Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 6: Quantum Effects: Light Scattering and Propagation

Q 6.4: Vortrag

Montag, 14. März 2011, 11:30–11:45, SCH A01

Suppression of stimulated Brillouin scattering in a photonic crystal fiber with periodically-varied core diameter — •Birgit Stiller¹, Michaël Delqué¹, Min Won Lee¹, Alexandre Kudlinski², Hervé Maillotte¹, and Thibaut Sylvestre¹ — ¹Institut FEMTO-ST, Université de Franche-Comté, 25030 Besançon, France — ²Université Lille 1, IRCICA, Laboratoire PhLAM, 59655 Villeneuve d'Ascq, France

Suppression of stimulated Brillouin scattering (SBS) in optical fibers is of particular interest for telecommunication and fiber laser applications. For this purpose we designed a photonic crystal fiber with periodically varying size of the air-hole-structure by 7% while keeping a low attenuation coefficient. We experimentally demonstrate 7 dB improvement in SBS suppression compared to a homogenous fiber. The fiber under test was characterized by using Brillouin echoes distributed sensing technique where the periodic variation of the Brillouin frequency shift is demonstrated. Additionally guided acoustic wave Brillouin scattering was investigated in this fiber and compared to numerical simulations of a full-vectorial finite element method based on the scanning electron microscope image of the fiber cross section.