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光强调制型光纤传感器，已得到广泛的应用，它的测量灵敏度、精度和稳定性。主要取决于光源输出功率的稳定性。传统的办法是采用引入参考光路，利用光电补偿方法，来减小光源波动造成的影响。我们提出采用光学双稳装置来稳定光源输出功率，并将它用於折射率调制型光纤传感器测量液体浓度的实验中。本文详细报导了该装置的原理，内容和测量结果，并指出进一步研究方向。
Light modulation optical fiber sensor has been widely used, its measurement sensitivity, accuracy and stability. Mainly depends on the stability of the light output power. The traditional approach is to use the introduction of reference light path, the use of photoelectric compensation method to reduce the impact of light source fluctuations. We propose to use an optical bistable device to stabilize the output power of the light source and to use it in the experiment of measuring the liquid concentration of a refractive index modulated optical fiber sensor. This paper details the principle, content and measurement results of the device, and points out further research directions.