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Comparative analysis of stimulated Brillouin scattering at 2 µm in various infrared glass-based optical fibers
Journal of the Optical Society of America B ( IF 1.9 ) Pub Date : 2020-11-18 , DOI: 10.1364/josab.401252
M. Deroh , J.-C. Beugnot , K. Hammani , C. Finot , J. Fatome , F. Smektala , H. Maillotte , T. Sylvestre , B. Kibler

We provide experimental characterization of stimulated Brillouin scattering at 2-µm wavelength in step-index optical fibers made of various types of infrared materials. Our results show that the main characteristics of the Brillouin process such as the frequency shift, spectral linewidth, and gain can be widely tuned through the index-controlled guiding of both acoustic and optical waves as well as the intrinsic material properties of the fiber under test. More precisely, we found that depending on the used material the Brillouin frequency shift can be decreased by 30% in a common step-index fiber design, while its linewidth and gain efficiency can be increased by a factor 5 and 180, respectively, when compared with the standard silica fiber. Four families of fiber materials were analyzed near 2 µm as well as at 1.55 µm for comparison—namely, germanosilicate, zirconium fluoride, tellurium oxide, and sulfur-based chalcogenide. Our findings open the way for further fundamental investigations of stimulated Brillouin scattering and the development of practical applications in the 2-µm spectral range.

中文翻译:

各种红外玻璃基光纤中受激布里渊散射在2 µm处的比较分析

我们提供了由各种红外材料制成的阶跃折射率光纤中2 µm波长处受激布里渊散射的实验特性。我们的结果表明,布里渊(Brillouin)过程的主要特征,例如频移,频谱线宽和增益,可以通过声波和光波的折射率控制导引以及被测光纤的固有材料特性来进行广泛调整。 。更准确地说,我们发现,根据使用的材料,在普通的阶跃折射率光纤设计中,布里渊频移可以降低30%,而与之相比,其线宽和增益效率可以分别提高5倍和180倍。与标准的石英纤维。为了比较,分析了4个系列的纤维材料在2 µm和1.55 µm附近进行比较。锗硅酸盐,氟化锆,氧化碲和硫基硫属化物。我们的发现为受激布里渊散射的进一步基础研究以及在2 µm光谱范围内的实际应用开发开辟了道路。
更新日期:2020-12-02
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