理论和实验研究表明，参量放大的带宽取决于泵浦波长和泵浦功率、光纤非线性系数、光纤的色散特性。
Theory and experiment show that bandwidth of FOPA depends on pumping wavelength and pumping power, optical fiber nonlinear coefficient as well as dispersion characteristics.
特点：产品增益带宽高，输出电容小，噪声系数低。
Features: High gain bandwidth product, small output capacitance, low noise figure.
随着孔隙率、孔径的减小，多孔铝的共振吸声系数有所下降，吸声频谱曲线向低频方向移动，且频带宽度展宽。
When the porosity and pore diameter reduced, the sound absorption curve moved to the low frequency zone and the frequency bandwidth increased at the same time.
详细研究了光纤参量放大系统中的增益和带宽与各主要参数如光纤长度、色散斜率、非线性系数、泵浦光功率等的关系。
Some parameters such as fiber length, dispersion slope, nonlinearity coefficient, and pump power have important impact on gain and bandwidth in optical fiber amplification system.
光吸收系数以及禁带宽度均随薄膜厚度的增加而下降。
Both the optical absorption coefficient and bandgap decrease with increasing in film thickness.
首次提出了根据屈服带宽度和条带煤柱宽度来确定条带开采安全系数的方法，同时给出了设计条带开采尺寸的步聚。
It is first raised that safety coefficient can be calculated by using the widths of yield zone and pillar, and the steps of designing the strip mining size are pro-posed.
金刚石具有高导热率、低介电系数、高禁带宽度、超高硬度、低摩擦系数等性质，在国民经济的许多部门得到了广泛的应用。
Diamond has many characters, such as high thermal, low permittivity, high band gap, super high hardness, low friction etc, which makes it possible to be widely used in industry.
对低噪声放大器的基本要求是：噪声系数低、足够的功率增益、工作稳定性可靠、足够的带宽和大的动态范围等。
The basic requirements of the LNA include: low noise figure, enough power gain, reliable work stability, sufficient bandwidth and the wide dynamic range.
②随着啁啾系数增大，透射谱带宽增大，透射率降低，滤波性能变坏；
The transmission spectrum bandwidth increases with the chirp parameter, while the transmission decreases, which leads to worse filter feature;
②随着啁啾系数增大，透射谱带宽增大，透射率降低，滤波性能变坏；
The transmission spectrum bandwidth increases with the chirp parameter, while the transmission decreases, which leads to worse filter feature;
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