光学学报, 2010, 30 (s1): s100209, 网络出版: 2010-12-13  

一种新型的大模场高浓度石英基掺铒光纤

A Novel High Concentration Silica Erbium-Doped Fiber with Large Mode Field Diameter
作者单位
北京交通大学光波技术研究所, 北京 100044
摘要
采用环形石墨炉加热的改进化学汽相沉积(MCVD)车床制作出了多包层铋镓铝共掺的石英基高浓度掺铒光纤,并对其几何参数和吸收谱进行测试和分析。结果表明,利用多包层结构有效提高了掺铒光纤的模场直径和吸收系数。制作的多包层掺铒光纤在1530 nm波长下的吸收可达84 dB/m;在1550 nm处的模场直径可达11.6 μm;而基底损耗约为1.5 dB/m。利用所研制的掺铒光纤制作了掺铒光纤放大器并对其长度进行了优化,最终得到了长度为1.95 m的C波段掺铒光纤放大器,其小信号增益达到了23 dB。
Abstract
A sample of multi-cladding high concentration silica host erbium doped fiber with bismuth-gallium-aluminum co-doped is fabricated by MCVD process with a type of annular graphite heater furnace. Its geometric parameters and absorption spectrum are measured and analyzed. It is presented that the mode field diameter and absorption coefficient of the erbium-doped fiber are both increased efficiently by using multi-cladding structure. The absorption reaches to 84 dB/m at 1530 nm and the mode field diameter is 11.6 μm at 1550 nm, but the background loss is 1.5 dB/m. An erbium-doped fiber amplifier is established and the best length of fiber is experimentally found. As a result, a 1.95 m C-band erbium-doped fiber amplifier is presented with small signal gain of 23 dB.

刘利松, 彭健, 张晨芳, 郑晶晶, 刘志明, 郑斯文, 简水生. 一种新型的大模场高浓度石英基掺铒光纤[J]. 光学学报, 2010, 30(s1): s100209. Liu Lisong, Peng Jian, Zhang Chenfang, Zheng Jingjing, Liu Zhiming, Zheng Siwen, Jian Shuisheng. A Novel High Concentration Silica Erbium-Doped Fiber with Large Mode Field Diameter[J]. Acta Optica Sinica, 2010, 30(s1): s100209.

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