A singlemode optical fiber designed to reduce chromatic dispersion. The fiber core is fabricated in several layers with different refractive indices running in parallel throughout its length.

K., Windeler, R. S. & Stentz, A. J. Efficient visible continuum generation in air-silica microstructure optical fibers with anomalous dispersion at 800 nm. Conference on Lasers and Electro-Optics ...