| Summary: | In this paper, multi-pair cross-phase modulation instability (XPMI) induced by multiple modes was experimentally observed in the deep normal dispersion regime of a tellurite high birefringence microstructured optical fiber (HBMOF) fabricated based on 76.5TeO<sub>2</sub>-6Bi<sub>2</sub>O<sub>3</sub>-11.5Li<sub>2</sub>O-6ZnO (TBLZ) glass. At the pump wavelength of 1062.7 nm three modes were emitted, whose modal birefringence was on the order of >10<sup>-5</sup>, providing a good platform for the multi-pair XPMI generation. During the experimental investigation, a picosecond laser was adopted as the pump source, and a three-pair XPMI induced by the three modes was observed in the deep normal dispersion regime of the tellurite HBMOF. This work May provide reference for the development of multi-wavelength fiber amplifiers and all-optical modulators.
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