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mode field diameter
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mode field diameter
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工学
单模光纤模场直径测量
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mode field diameter
单模光纤模场直径测量
光在光纤中传播,实际上能量传输并不像几何光学中那样描述集中在纤芯中,而是部分能量在包层中传输。因此纤芯直径不能反映光纤中的能量分布,于是提出了有效面积的模场直径概念。模场直径(MFD)用来表征在单模光纤的纤芯区域基模光的分布状态。
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