Compact high-sensitive Mach-Zehnder-based optical fiber sensor for monitoring gaseous acetone concentrations

IF 2.7 3区 计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Yosra Hussain Kadhum , Ansam M. Salman , Abdulhadi Al-Janabi
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Abstract

A high-sensitivity, fine selectivity, and good repeatability optical fiber sensor has been proposed and fabricated for trace detection of acetone vapor concentration in the environment based on the Mach-Zehnder interferometer. The proposed sensor construction was made by splicing a no-core fiber (NCF) segment between two single-mode fiber (SMF) segments to form SMS construction. The specific interaction of acetone with the sensitive taper region of the NCF varied the effective refractive index of the propagating modes, permitting the determination of acetone concentration via tracking the interference fringes of the transmitting spectra. The resultant data show that the fabricated fiber sensor can realize the highest sensitivity with about 1.287×10-5 nm/ppm with a detection limit of 38 ppm in the 3.5 ×105–9.5×105 ppm concentration range. This sensor shows high stability with good repeatability and a fast response time. Meanwhile, the proposed sensor has a high ability in biomedical applications for early diagnosis of diseases and examination, as it can identify and detect lots of biological elements by employing the correlation between physical parameters and the resultant alteration in interfering fringes.
紧凑型高灵敏度mach - zehnder光纤传感器,用于监测气体丙酮浓度
基于Mach-Zehnder干涉仪,提出并制作了一种高灵敏度、高选择性、高重复性的环境中丙酮蒸气浓度的光纤传感器。所提出的传感器结构是通过在两个单模光纤(SMF)段之间拼接无芯光纤(NCF)段来形成SMS结构。丙酮与NCF敏感锥区的特异相互作用改变了传播模式的有效折射率,从而可以通过跟踪透射光谱的干涉条纹来测定丙酮的浓度。结果表明,在3.5 ×105-9.5×105 ppm浓度范围内,光纤传感器的最高灵敏度约为1.287×10-5 nm/ppm,检出限为38 ppm。该传感器稳定性高,重复性好,响应时间快。同时,该传感器可以利用物理参数之间的相关性和由此产生的干涉条纹的变化来识别和检测大量的生物元素,在生物医学应用中具有很高的能力,可以用于疾病的早期诊断和检查。
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来源期刊
Optical Fiber Technology
Optical Fiber Technology 工程技术-电信学
CiteScore
4.80
自引率
11.10%
发文量
327
审稿时长
63 days
期刊介绍: Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.
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