| 低噪声、高增益的L -band EDFA的实验研究 |
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| 引用本文： | 秦山,强则煊,何赛灵. 低噪声、高增益的L -band EDFA的实验研究[J]. 光子学报, 2005, 34(3): 409-411 |
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| 作者姓名： | 秦山 强则煊 何赛灵 |
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| 作者单位： | 浙江大学现代光学仪器国家重点实验室,光及电磁波研究中心,杭州,310027;浙江大学现代光学仪器国家重点实验室,光及电磁波研究中心,杭州,310027;浙江大学现代光学仪器国家重点实验室,光及电磁波研究中心,杭州,310027 |
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| 摘 要： | 针对传统的L-band EDFA的工作效率低，提出了一种基于单根光纤光栅、泵浦分配、两段级联的EDFA的新结构，其中的光纤光栅用来反射无用的后向C-band ASE.系统地研究了泵浦比例和光纤光栅波长对增益噪声指数的影响关系.最后经实验验证，得到了低噪声、高增益的L-band的EDFA.其在输入信号光（1570 nm）功率为-30 dBm及泵浦功率为70 mW时，增益为22.26 dB，增益噪声指数为4.96 dB.
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| 关 键 词： | L-band 掺铒光纤放大器 噪声 增益 |
| 收稿时间： | 2004-02-03 |
| 修稿时间： | 2004-02-03 |
Experimental Study of an L-band Erbium Doped Fiber Amplifier With Low-noise and High Gain |
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| QIN Shan,Qiang Zexuan,He Sailing. Experimental Study of an L-band Erbium Doped Fiber Amplifier With Low-noise and High Gain[J]. Acta Photonica Sinica, 2005, 34(3): 409-411 |
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| Authors: | QIN Shan Qiang Zexuan He Sailing |
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| Affiliation: | Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, Joint Laboratory of Optical Communications of Zhejiang University, Zhejiang University, Hangzhou 310027 |
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| Abstract: | A new two-stage L-band erbium doped fiber amplifier (EDFA) structure with a single fiber grating is introduced to solve the problem of poor power conversion efficiency of a conventional L-band EDFA. A mid-way isolator is used in the structure to improve the noise figure. The fiber grating is used to reflect the wasted C-band backward amplified spontaneous emission (ASE). The influence of the pump power ratio and the Bragg wavelength to the characteristics of this EDFA is studied experimentally. For such an EDFA structure with a pump power of 70 mW, 22.26 dB gain and 4.96 dB noise figure is obtained for a 1570 nm signal with an input power of-30 dBm. |
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| Keywords: | L-band Erbium doped fiber amplifier (EDFA) Noise figure Gain |
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