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Stress-induced single-polarization single-transverse mode photonic crystal fiber with low nonlinearity

: Schreiber, T.; Röser, F.; Schmidt, O.; Limpert, J.; Iliew, R.; Lederer, F.; Petersson, A.; Jacobsen, C.; Hansen, K.; Broeng, J.; Tünnermann, A.

Postprint (999 KByte; PDF; )

Optics Express 13 (2005), No.19, pp.7621-7630
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IOF ()

We report on the design of a single-polarization single-transverse mode large mode area photonic crystal fiber. By including index-matched stress applying elements in the photonic cladding an ultra-broadband single polarization window is obtained while a large mode field area of ~700 µm² is maintained. Based on that design, an Yb-doped double-clad photonic crystal fiber is realized that combines low nonlinearity and single polarization properties. A first result of the high power operation using this fiber is demonstrated.