A condition in Ln-doped materials for flat optical gain

被引：2

作者：

Auzel, F. ^{[1
]}

机构：

[1] Mid Sweden Univ, ITM, Dept Phys Elect & Photon, Sundsvall, Sweden

来源：

SPECTROSCOPY LETTERS | 2007年 / 40卷 / 02期

关键词：

EDFA; gain flatness condition; homogeneous width; inhomogeneous width;

D O I：

10.1080/00387010701246854

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

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.

引用

页码：197 / 207

页数：11

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