| 宽带碲基掺铒光纤放大器增益谱特性研究 |
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| 引用本文： | 周亚训,陈芬,徐铁峰,聂秋华.宽带碲基掺铒光纤放大器增益谱特性研究[J].光电工程,2005,32(1):47-50. |
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| 作者姓名： | 周亚训 陈芬 徐铁峰 聂秋华 |
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| 作者单位： | 宁波大学,信息科学与工程学院,浙江,宁波,315211 |
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| 基金项目： | 国家自然科学基金;浙江省自然科学基金;浙江省教育厅资助项目 |
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| 摘 要： | 建立了一个多信号共存情形下宽带碲基掺铒光纤放大器(EDTFA)四能级模型,系统研究了EDTFA 增益谱随着光纤激活长度、输入信号功率、泵浦功率和纤芯掺杂浓度的演变关系。研究表明,在输入信号功率减小、泵浦功率提高时,C 波段信号增益迅速增大;在光纤长度增长、掺杂浓度提高时,增益谱向 L 波段偏移;在小信号状态下,其 20dB 增益带宽大于 80nm。研究揭示了EDTFA 适合于作为 WDM 系统中的 L 波段和 C L 波段光纤放大器。
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| 关 键 词： | 光纤放大器 增益谱 波分复用 光纤通信系统 |
| 文章编号： | 1003-501X(2005)01-0047-04 |
| 收稿时间： | 2004/6/3 |
| 修稿时间： | 2004年6月3日 |
Study on gain spectrum of broad-band erbium-doped tellurite-based fiber amplifier |
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| ZHOU Ya-xun,CHEN Fen,XU Tie-feng,NIE Qiu-hua.Study on gain spectrum of broad-band erbium-doped tellurite-based fiber amplifier[J].Opto-Electronic Engineering,2005,32(1):47-50. |
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| Authors: | ZHOU Ya-xun CHEN Fen XU Tie-feng NIE Qiu-hua |
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| Abstract: | Based on a four-level model established for broad-band Erbium-Doped Tellurite-based Fiber Amplifier (EDTFA) with multi-signal coexistence, a theoretical study on gain spectrum for broad-band erbium-doped tellurite-based fiber amplifier (EDTFA) is given in the paper. The evolution relations of EDTFA gain spectrum changing with the activated length of fiber, signal input power, pumping power and erbium-doped concentration of fiber core are also presented in detail. The study shows that C-band gain of EDTFA improves rapidly with the decrease of signal power and the increase of pump power, and the gain spectrum of EDTFA shifts to L band with the increase of fiber length and erbium-doped concentration. Under the condition of small signal input, the bandwidth is more than 80nm for 20dB gain. Theoretical study shows that EDTFA is suitable for L band and C L band fiber amplifiers in WDM system. |
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| Keywords: | Optical fiber amplifiers Gain spectrum WDM Optical fiber communication system |
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