Soliton blueshift in tapered photonic crystal fibers |
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Authors: | Stark S P Podlipensky A Russell P St J |
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Affiliation: | Max Planck Institute for the Science of Light, Guenther-Scharowsky Strasse 1/Bau 24, 91058 Erlangen, Germany. |
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Abstract: | We show that solitons undergo a strong blueshift in fibers with a dispersion landscape that varies along the direction of propagation. The experiments are based on a small-core photonic crystal fiber, tapered to have a core diameter that varies continuously along its length, resulting in a zero-dispersion wavelength that moves from 731 nm to 640 nm over the transition. The central wavelength of a soliton translates over 400 nm towards a shorter wavelength. This is accompanied by strong emission of radiation into the UV and IR spectral regions. The experimental results are confirmed by numerical simulation. |
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