Abstract
AbstractThe surface wave propagation characteristics of several isotropic single‐mode fibers are analyzed by applying the mode‐coupling theorem to left‐handed and right‐handed circularly polarized waves. In the gyrotropic fiber or unidirectional fiber, both polarized waves become eigenmodes and Faraday rotation occurs at linearly polarized wave incidence due to the difference in propagation constants. The rotation angle in the fiber in which the core and clad have the same anisotropy is identical to the rotation angle of a plane wave propagating in infinite gyrotropic media. The 45° Faraday rotator may be constructed by these fibers with sufficiently practical length.
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