Self-similar propagation and amplification of parabolic pulses in optical fibers

Ultrashort pulse propagation in high gain optical fiber amplifiers with normal dispersion is studied by self-similarity analysis of the nonlinear Schrödinger equation with gain. An exact asymptotic solution is found, corresponding to a linearly chirped parabolic pulse which propagates self-similarly...

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Veröffentlicht in:Physical review letters 2000-06, Vol.84 (26 Pt 1), p.6010-6013
Hauptverfasser: Fermann, M E, Kruglov, V I, Thomsen, B C, Dudley, J M, Harvey, J D
Format: Artikel
Sprache:eng
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Zusammenfassung:Ultrashort pulse propagation in high gain optical fiber amplifiers with normal dispersion is studied by self-similarity analysis of the nonlinear Schrödinger equation with gain. An exact asymptotic solution is found, corresponding to a linearly chirped parabolic pulse which propagates self-similarly subject to simple scaling rules. The solution has been confirmed by numerical simulations and experiments studying propagation in a Yb-doped fiber amplifier. Additional experiments show that the pulses remain parabolic after propagation through standard single mode fiber with normal dispersion.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.84.6010