Li Xizhong, Shi Weihua, Qian Liguo, et al. Study on and design of an interferometer-based PCF sensor[J]. 2012,(2):42-44. DOI: 10.13756/j.gtxyj.2012.02.007.
A Photonic Crystal Fiber(PCF) sensor for cascaded Long Period Grating(LPG) is designed on the basis of its coupling effect and its strain sensing characteristics studied.Analysis is made of the impacts of strain on the interference spectrum of the cascaded LPG and the relationship between the strain and the interference peak is calculated
the result of which shows that this structure has a fairly high sensitivity and good linear relationship.