Figure 7
From: Highly sensitive fiber-optic accelerometer by grating inscription in specific core dip fiber
(a) Schematic of a circularly bent fiber, (b) Refractive index distribution of an unstressed (up), bent fiber (down), (c) E-field distribution of straight fiber, (d) E-field distribution of bent fiber in a certain degree, and (e) and (f) magnified schematic evolution of the fundamental mode with fiber bend (the average power of the E-field is forced to move out the fiber dip and eventually loss out fiber).
