CAJ | 학술논문

　　针对传统RIM-FOS中LED耦合多模光纤作为照明光纤灵敏度低的不足，引入了LD耦合单模光纤作为照明光纤的RIM-FOS光强调制模型并设计了LD耦合单模光纤作为照明的RIM-FOS位移传感实验系统。实验系统由激光器模块、光学单元、光电探测单元、信号检测与信息采集单元、FPGA控制模块、上位机系统和电源模块等组成。归一化实验结果验证了仿真模型的正确性，并得出RIM-FOS前坡灵敏度为3.15 mV/滋m，线性测量范围为380滋m；后坡灵敏度为0.76 mV/滋m，线性测量范围为690滋m的性能指标。实验表明，该实验系统具有较好稳定性和重复性，可应用于单模光纤照射的RIM-FOS更深一步的研究。
　　침대전통RIM-FOS중LED우합다모광섬작위조명광섬령민도저적불족，인입료LD우합단모광섬작위조명광섬적RIM-FOS광강조제모형병설계료LD우합단모광섬작위조명적RIM-FOS위이전감실험계통。실험계통유격광기모괴、광학단원、광전탐측단원、신호검측여신식채집단원、FPGA공제모괴、상위궤계통화전원모괴등조성。귀일화실험결과험증료방진모형적정학성，병득출RIM-FOS전파령민도위3.15 mV/자m，선성측량범위위380자m；후파령민도위0.76 mV/자m，선성측량범위위690자m적성능지표。실험표명，해실험계통구유교호은정성화중복성，가응용우단모광섬조사적RIM-FOS경심일보적연구。
To overcome the shortcoming of low sensitivity in RIM-FOS with LED coupling with multimode fiber as illumination purpose, the intensity modulation model was built and experiment system was designed using LD coupling with single mode fiber as illumination and multimode fiber as receiving purpose. The experiment system was made up of LD module, optic module, PIN detection module, signal collection module, FPGA module, up computer system and power module. The validation of model was proved by experiment results and the performance of RIM-FOS resulting a sensitivity of 3.15 mV/μm and linear range of 380μm for front slope, a sensitivity of 0.76 mV/μm and linear range of 690μm for back slope was presented. Good stability and repetition was also proved by experimental results, and the experiment system would play a significant effect for the further study of RIM-FOS with single mode illumination.