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。
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。
The reflection spectrum, time delay, and group velocity dispersion (GVD) of the gratings are analyzed.
并对此种光栅的反射谱，时延及群速度色散进行了理论分析；
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