Abstract

Compression of linearly chirped picosecond pulses in hollow-core photonic bandgap fibers is investigated numerically. The modal properties of the fibers are modeled using the finite-element technique, whereas nonlinear propagation is described by a generalized nonlinear Schrödinger equation, which accounts both for the composite nature of the nonlinearity and the strong mode profile dispersion. Power limits for compression with more than 90% of the pulse energy in the main peak of the compressed pulse are investigated as a function of fiber design, and the temporal and spectral widths of the input pulse. The validity of approximate scaling rules is investigated, and figures of merit for fiber design are discussed.

© 2008 Optical Society of America

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History
Original Manuscript: March 18, 2008
Manuscript Accepted: June 4, 2008
Revised Manuscript: June 4, 2008
Published: June 16, 2008

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Author Affiliations

P. J. Roberts

DTU Fotonik, Technical University of Denmark

J. Laegsgaard

DTU Technical University of Denmark

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