We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Vibration Sensor Based on Hollow Biconical Fiber.
- Authors
Zhang, Yingfang; Xu, Ben; Wang, Dongning; Guo, Yun; Chen, Min; Chen, Weicheng; Guo, Penglai; Peng, Xiaoling; Li, Jianqing
- Abstract
A hollow biconical fiber is proposed and experimentally demonstrated for vibration sensing. It is fabricated by creating an air micro-cavity in single-mode fiber, followed by tapering it. Experimental results show that the device is highly sensitive to bending with a sensitivity of 21.30 dB/m−1. When it is exposed to vibration, its transmission loss is modulated periodically, then based on the measured transmission, the vibration frequency can be demodulated accurately. The acoustic vibration testing results show that the proposed device can detect and demodulate the exciting acoustic frequency accurately and distinguish its sound intensity, and the maximum signal to noise ratio (SNR) achieves up to 59 dB. Moreover, cantilever beam testing proves its performance reliable. Additionally, the sensing head has the advantages of a lightweight, compact size (with a total length of less than 250 μm), and insensitivity of temperature. All these features indicate the proposed sensor has a promising potential in the engineering field.
- Subjects
ACOUSTIC vibrations; VIBRATION tests; SIGNAL-to-noise ratio; FREQUENCIES of oscillating systems; SINGLE-mode optical fibers
- Publication
Sensors (14248220), 2021, Vol 21, Issue 4, p1023
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s21041023