| 於杏燕,周亚训,许银生,王训四,张培晴,陶光明,戴世勋.Er3+掺杂硫系光子晶体光纤的中红外增益特性研究[J].光电子激光,2012,(5):915~921 |
| Er3+掺杂硫系光子晶体光纤的中红外增益特性研究 |
| Studies on mid-IR gain characteristics of Er3+-doped chalcogenide glass photonic crystal fibers |
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| DOI： |
| 中文关键词: Er3+掺杂硫系玻璃 光子晶体光纤(PCF) 中红外增益 速率-传输方程 |
| 英文关键词:Er3+-doped chalcogenide glass photonic crystal fiber(PCF) mid-infrared gain rate-propagation equation |
| 基金项目:国家自然科学基金(60878042,61177087);教育部新世纪优秀人才计划(NCET-10-0976);浙江省杰出青年基金(R1101263);宁波市新型光电功能材料及器件创新团队基金(2009B21007);宁波大学王宽诚幸福基金资助项目 |
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| 中文摘要: |
| 实验制备了质量比为1%的Er3+掺杂75GeS2-15Ga2S3-10CsI(GGSI)硫系玻璃,测试并计算了相关光谱参数,使用多级法计算了设计的光子晶体光纤(PCF)在2.8μm的中红外信号的模场分布。在此基础上,建立了Er3+的四能级粒子数速率-光功率传输方程模型,模型综合考虑了Er3+的交叉弛豫和能量上转换,模拟得到了Er3+掺杂GGSI硫系玻璃PCF在2.8μm的中红外增益与掺杂光纤长度、泵浦功率和信号功率的变化关系。研究结果显示,Er3+掺杂GGSI硫系PCF放大器在2 750～2 950nm波段平均信号增益值超过了40dB,明显优于传统结构光纤的平均信号增益值20dB。 |
| 英文摘要: |
| 1wt% Er3+-doped 75GeS2-15Ga2S3-10CsI(GGSI) chalcogenide glasses are fabricated and the properties of these glasses are investigated.The mode field distribution in mid-infrared(IR) region of the designed photonic crystal fiber(PCF) is worked out by the multipole method.Based on the rate equations and light propagation equations,the numerical simulations on mid-infrared gain versus the fiber length,pump power and signal power for the Er3+-doped GGSI chalcogenide glass PCF are presented in this paper,which are compared with those of conventional fiber amplifiers.Effects of energy transfer between Er3+ levels due to cross-relaxation and cooperative up-conversion are considered here.It is shown that the average signal gain of the Er3+-doped GGSI chalcogenide glass PCF exceeds 40 dB in the region of 2 750-2 950 nm,which presents a bigger signal mid-infrared gain than conventional fibers with 20 dB. |
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