Abstract

An all-fiber isolator with 17 dB optical isolation is demonstrated. The fiber Faraday rotator uses 56 wt. % terbium (Tb)-doped silicate fiber, and the fiber polarizers are Corning SP1060 single-polarization fiber. The effective Verdet constant of the Tb-doped fiber is measured to be $-24.5\pm 1.0\text{\hspace{0.17em} rad}/\left(\text{Tm}\right)$ at 1053 nm, which is 20 times larger than silica fiber and 22% larger than previously reported results.

© 2010 Optical Society of America

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