提出一种基于空芯光子晶体光纤(HCPCF,hollow core photonic crystalfiber)的Fabry-Perot(HCPCF F-P)干涉应变传感器进行大容量的波分频分复用实验。HCPCFF-P应变传感器的干涉腔长度可达cm数量级,并且温度对应变的交叉影响小。优化制作了HCPCFF-P应变传感器,重点研究了6个不同长度干涉腔应变传感器的波分频分复用实验。实验结果表明,复用系统的应变测量精度可达±20με。 A Fabry-Perot (HCPCF F-P) interference strain sensor based on a hollow core photonic crystal fiber (HCPCF) is proposed for large-capacity WDM OFDM experiments. The interference cavity length of the HCPCFF-P strain gauge sensor can be as long as cm, and the cross-talk between temperature and strain is small. The HCPCFF-P strain sensor was optimized and the WDM demultiplexing experiment of 6 strain sensors with different length was conducted. The experimental results show that the strain measurement accuracy of the multiplexed system can reach ± ​​20με.