Abstract

A method of safe chemical etching of optical fibers for their subsequent application in sensor and laser technologies has been developed. A series of thinned fibers (tapers) with diameters of the thin part of 5.7 to 24.1 μm and lengths of 2.3 to 11.1 mm was prepared. Using a frequency reflectometer, the location of the resulting losses in small-diameter tapers is shown. There is a strong dependence of the losses that occur on defects on the surfaces of cones and the cylindrical part of a taper. LMR resonances were observed in the transmission spectra of large-diameter tapers when thin ZnTe films were deposited on them. Their sensitivity to changes in the refractive index of aqueous solutions was 5230 nm/RIU (refractive index unit). A polymer composite with Bi₂Se₃, MoSe₂, and NiO nanopowders was applied to tapers with diameters of less than 10 μm. They were used in this form as passive Q-factor switches in a ring fiber erbium laser.

中文翻译：

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通过化学蚀刻形成光纤锥度，用于光纤传感器和激光器

摘要

已经开发了一种安全地化学蚀刻光纤的方法，以便随后将其应用在传感器和激光技术中。制备了一系列变细的纤维（锥度），其薄部分的直径为5.7至24.1μm，长度为2.3至11.1 mm。使用频率反射仪，显示了小直径锥度中产生的损耗的位置。发生的损耗与圆锥体的表面和圆锥体的表面上的缺陷有很大的关系。当在其上沉积薄的ZnTe薄膜时，在大直径锥度的透射光谱中观察到LMR共振。它们对水溶液折射率变化的敏感性为5230 nm / RIU（折射率单位）。具有Bi ₂ Se ₃，MoSe _2的聚合物复合材料，然后将NiO纳米粉应用于直径小于10μm的锥度。它们以这种形式用作环形光纤激光器中的无源Q因子开关。