The research of propagation constant in grapefruit microstructure optical fibers with lateral pressure

The influence of lateral pressure on the propagation constant of grapefruit microstructure optical fibers is theoretically investigated using a full-vector finite element method in this paper. With the different direction of lateral pressure, the change of the propagation constant of grapefruit microstructure optical fibers is different. At present, the report of this aspect has not been found out. The research has great signification in microstructure fiber sensors especially multidimensional optical fiber sensors.