Optical amplification in thin optical waveguides with high Er concentration
- 1 February 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 5 (2) , 227-229
- https://doi.org/10.1109/68.196013
Abstract
The fabrication of compact active optical waveguides requires high concentrations of rare-earth ions. In highly doped materials the optical gain is affected by cross-relaxation and up-conversion processes. By solving the rate equations for the levels involved in radiative transitions, the optical gain is obtained as a function of the dopant concentration in the case of Er-doped silica pumped at 980 nm. The performance of channel waveguides from the same material is analyzed; in particular, the dependence on Er concentration of threshold pump power and amplifier gain is discussed.Keywords
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