The F-AIR-6/800 (NKT P/N AIR-6-800) Air Guided Photonic Crystal Fiber guides light in a hollow, 6 ± 1 μm air core using the Photonic Bandgap (PBG) effect. The highly periodic structure of air holes in the cladding of the fiber creates a photonic bandgap. This means that light of frequencies within the PBG is not allowed to propagate out through the cladding and may be trapped in the core of the fiber. In contrast to index-guiding fibers, there is no requirement on the refractive index of the core region to be larger than the index of the cladding. An inherent feature of PBG-Guiding is that the fiber only guides light in a limited spectral region. This fiber operates with less than 0.4 dB/m attenuation at 760 to 800 nm. Outside this region, the fiber core is anti-guiding. Extreme dispersion properties may be found in the PBG fibers, such as anomalous dispersion values in the thousands of ps/nm/km. Due to a negligible contribution from the core material (air), the total dispersion of PBG fibers is dominated by wave-guide dispersion. The NA is 0.17 @ 780 nm and 0.22 @ 830 nm. For adding fiber connectors and protective jackets, please contact Newport technical support.

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