Length Optimization of Single-Mode Rare-Earth Doped Waveguides Using Saturated Absorption

Véronique François, S. Iraj Najafi, Tomoko Ohtsuki, Nasser Peyghambarian

Research output: Contribution to journalArticle

1 Scopus citations


Absorption saturation was demonstrated to provide a high, uniform population inversion over a length of waveguide longer than the material absorption length. The small signal gain was measured experimentally in single-mode waveguides, made by silver ion exchange, on a commercially available neodymium doped glass. The ratio of the excited states was calculated as a function of waveguide length and was shown to be a convenient criteria to determine the optimum device length.

Original languageEnglish (US)
Pages (from-to)872-874
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
StatePublished - Jan 1 1995


ASJC Scopus subject areas

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

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