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A condition in Ln-doped materials for flat optical gain
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
2007 (English)In: Spectroscopy Letters, ISSN 0038-7010, E-ISSN 1532-2289, Vol. 40, no 2, p. 197-207Article in journal (Refereed) Published
Abstract [en]

Fundamental conditions that rule gain flatness in Er-doped glass optical amplifiers are investigated using few parameters obtained by drastic simplifications for level positions and widths. The obtained general gain flatness condition for rare-earth-doped glasses contains two parts: a general one valid in any material and a slight modulation of it valid only for glasses when "0-0" transitions are involved. Essentially, the electron-phonon coupling for the considered materials has to be larger than 2/3. In order to exemplify these conditions, they are calculated for fluoride and silicate glasses, which are known to display respectively flat and non-flat gain behavior.

Place, publisher, year, edition, pages
2007. Vol. 40, no 2, p. 197-207
Keywords [en]
EDFA, Gain flatness condition, Homogeneous width, Inhomogeneous width
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:miun:diva-8467DOI: 10.1080/00387010701246854ISI: 000245787900002Scopus ID: 2-s2.0-33947633464OAI: oai:DiVA.org:miun-8467DiVA, id: diva2:139827
Available from: 2009-01-26 Created: 2009-01-26 Last updated: 2017-12-14Bibliographically approved

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Auzel, Francois

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