Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1485669 | Journal of Non-Crystalline Solids | 2007 | 7 Pages |
Abstract
We report the results of emission and amplification in Tm3+- and Er3+-fibers for signal gain in the 1460-1600Â nm region, which covers a large part of S-, C- and L-bands of silica fiber optical communication networks. The paper explains the mechanism for alleviating the pump-excited absorption in Er3+-doped and Tm3+-doped tellurite fibers for maximizing the pump inversion efficiency at 980Â nm using the co-dopants and via the structural modification of TeO2 glass by incorporating a high phonon energy oxide namely, B2O3. The spectroscopic data and gain bandwidth of Er-doped fibers are reported in the C- and L-bands. To date the measured maximum relative gain in short fibers of 5-10Â cm in length in C- and L-bands are: 30Â dB and 15Â dB, respectively. By comparison the internal gain in a 20Â cm long Tm/Yb ion co-doped fiber pumped with a 980Â nm source was 7Â dB.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Animesh Jha, Purushottam Joshi, Shaoxiong Shen, Lihui Huang,