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为了获得不同温度下掺铒光纤的吸收截面谱和发射截面谱,理论分析了掺铒光纤损耗系数、吸收截面和发射截面与温度的关系。实验研究了损耗谱,吸收截面和发射截面谱随温度的变化。利用截断法测量掺铒光纤的损耗谱,通过损耗谱得到吸收截面谱,然后利用McCumber关系算出发射截面谱,研究表明波长小于1536 nm时,损耗系数随着温度降低而增大,波长大于1536 nm时损耗系数随着温度的升高而增大。
In order to obtain the absorption cross-section spectrum and emission cross-section spectrum of erbium-doped fiber under different temperatures, the relationship between the loss coefficient, absorption cross section and emission cross section of erbium-doped fiber was theoretically analyzed. Experimental study of the loss spectrum, absorption cross section and emission cross section spectrum with temperature changes. The loss spectra of erbium-doped fibers were measured by truncation method, and the absorption cross-section spectra were obtained by the loss spectra. Then the emission cross-section spectra were calculated by McCumber relationship. The results show that the loss coefficients increase with the decrease of temperature at wavelengths less than 1536 nm, The loss factor increases with increasing temperature.