Sensitivity Enhancement of Heterocore Macrobend Fiber Optics by Adding a ZnO Film

Figure 2

The electric field propagating along the macrobend heterocore of fiber optic when the refractive index of cladding is (a)  = 1.4612, (b)  = 1, and (c)  = 1.709.

(a)

(b)

(c)