Comparison of fiber-based Sagnac interferometers for self-switching of optical pulses

Wen Hua Cao, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


Self-switching of ultrashort optical pulses in a gain-distributed nonlinear amplifying fiber loop mirror (NALM) is investigated numerically in the soliton regime. Switching characteristics of this device is compared to those of the nonlinear optical loop mirror (NOLM) and the conventional NALM that uses a lumped gain. We show that, as compared with the NOLM or the conventional NALM, the gain-distributed NALM can produce higher-quality pulses and permits more efficient pulse compression. We also show that the gain-distributed NALM has several advantages over the conventional NALM such as sharpened switching edges, flattened switching peak, and robustness to gain variations.
Original languageEnglish
Pages (from-to)177-186
Number of pages10
JournalOptics Communications
Issue number1-6
Publication statusPublished - 17 Jan 2005


  • Nonlinear optics
  • Optical fibers
  • Optical switches
  • Pulse compression

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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