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首页> 外文期刊>Journal of Optics >Determination of polarization properties of piezoelectric nanocomposite particles (BiFe_(0.9)Co_(0.1)O_3) using fiber-optic cantilever beam deflection approach
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Determination of polarization properties of piezoelectric nanocomposite particles (BiFe_(0.9)Co_(0.1)O_3) using fiber-optic cantilever beam deflection approach

机译：使用光纤悬臂梁偏转方法测定压电纳米复合粒子（BIFE_（0.9）CO_（0.1）O_3）的偏振特性

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摘要

We experimentally demonstrate a new method to determine the polarization properties of piezoelectric nanocomposite materials using fiber-optic cantilever beam deflection principle. We used an optimized composition of BiFe0.9Co0.1O3 nanoparticles as a sample coated on a selected segment of the exit end of a single-mode optical fiber to devise the beam-deflecting cantilever assembly in a surrounding electric field. Performing series of experiments by systematically varying the associated parameters, namely coated length, coating thickness of deflecting fiber probe, polarization properties at different electric field intensities is determined. As an initial attempt, we devise a fiber-optic double-slit type arrangement and calculate the polarization values by measuring the fringe-width variation of interference pattern as a function of applied electric field. Through a progressive experimental development, we embed the fiber beam deflection transducer in a fiber-to-fiber signal transmission configuration. Polarization values are now determined in terms of transmitted power variation with applied electric field. The sensitivity is further enhanced by a cascaded assembly of cantilevers. We report a sensitivity similar to 0.067 kV/cm using our set-up and determine the polarization values that are known otherwise from the literature, thereby establishing the efficacy of this new approach.
机译：我们通过光纤悬臂梁偏转原理确定了一种新方法来确定压电纳米复合材料的极化特性。我们使用了一份BiFe0.9CO0.1O3纳米颗粒的优化组合物，作为涂覆在单模光纤出射端的出射端的选定区段上的样品，以将光束偏转悬臂组件设计在周围的电场中。通过系统地改变相关参数，即涂覆的长度，偏转纤维探针的涂层厚度来执行一系列实验，确定不同电场强度的偏振特性。作为初始尝试，我们设计了光纤双缝型布置，并通过测量作为应用电场的函数的干扰图案的条纹宽度变化来计算偏振值。通过渐进式实验开发，我们将光纤束偏转传感器嵌入光纤到光纤信号传输配置中。现在根据具有应用电场的透射功率变化来确定极化值。通过悬臂器的级联组装进一步增强了灵敏度。我们通过我们的设置报告了类似于0.067 kV / cm的灵敏度，并确定从文献中否定的偏振值，从而建立这种新方法的功效。

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