Abstract

A chalcogenide-tellurite hybrid optical fiber with a step-index structure is fabricated by the rod-in-tube drawing technique. The core is made of 15Ge-3Ga-12Sb-70S (mol. %) glass, and the cladding is made of $78{\mathrm{TeO}}_2\text{-}5\mathrm{ZnO}\text{-}12{\mathrm{Li}}_2\mathrm{O}\text{-}5{\mathrm{Bi}}_2{\mathrm{O}}_3$ (mol. %) glass. The refractive index difference $\mathrm{\Delta }n=0.24$. Tunable third-harmonic generation from 568 to 869 nm is observed when the optical fiber is pumped by an optical parametric oscillator with the pump wavelength changing from 1700 to 2600 nm.

© 2014 Optical Society of America

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