The Examination of the effect of polarization on the radiation losses of bent optical fibers

It has long been recognized that the bending losses in weakly guiding optical fibers, is independent of the polarization for large bend radius. We showed this fact using the volume equivalent current method. The procedure is then applied to a helically bent fiber, and it is shown that the radiation from the helical fiber is also independent of the polarization as long as the fiber is weakly guiding.