Abstract: Photonic crystal fiber stability of the sensor in practical engineering applications, has an important influence. This paper analyzes the photonic crystal fiber optic pressure sensor of the basic principles introduced photonic crystal fiber optic pressure sensor system components, from the theoretical analysis of the sensor system relative to the light source wavelength, the output signal light intensity fluctuations and AT24C16AN datasheet and the stability of ambient temperature fluctuations. Photonic crystal fiber optic pressure sensor laser light source output power and AT24C16AN price and wavelength fluctuations, changes in the length of the sensor and AT24C16AN suppliers and the ambient temperature changes and so on affect the stability of the sensor system. 0 Introduction fiber strain and stress on the environment temperature-s...