量子电子学报

• 纤维与波导光学 • 上一篇    下一篇

非膜片式全光纤结构音频传感器

魏常1, 王玉莲2, 时金辉3, 张国生4 甄胜来5, 徐峰6*, 俞本立7   

  1. 安徽大学光电信息获取与控制教育部重点实验室,安徽 合肥 230601
  • 出版日期:2019-03-28 发布日期:2019-03-20
  • 作者简介:魏常 (1991-),男,安徽,硕士生,从事集成光器件的研究。 E-mail:1552398996@qq.com
  • 基金资助:
    Supported by National Key Research and Development Program(国家重点研发计划,2016YFC0301902), The Key Program in the Youth Elite Support Plan in Universities of Anhui Province in 2016,安徽省2016年高校优秀青年人才支持计划重点项目,gxyqZD2016014,University Science Research Projectof Anhui Province,安徽省高校自然科学研究项目,KJ2016SD64)

Membrane-free All-fiber Acoustic Sensor

WEI Chang1, WANG Yulian2, SHI Jinhui3, ZHANG Guosheng4 ZHEN Shenglai5, XU Feng6*, YU Benli7   

  1. Key Laboratory of Opto-electronic Information Acquistion and Manipulation, Ministry of Education, AuHui University, HeFei , 230601, China
  • Published:2019-03-28 Online:2019-03-20

摘要: 提出并制作了一种基于法布里珀罗腔的非膜片式全光纤结构音频传感器。通过对该音频传感器的音频信号响应特性进行测试,实验结果表明该传感器在噪声限制下,最小可检测声压可达38.9 ,且由于采用是全光纤结构因而具有良好的温度稳定性,相比于膜片式光纤音频传感器,其结构简单,容易制作,并且具有良好的线性声压响应等优点,表明该传感器在音频检测领域具有潜在的应用价值。

关键词: 纤维与导波光学, 音频传感器, 法布里珀罗腔, 波长漂移

Abstract: A membrane-free all fiber acoustic sensors based on a fiber-optic Fabry-Perot cavity is proposed and demonstrated. The acoustic response properties of the proposed sensor were exploited and the experimental results show that under the noise limit, the minimum acoustic pressure of the sensor can be detected approach to 38.9 . Meanwhile, the sensing probe has a good temperature stability benefiting from its all-fiber structure. Compared with the sensors based on the acoustic sensing diaphragm, our proposed sensor possesses a strong structure, easy to make and has good linear response to acoustic pressure, which implies that such sensors could be widely used as microphone in applications of high acoustic pressure fields.

Key words: fiber and waveguide optics, acoustic sensor, fabry-perot cavity, wavelength shift