Study of heavily thulium-doped fiber amplifier for optical telecom at 2?m

2nd International Conference on Sustainable Engineering Techniques

工业技术（总论）

Khamis, M.A.^1 ; Ennser, K.^2

Baqubah Technical Institute, Middle Technical University, Diyala, Iraq^1

College of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea

SA1 8EN, United Kingdom^2

关键词: Amplified spontaneous emission noise;    Cross-relaxation process;    Ion-ion interaction;    Numerical results;    Propagation equations;    Pump wavelength;    Theoretical modeling;    Thulium doped fiber amplifiers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/518/5/052017/pdf
DOI  :  10.1088/1757-899X/518/5/052017

学科分类：工业工程学

来源: IOP

【 摘 要 】

In this study, the performance of a thulium-doped fiber amplifier is investigated for optical telecom at 2 μm with the pump wavelength of 1570nm. The influence of energy up-conversion transitions has been built up on the theoretical model. A heavily thulium doped concentration has been chosen in order to consider this ion-ion interaction. The rate and propagation equations have been developed to study and evaluate the characteristics of a thulium doped fiber amplifier with considering the effects of amplified spontaneous emission noise, cross relaxation process and energy up-conversion. A MATLAB program has been developed to optimise the fiber length and compute the amplifier gain and noise figure. Through the numerical results it is indicated that a short thulium fiber length is require which is a one attractive advantage to choose a thulium fiber with high concentration. However, the results also showed that increasing of thulium doping concentration reduces the signal gain when pumped at 1570nm.