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从理论上分析了温度变化对刻纹光纤中传输光功率的影响,计算出它的输出功率的温度灵敏度δP/P·δT为10~(-6)/C量级。结果与实验相符,表明刻纹光纤不宜于直接用作温度传感。这正符合应力、应变等传感要求。
The influence of temperature variation on the transmitted light power in the grooved fiber is theoretically analyzed. The temperature sensitivity of output power δP / P · δT is calculated to be on the order of 10 ~ (-6) / C. The results agree with the experiment, indicating that the optical fiber is not suitable for direct use as a temperature sensor. This is in line with the stress, strain and other sensing requirements.