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Anomalous dispersion in photonic crystal fiber

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6 Author(s)
Knight, J.C. ; Optoelectronics Group, Bath Univ., UK ; Arriaga, J. ; Birks, T.A. ; Ortigosa-Blanch, A.
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We describe the measured group-velocity dispersion characteristics of several air-silica photonic crystal fibers with anomalous group-velocity dispersion at visible and near-infrared wavelengths. The values measured over a broad spectral range are compared to those predicted for an isolated strand of silica surrounded by air. We demonstrate a strictly single-mode fiber which has zero dispersion at a wavelength of 700 mm. These fibers are significant for the generation of solitons and supercontinua using ultrashort pulse sources.

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Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 7 )