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2 Opto-Electronics Review

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Analysis of working conditions of multimode fibre amplifiers

100%

Borecki M. , Kruszewski J.

1999

tom Vol. 7, No. 3

197-202

The paper presents theoretical background of radiation amplifier for different active optic fibres:multimode and singlemode ones operating in three- or four- level pumping systems and with various doping. The authors did the comparison of working conditions of singlemode and multimode amplifiers. Because of high-level energy losses in the tested multimode fibre also the temperature and noise problems were discussed.

Radiation amplification identification in optical fibre amplifiers

100%

Kruszerwski J. , Borecki M.

tom Vol. 8, No. 2

147-151

The article presents theoretical background of radiation amplification in optic singlemode and multimode fibres and involves multimode fibre amplifier model worked out by the author. The analysis of amplification is based on the equations describing population of energetic levels and on the equations of radiation propagation. The possibilities of amplification identification of single and multimode amplifiers were checked by the authors. On these bases they evaluate the multimode amplifier pumped contradirectionally model. The method applied for this model could be easily implemented in singlemode amplifier pumped contradirectionally parameters calculation.