i have a small query in optical fibers. . .
optical fibers employ the total internal reflection [TIR] to propagate the wave thro them . . and TIR occurs only when the angle of incidence is less than that of critical angle . .
my doubt is when angle of incidence = critical angle then the wave travels thro the interface between the two mediums .. what happens to the energy of the wave . . where does it go as the light doesn't emerge thro the other end of the fiber
optical fibers employ the total internal reflection [TIR] to propagate the wave thro them . . and TIR occurs only when the angle of incidence is less than that of critical angle . .
my doubt is when angle of incidence = critical angle then the wave travels thro the interface between the two mediums .. what happens to the energy of the wave . . where does it go as the light doesn't emerge thro the other end of the fiber