将集成光学放大器用于光纤通信系统中是人们越来越感兴趣的课题,由此导致人们寻找与此相适应的稀土掺杂玻璃材料。给出了一系列Er3+/Yb3+共掺杂硅酸盐玻璃波导的制备和光谱特性的基本结果。平面和条型波导均由Ag+ Na+离子交换技术制备。光谱测量显示,所有样品在1532 nm都观测到了荧光发射峰,其半高谱宽为19 nm。用波长为514.5 nm 和 980 nm的激光抽运,测得多数样品中Er3+离子在亚稳态4I13/2能级上的荧光寿命均为7 ms左右。Er3+/Yb3+共掺杂玻璃的上转换均低于单掺Er3+玻璃。用250 mW,波长为980 nm的激光抽运3.5 cm长的条形波导,在1536 nm 波段下得到的最大净增益是5 dB,增益谱的半峰全宽是14 nm。

The growing interest for the use of integrated optical(IO) amplifiers in optical fiber telecom has led to deep search for ever better rare-earth-doped glassy materials. Some properties of a set of Er~(3+)/Yb~(3+)-doped silicate glasses are reported. Planar and channel waveguides are fabricated by Ag~+-Na~+ ion exchange. Spectral measurement shows that the fluorescence emission peak for all the samples is observed at 1532 nm, with a full-width at half-maximum equal to(19 nm.) Measurements of the lifetime of the metastable state(()~4I_(13/2)) of Er~(3+) are performed upon excitation by laser pumps at 514.5 nm and 980 nm, and life time of the order of 7 ms are measured in most samples. The intensity of the up-conversion fluorescence is less in Er~(3+)/Yb~(3+) co-doped glasses than in Er~(3+)-doped ones. 5 dB net gain at the wavelength of 1536 nm has been obtained in a 3.5 cm long channel waveguide with(250 mW) pump power at 980 nm and the FWHM is 14 nm.