Enhancement of stimulated Brillouin scattering of higher-order acoustic modes in single-mode optical fiber
Enhancement of stimulated Brillouin scattering of higher-order acoustic modes in single-mode optical fiber
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DOI：
10.1364/ol.30.002685
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发表时间：
2005-10-15
期刊：
影响因子：
3.6
通讯作者：
Chen, L
中科院分区：
文献类型：
--
作者：
Afshar, S;Kalosha, VP;Chen, L
精确求解掺GeO_2石英光纤的弹性波方程，得到了光纤中纵、横波速度和密度呈阶梯状分布的漏声模的色散、衰减和场。我们已经开发了一个模型，这些模式的受激布里渊散射的泵浦-探测配置，并提供其布里渊增益和频率的扩展范围内的核心尺寸和GeO 2掺杂。参数范围接近截止的声学模式和泵耗尽增强的比高阶峰的主要峰值的布里渊频谱，并适合于同时应变-温度传感。(c)2005年，美国光学学会。
Solving the elastic wave equation exactly for a GeO2-doped silica fiber with a steplike distribution of the longitudinal and shear velocities and density, we have obtained the dispersion, attenuation, and fields of the leaky acoustic modes supported by the fiber. We have developed a model for stimulated Brillouin scattering of these modes in a pump-probe configuration and provided their Brillouin gains and frequencies for an extended range of core sizes and GeO2 doping. Parameter ranges close to cutoff of the acoustic modes and pump depletion enhance the ratio of higher-order peaks to the main peak in the Brillouin spectrum and are suitable for simultaneous strain-temperature sensing. (c) 2005 Optical Society of America.