Novel slow light waveguide with controllable delay-bandwidth product and utra-low dispersion

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 larg...

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Published inOptics express Vol. 18; no. 6; pp. 5942 - 5950
Main Authors Hao, Ran, Cassan, Eric, Kurt, Hamza, Le Roux, Xavier, Marris-Morini, Delphine, Vivien, Laurent, Wu, Huaming, Zhou, Zhiping, Zhang, Xinliang
Format Journal Article
LanguageEnglish
Published United States 15.03.2010
Subjects
Equipment Design
Equipment Failure Analysis
Light
Refractometry - instrumentation
Scattering, Radiation
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Summary: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.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.18.005942