Faraday rotation is obtained in highly birefringent single-mode fibers by using alternating or periodically spaced regions of magnetic field. This approach has potential applications in isolators, circulators, combination tuning and unidirectional elements, and for studying fiber birefringence.
© 1980 Optical Society of America
R. H. Stolen and E. H. Turner, "Faraday rotation in highly birefringent optical fibers," Appl. Opt. 19, 842-845 (1980)