共查询到18条相似文献,搜索用时 156 毫秒
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本文在忽略放大自发辐射(ASE)和上转过程影响的情况下,用重迭因子的方法,得到了980nm波段泵浦的掺饵光波导放大器增益的隐式解析解、泵浦光沿波导方向分布的函数关系式和泵浦阈值功率的解析表达式。详细讨论了重迭因子对增益、泵浦阈值功率和波导中任意位置泵浦光分布的影响。 相似文献
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通过求解双向泵浦传输-速率方程的方法对掩埋型掺饵玻璃波导光放大器(EDWA)的特性进行了理论分析,包括特定折射率光波导中的信号光和泵浦光模场分布,以及EDWA的增益特性。 相似文献
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掩埋型掺铒玻璃波导光放大器的特性分析 总被引:1,自引:0,他引:1
通过求解双向泵浦传输-速率方程的方法对掩埋型掺铒玻璃波导光放大器(EDWA)的特性进行了理论分析,包括特定折射率光波导中的信号光和泵浦光模场分布,以及EDWA的增益特性。 相似文献
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利用重叠因子简化掺铒玻璃波导放大器(EDWA)四能级模型的速率一传输方程,以数值模拟的方法,得到了EDWA的增益与Er3+离子浓度、泵浦功率、波导长度等参数的关系.结果表明选择合适的铒离子浓度是制作EDWA的关键;为了全面发挥EDWA的性能,需要优化泵浦功率、波导长度等参数. 相似文献
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掺Er3+ Al2O3光波导放大器增益特性的模拟计算 总被引:7,自引:0,他引:7
本文通过求解速率方程和传输方程,对掺Er3 光波导放大器(EDWA)的增益特性进行了研究,在不同的泵浦波长下(980nm,1480nm),计算并分析了EDWA的增益与波导长度,掺Er3 浓度及泵浦光强的关系,给出了EDWA的最佳掺Er3 浓度,最佳波导长度以及相应的最大增益值,为光波导放大器的,设计提供了依据。 相似文献
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Theoretical and experimental research on Er-doped and Yb-Er co-doped Al2O3 waveguide amplifiers 总被引:1,自引:0,他引:1
The rate equations of Er-doped and Yb-Er codoped systems pumped at 0.98 μm are presented, with consideration for the upconversion mechanisms such as cooperative upconversion, cross relaxation, and excited state absorption. A multi-theoretical model is founded to analyze the gain characteristics of Er-doped and Yb-Er co-doped Al2O3 waveguide amplifiers by using rate equations, a two-dimension waveguide finite element model and propagation equations with forward and backward amplified spontaneous emission. The dependence of the gain on amplifier length, pump power and doping concentration is obtained. The optimum design curve is given for designing waveguide amplifiers. The new theory is used to analyze the gain performance of a practical Yb-Er co-doped Al2O3 waveguide amplifier, and the analyzed results are in accordance with the experimental data. 相似文献
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Haiyan Chen 《Journal of Infrared, Millimeter and Terahertz Waves》2010,31(1):24-30
A novel broadband IR integrated Er-Yb codoped phosphate glass waveguide amplifier with a long-period waveguide grating is
proposed. The long-period waveguide grating, which is used as a gain equalizer, is directly fabricated in the waveguide. The
amplifier model is based on propagation and population-rate equations and includes both uniform and pair-induced up-conversion
mechanisms. It is solved numerically by combining overlapping integral and Runge-Kutta(RK) algorithm. The intrinsical gain
spectrum of the proposed amplifier is obtained by solving a set of rate and power propagation equations and, the deleterious
gain peaking is reduced by the long-period waveguide grating filter. The effects of transmission spectrum of the proposed
long-period grating on flattening gain are discussed. An average gain ~ 20dB between 1532 nm and 1565 nm with gain difference
of < 3dB is achieved. 相似文献
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合成了铒镱共掺的三元配合物[Er1/2Yb1/2(HFA)3(TPPO)2],并将其掺杂在聚甲基丙烯酸甲酯(PMMA)中,制备了铒镱共掺的聚合物光波导有源材料,对材料的吸收、发射特性进行了表征。在980 nm抽运光激发下,该配合物在1535 nm波长处的荧光半峰全宽为80 nm。针对该材料,建立了980 nm抽运光激发下的原子速率方程和光功率传输方程,理论计算了铒离子掺杂浓度、重叠积分因子、信号光发射截面等参数对铒镱共掺聚合物光波导放大器性能的影响。计算表明,当材料中铒离子的掺杂浓度为0.3×1020 cm-3时,在2 cm长的波导中可获得1.87 dB的光增益。 相似文献
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提出一种基于长周期波导光栅的宽带集成Er-Yb掺杂磷酸盐玻璃集成波导放大器,其中增益平坦光栅滤波器直接刻蚀在有源波导上.放大器模型建立在考虑了上转换之后的传输与速率方程基础上,利用重叠积分与龙格-库塔相结合的方法进行求解.放大器的本征增益谱通过求解重叠积分龙格-库塔方程得到,放大器的有害增益峰由长周期波导光栅滤波器来消除.讨论了长周期波导光栅透射谱对放大器增益平坦的影响.数值计算结果表明,在1 532~1 565 nm范围内,放大器的平均增益约为20 dB,增益抖动小于3 dB.研究结果表明,该结构可有效地消除本征增益谱中的峰值增益,提高放大器的增益平坦带宽. 相似文献
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Folded-spiral EDWAs with continuously varying curvature 总被引:1,自引:0,他引:1
D. Portch R.R.A. Syms W. Huang 《Photonics Technology Letters, IEEE》2004,16(7):1634-1636
The layout of folded spiral erbium-doped planar waveguide optical amplifiers (EDWAs) is considered. A quasi-continuous function to describe the curvature of a folded-spiral layout is presented, based upon the use of cosine and raised-cosine variations in bend curvature. This layout provides greater gain in a given area than the corresponding fixed-radii layout. Analysis is initially based on simple geometric principles and the reduction of bending losses for 180/spl deg/ waveguide bends. Fold-back bends and complete EDWA layouts are then considered. Simulations are carried out using an algorithm that combines five-level rate equations with propagation by the method of lines. 相似文献
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CHENHai-yan DAIJi-zhi LIUYong-zhi 《半导体光子学与技术》2004,10(2):104-107
A new S-type of erbium-ytterbium co-doped phosphate glass waveguide amplifier integrated with cascaded multilayer medium thin film filter is proposed, this S-type geometry waveguide structure is used to achieve a long path in a compact chip,and obtained higher gain with lower Er-doped concentration. The cascaded multilayer medium thin film filter is utilized to achieve a broader flattening gain bandwidth. The intrinsical gain spectrum is obtained by solving rate and power propagation equations, the effect of transmittance spectrum of thin film filter on flattening gain is discussed. 相似文献
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在四能级钕玻璃波导放大器物理模型的基础上,用重叠积分法研究了以802nm泵浦光放大1060nm信号的掺钕磷酸盐波导放大器的速率-传输方程。通过数值模拟,获得了增益特性和波导掺杂浓度、泵浦功率和波导长度的曲线关系。 相似文献