The preparations and optical spectra of Eu

2+

ions doped-glass have been attracted much attentions due to their applications in optical devices such as Faraday rotators

lasers

high dense light storage and so on. In order to obtain more Eu

2+

ions

many complex preparations have been done

for example under strong reductive atmosphere and so on. It is necessary to explore easy and simple method that can obtain glasses with high concentration of Eu

2+

. In the present paper

under air atmosphere Eu

2

O

3

incorporated P

2

O

5

-BaO-Na

2

O-K

2

O glasses and Na

2

O-TeO

2

-ZnO glasses were prepared by melting at 1200℃. The emission spectra of Eu ions in the glasses were measured at room temperature. The structural and compositional effects on the valence-state of Eu ions were discussed. The results indicated that the Eu ions in the phosphate glass exist in the state of trivalent. However

some of the Eu ions in the Na

2

O-TeO

2

-ZnO glasses were divalent

although the glasses were prepared under air atmosphere. The Eu

3+

ions could be effectively reduced to Eu

2+

ions by the reductive action of silicon powder. Since the network of the tellurate glasses easily distorted and zinc oxide presented

Eu ions replaced the sites of the Zn

2+

ions and the Eu

2+

ions exist steadily in the glasses. The tellurate glasses containing overall Eu

2+

ions with good optical property can be prepared by the proper melting processing and addition of silicon quantity.