Abstract
In this work, a tellurite microstructed optical fiber (TMOF) was designed and fabricated by 78TeO<sub>2</sub>-5ZnO-12LiCO<sub>3</sub>-5Bi<sub>2</sub>O<sub>3</sub> (TZLB) glass, which provided an opportunity for investigating the stimulated Raman scattering (SRS) and four wave mixing (FWM). Using a nanosecond laser operated at 1545 nm as a pump signal, mid-infrared cascaded SRS was observed. At 60 mW, the continuous-wave (CW) signal gain was as high as 10.46 dB. During the FWM process, with the CW signal wavelengths changing from 1547 nm to 1560 nm, a maximum conversion efficiency (CE) of −27.05 dB was obtained. The SRS and FWM in the TMOF were numerically simulated, and the obtained results agreed well with the experiment. To the best of our knowledge, it was the first time to demonstrate simultaneously SRS and FWM in a TMOF. The proposed TMOF of extremely high nonlinearity can be exploited for the development of multifunctional multiplexing devices of Raman amplifiers and wavelength converters, and is expected to meet the increasing requirements of high-performance all-optical devices.
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