The experiments has shown that the spectrum of reflection hologram presents obvious non-symmetry, and is accompanied with a series of sub-peaks.

实验表明，反射全息图的衍射光谱呈现出明显的非对称性，并伴随着一系列次峰的出现。

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It was found that the transmission spectrum of the filter is the cosine function modulated reflection spectrum of the fiber grating.

结果表明该滤波器的透射光谱是余弦函数调制后的光纤光栅反射光谱。

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LED was used as broad_band source to attain reflection spectrum and measure tiny_displacement of practical sample.

用LED作为宽带光源所得到的反射光谱可用于实际样品的微位移测量。

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