Radiation loss of dispersion-managed solitons in optical fibers

Tian Shiang Yang, William L. Kath

研究成果: Article同行評審

22 引文 斯高帕斯(Scopus)

摘要

A nonlinear optical fiber with a periodic group-velocity dispersion variation, called a dispersion-map, allows transmission of breathing soliton-like pulses. These pulses, commonly referred to as dispersion-managed solitons (even though they are not true solitons), experience substantial distortion within each map period but recover their shapes after each complete cycle. Since linear dispersive waves composed of particular frequencies can oscillate with the same period as the dispersion-managed soliton, the two can couple together in a nonlinear resonance. As a result, dispersion-managed solitons tend to radiate. Here we calculate the radiation intensity by analyzing the nonlinear Schrodinger equation with a periodic dispersion coefficient. When the dispersion-map period is shorter than the average dispersion length, the radiation intensity is found to be exponentially small and can be determined by the techniques of asymptotics beyond all orders. It is shown that the resonant radiation generally has nonzero intensity and thus drains energy from dispersion-managed solitons, so that they are thus not truly periodic. We also show that there are low-radiation windows for particular parameter values where the dispersive radiation shed is greatly diminished.

原文English
頁(從 - 到)80-94
頁數15
期刊Physica D: Nonlinear Phenomena
149
發行號1-2
DOIs
出版狀態Published - 2001 二月 1

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Condensed Matter Physics
  • Applied Mathematics

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