EDWA用基础玻璃的光谱特性研究

制备了掺Er3+和Er3+/Yb3+共掺的可用于EDWA(掺铒波导放大器)的Na2O-B2O3-SiO2玻璃.吸收光谱特性表明:不同掺杂Er2O3浓度基础玻璃峰位置基本相同,但玻璃在相同波长处的吸收率随着Er2O3浓度的增加而增大;光敏剂Yb2O3的加入明显增大了样品在978 nm处的吸收面积;荧光光谱特性表明:随着Er2O3浓度的增加玻璃在1536 nm处的荧光半高宽(FWHM)由80 nm减小到40 nm,从而确定本体系的Er2O3掺杂浓度为0.2 mol%左右较好.

Investigation on Spectrum Characteristic of Basic Glass Applied to EDWA

Silicate glasses doped Er 3+ and codoped Er 3+/Yb 3+ were fabricated, which were applied to EDWA (Erbium-doped Optical Glass Waveguide Amplifiers) Absorption spectra properties show that peak position of glass doped with different Er 2O 3 concentration are basically same,however,T% of the same wavelength is different :A% is increasing with the increasing of Er 2O 3 concentration ;a larger absorption cross section is observed because of adding Yb 2O 3 as sensitizer Analysis of fluorescence spectra shows that full width at half maximum(FWHM)was reduced from 80 nm to 40 nm with the increasing of doped Er 2O 3 concentration Therefore,the better doped concentration of Er 2O 3 was about 0.2 mol%