单光纤位移传感器耦合效率的解析表达式

ANALYTICAL EXPRESSION FOR COUPLING EFFICIENCY OF SINGLE MULTIMODE OPTICAL FIBRE DISTANCE SENSORS

近距离工作条件下的位移，可用无盲区的单光纤传感器来测量．针对这种情况，作者导出了能量耦合效率的普适解析表达式。

When the working range is very small,the displacement can be measured with a single multimode optical fibre sensor which has no blind zone.For this case,we have deduced the analytical expression for energy coupling efficiency.In addition,comparison between results predicted by this theory and those conventionally used has also been made.