OSE Seminars
Spatiotemporal Dynamics of Optical Pulse Propagation in Multimode Fibers
Presented by Professor Frank Wise, Department of Applied Physics, Cornell University
As optical fiber communications and fiber lasers approach fundamental limits, interest in multimode fibers has grown. Optical fibers designed to support multiple transverse modes offer opportunities to study wave propagation in a setting that is intermediate between single-mode fiber and free-space propagation. However, few experimental studies of nonlinear pulse propagation in multimode fiber have been reported.
A variety of qualitatively-new phenomena have been observed recently in multimode fibers. Self-cleaning of a multimode beam, self-focusing, and multiple filamentation are observed at a fraction of the critical power for self-focusing. By varying the launched spatial modes, it is possible to generate megawatt ultrashort pulses tunable between 1550 and 2200 nm, dispersive waves over one octave in frequency, intense combs of visible light, or continua that span multiple octaves. New instabilities, which are spatiotemporal in nature, occur. A few of these new phenomena will be presented along with their connection to multimode soliton dynamics.
11:00 am, Thursday, November 17, 2016
PAIS-2540, PAIS
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