Efficiency of pump absorption in double-clad fiber amplifiers. III. Calculation of modes

Dmitrii Kouznetsov, Jerome V. Moloney

Research output: Contribution to journalArticle

23 Scopus citations


Using an analogy with quantum mechanics we employ a technique that enables us to calculate the efficiency of an incoherent pump in general-geometry double-clad fibers. This approach yields accurate estimates of the absorption rate of each mode of the pump in the first order of perturbation theory. Such estimates are compared with results of numerical simulations reported recently. The comparison confirms the high efficiency of a spiral-shaped cladding.

Original languageEnglish (US)
Pages (from-to)1304-1309
Number of pages6
JournalJournal of the Optical Society of America B: Optical Physics
Issue number6
StatePublished - Jun 2002


ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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