共 1 条
Fabrication and gain performance of Er3+/Yb3+-codoped tellurite glass fiber
被引:0
作者:
戴世勋
[1
]
徐铁峰
[1
]
聂秋华
[1
]
沈祥
[1
]
王训四
[1
]
机构:
[1] College of Information Science and Engineering, Ningbo University
关键词:
tellurite glass;
glass fiber;
erbium;
gain;
rare earths;
D O I:
暂无
中图分类号:
TQ171.77 [玻璃纤维];
学科分类号:
0805 ;
080502 ;
摘要:
Er3+/Yb3+-codoped TeO2 -ZnO-BaO-La2O3 tellurite glass fiber was fabricated by rotation and rod-in-tube technologies. The ther-mal stability and optical refractive index of the core and cladding glasses were determined by DTA and optical coupler, respectively. The av-erage background loss of tellurite glass fiber was 1.8 dB/m at 1310 nm. Optical microscopy and field emission scanning electron microscope (FESEM) were used to study structural characteristics of preforms and optical fibers. The main loss of tellurite glass fiber could be attributed to scatter centre due to core-cladding interface defects. The amplifier performance of tellurite glass fiber was investigated by pumping with 980 nm laser diode (LD). The gain coefficient and maximum signal gain were 0.21 dB/mW and 10 dB, respectively, for a pumping power of 120 mW. Gains exceeding 5 dB were obtained over 30 nm bandwidth from 1535 to 1565 nm. The minimum noise figure was 4.8 dB at 1557 nm.
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页码:915 / 918
页数:4
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