共查询到18条相似文献,搜索用时 93 毫秒
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介绍了Er^3 :Yb^3 共掺玻璃波导放大器(EDWA)的原理、结构、制备及其优势与局限,同时还介绍了多种基于EDWA的集成放大器以及它们在城域网/接入网,CATV等光通信领域的应用。 相似文献
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介绍了Er^3 :Yb^3 共掺玻璃波导放大器(EDWA)的原理、结构、制备及其优势与局限,同时还介绍了多种基于EDWA的集成放大器件在城域网/接入网、CATV等光通信领域的应用。 相似文献
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测量了Er^3 掺杂氟氧化物微晶玻璃、Er^3 ,Yb^3 掺杂氟氧化物微晶玻璃退火前后3种样品的吸收光谱、激发光谱、上转换发光光谱及其强度随泵浦光强的变化,对比讨论了其上转换发光特性。 相似文献
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LIU Yang WANG Xiao-bing SUN Bin CHENG Yong WANG Li-jun 《半导体光子学与技术》2006,12(4):242-244
An all-fiber based Er^3+ :Yb^3+ co-doped double clad fiber laser operating at 1 550 nm is demonstrated. By using 9 m long Er^3+ : Yb^3+ co-doped fiber(EYDF) as the gain medium, and using a pair of fiber Bragg gratings as wavelength filters, the line-width of the output laser is as narrow as 0.2 nm and the output power is more than 6 mW. The fluorescent effect of the laser before its emission is also studied. And it is found that the Er^3+ : Yb^3+ co-doped double-clad fiber laser also exhibits a high gain for Yb^3+ transition near 1 080 nm. 相似文献
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共掺Er3+:Yb3+磷酸盐玻璃光波导激光器的发展 总被引:1,自引:0,他引:1
介绍了共掺Er^3 :Yb^3 的磷酸盐玻璃光波导激光器的特点、能级结构、激光器的速率方程、传输方程和光波导的制作方法;同时还介绍了共掺Er^3 :Yb^3 的磷酸盐玻璃光波导激光器的国内外研究的进展状况及其发展趋势。 相似文献
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In experimental and theoretical study of anomalous dispersion in Er3+and Er3+-Yb3+-doped fibers has been developed. Anomalous time delay caused by both absorption and emission at 1.535 μm has been theoretically calculated and experimentally measured. A pump power dependence of anomalous time delay in rare-earth-doped fibers has been theoretically calculated and experimentally investigated. It has been shown that pump power fluctuations lead to propagation time jitter in Er3+-doped fiber amplifiers. The pulse interaction due to refractive index change caused by gain saturation is predicted. It has been shown that for Er 3+-doped fibers with SiO2-GeO2 core composition, the anomalous dispersion per 1-dB gain is twice that of fibers with SiO2-Al2O3 core, which is caused by gain curve form difference. A scheme of mutual compensation of intrinsic fiber dispersion and anomalous dispersion caused by Er3+ in the region 1.532-1.537 μm has been suggested 相似文献
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磷酸盐玻璃中稀土离子Ce~(3 )、Tb~(3 )、Er~(3 )和Tm~(3 )的能量转移和敏化过程的研究 总被引:2,自引:1,他引:1
本文报道了磷酸盐玻璃中Tb~(3 )和Ce~(3 )的浓度猝灭效应。在KrF激光(248毫微米,10毫微秒)激发下,测出磷酸盐玻璃中不同浓度Ce~(3 )或Tb~(3 )离子的荧光寿命。着重讨论了磷酸盐玻璃中Ce~(3 )→Tb~(3 )、Er~(3 )和Tm~(3 )的能量转移和敏化过程。 相似文献
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Short high-concentration Yb3+-sensitized Er3+-doped fiber amplifiers are modeled and numerically investigated in the small-signal domain. Concentration quenching is included with a term quadratic in the concentration of excited Er3+ . We find that for fibers shorter than 1 m, the small-signal gain can be larger for sensitized fibers than for non-sensitized ones (31 dB gain vs. 22 dB at 5 cm). Without concentration quenching (e.g. for long fibers), Yb3+-free amplifiers have a higher small-signal gain. The achievable gain of the sensitized amplifier is independent of the pump laser wavelength, if the Yb-concentration is correspondingly optimized. However, restrictions on allowable Yb-concentrations imply that for a specific pump wavelength, a finite range of amplifiers lengths is suitable 相似文献
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Er3+掺杂硫系光子晶体光纤的中红外增益特性研究 总被引:1,自引:1,他引:0
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。 相似文献
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Hu Y. Jiang S. Luo T. Seneschal K. Morrell M. Smektala F. Honkanen S. Lucas J. Peyghambarian N. 《Photonics Technology Letters, IEEE》2001,13(7):657-659
Performance of high-concentration Er3+-Yb3+-codoped phosphate fiber amplifiers in a copumping configuration is presented. Gain, noise figure, and output signal saturation power of fiber amplifiers with different lengths are reported. From a 3.6-cm-long fiber, 18-dB internal gain, i.e., 5 dB/cm, for small signal input at 1535 nm, was achieved. To the best of our knowledge, this is the highest gain per unit length for erbium-doped fiber amplifiers ever reported 相似文献