High-Sensitive Acoustic Sensor Based on Microfiber Mach–Zehnder Interferometer with Tapered Polarization-Maintaining Fiber

IF 2.3 4区物理与天体物理 Q2 OPTICS

Fiber and Integrated Optics Pub Date : 2022-02-25 DOI:10.1080/01468030.2022.2042626

Xiaojun Zhu, Wen Liu, Dan Sun, Guoan Zhang, Li Zou, Zhipeng Liang, Zhanghua Han, Yue-chun Shi

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引用次数: 3

Abstract

ABSTRACT We propose a high sensitive acoustic sensor based on a microfiber Mach-Zehnder interferometer (MMZI) with tapered polarization-maintaining fiber (PMF). The optical tapering technology is used to taper the PMF. Then, the MMZI is attached to a wood pulp diaphragm (WPD) to form an acoustic sensor, whose curvature will change with the vibration of the diaphragm. Two sensors with different waist diameters are made for performance comparison. Experimental results show that the acoustic sensor can achieve a wideband frequency response range from 200 Hz to 4000 Hz. The responses are flat at frequencies ranging from 200 Hz to 1500 Hz. Moreover, we find that the sensing performance of the acoustic sensor improves with the decrease in its waist diameter. When the waist diameter is 25.72 μm, the response sensitivity of the sensor can reach 42.4 mV/kPa at 2000 Hz, and the minimum detection pressure is 1.24 Pa/√Hz. It provides an effective way to fabricate an acoustic sensor, with low cost, easy integration, and high sensitivity.

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基于锥形保偏光纤Mach-Zehnder干涉仪的高灵敏度声传感器

摘要提出了一种基于锥形保偏光纤(PMF)的超光纤马赫-曾德尔干涉仪(MMZI)的高灵敏度声传感器。采用光学变细技术使PMF变细。然后，将MMZI与木浆膜片(WPD)连接，形成声波传感器，其曲率随膜片的振动而变化。制作了两种不同腰径的传感器进行性能比较。实验结果表明，该声传感器可实现200 ~ 4000 Hz的宽带频响。在200赫兹到1500赫兹的频率范围内，响应是平坦的。此外，我们发现声传感器的传感性能随其腰径的减小而提高。当腰径为25.72 μm时，传感器在2000 Hz下的响应灵敏度可达42.4 mV/kPa，最小检测压力为1.24 Pa/√Hz。该方法具有成本低、易于集成、灵敏度高的特点，是一种有效的声传感器制造方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fiber and Integrated Optics 物理-光学

CiteScore

3.40

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Fiber and Integrated Optics , now incorporating the International Journal of Optoelectronics, is an international bimonthly journal that disseminates significant developments and in-depth surveys in the fields of fiber and integrated optics. The journal is unique in bridging the major disciplines relevant to optical fibers and electro-optical devices. This results in a balanced presentation of basic research, systems applications, and economics. For more than a decade, Fiber and Integrated Optics has been a valuable forum for scientists, engineers, manufacturers, and the business community to exchange and discuss techno-economic advances in the field.