors.forename: Sejin
authors.initials: S
authors.lastname: Lee
authors.forename: Sungrae
authors.initials: S
authors.lastname: Lee
authors.forename: So Eun
authors.initials: SE
authors.lastname: Kim
authors.forename: Kyunghwan
authors.initials: K
authors.lastname: Oh
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008027:Light; D017785:Photons; D012542:Scattering, Radiation; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D012822:Silicon Dioxide