【摘要】 本文给出了一个描写光纤端出射光场的一个通用公式.该公式与光场分布的实测数据相符合,可用于外部调制强度型光纤传感器的调制机理分析以及新型调制方法的设计.在此基础上,给出了反射型光纤位移传感器的特性调制函数.其实验结果与计算结果相符合,再次表明了纤端出射光场场强分布公式的普通适用性.更多还原

【Abstract】 A general formula which describes the output optical field intensity distribution formed by the end of and optical fiber is given in this paper. This formu-la is in agreement with the experimental data and it not only can be used to analyze the mechanism of intensity modulated fiber-optic sensors but also can be used to de-sign the new modulation ways conveniently. On the basis of the intensity distribution, the characteristic modulating function os the type of reflective displacement fi-ber-optic sensor is deduced. The results show that the theoritical curve is in agree-ment with the experimentik data and thus instified again that the intensity distribution formula is widely applicable.更多还原