Abstract
This study demonstrates the theoretical operation of an all-optical silica fiber isolator using stimulated Brillouin scattering. Two pump sources that copropagate through a double-mode fiber generate acoustic waves through electrostriction. These acoustic waves then induce unidirectional interband optical transitions between a separate pair of signal sources. With 1 W of total input pump power, complete optical isolation is achieved with a silica rod waveguide of radius 0.67 μm over a length of approximately 12 m, with pumps operating at a wavelength of 1.55 μm and signals at 1.50 μm.
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