铋镓共掺的高浓度掺铒石英基光纤中铒离子团簇率的实验研究

使用MCVD法结合溶液掺杂技术制作了铒铋镓共掺的石英基光纤.根据光纤吸收谱，得出其中铒离子浓度是5.24×10²⁵/m³.然后提出了一种新的利用透射率测定掺铒光纤的团簇率的实验方法，该方法相比于以前的方法更简单有效.利用该方法，测得了自制铒铋镓共掺光纤中团簇率.通过与前人的结果相比较，充分说明铋和镓的掺入大大提高了铒离子在石英基光纤中的溶解度，抑制了铒离子形成团簇.关键词：掺铒光纤石英基光纤团簇高浓度

Experimental research on the degree of clustering in Bi3+-Ga3+ co-doped high concentration Er3+-doped silica-based fiber

In order to obtain high-concentration doped erbium ions in silica-based fiber, we manufactured Er³⁺-Bi³⁺-Ga³⁺ co-doped fiber using MCVD and solution doping technique. The concentration of Er³⁺ in the fiber was about 5.24×10²⁵/m³. We described a new method to measure the degree of clustering in the Er³⁺-Bi³⁺-Ga³⁺ co-doped fiber using fiber transmission experiment. Compared with other methods, the new method is simpler and more accurate. By the new method, the degree of clustering in Er³⁺-Bi³⁺-Ga³⁺ co-doped fiber was determined. It was shown that co-doped Bi³⁺-Ga³⁺ strongly increased the Er³⁺ solubility in the silica-based fiber.