Amplifying properties of heavily erbium-doped active fibres
- Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)
- Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)
The relative concentration of erbium ions undergoing nonradiative relaxation from the metastable to the ground level is measured in aluminosilicate glass fibres doped with erbium ions at concentration between 3x10{sup 18} and 10{sup 20} cm{sup -3}. The dependence of the fraction of such ions on the Er{sup 3+} concentration is determined for fibres containing different amounts of aluminium oxide in a core. It is shown that the fraction of erbium ions not involved in amplification substantially decreases with increasing the Al{sub 2}O{sub 3} concentration. It is found that clustering leads to a considerable decrease in the gain in heavily Er{sup 3+}-doped active fibres. The dependence of the quantum efficiency of a fibre amplifier on the erbium ion concentration is obtained based on the measurements performed. This dependence can be used for optimising the parameters of erbium-doped fibre amplifiers. (fibres. integrated-optic waveguides)
- OSTI ID:
- 21470776
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 35, Issue 6; Other Information: DOI: 10.1070/QE2005v035n06ABEH006595; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
ALUMINIUM OXIDES
AMPLIFIERS
DOPED MATERIALS
ERBIUM IONS
GAIN
GLASS
GROUND LEVEL
OPTICAL FIBERS
QUANTUM EFFICIENCY
RELAXATION
WAVEGUIDES
ALUMINIUM COMPOUNDS
AMPLIFICATION
CHALCOGENIDES
CHARGED PARTICLES
EFFICIENCY
ELECTRONIC EQUIPMENT
EQUIPMENT
FIBERS
IONS
LEVELS
MATERIALS
OXIDES
OXYGEN COMPOUNDS