Photonic Sensors, 2019, 9 (3): 230, 网络出版: 2019-09-08   

Broadband acoustic Vibration Sensor Based on Cladding-Mode Resonance of Double-Cladding Fiber

Broadband acoustic Vibration Sensor Based on Cladding-Mode Resonance of Double-Cladding Fiber
作者单位
1 Changcheng Institute of Metrology & Measurement, Beijing 100095, China
2 Key Laboratory of Specialty Fiber Optics and Optical access Networks, Joint International Research Laboratory of Specialty Fiber Optics and advanced Communication, Shanghai Institute for advanced Communication and Data Science, Shanghai University, Shanghai 200444, China
摘要
Abstract
We have proposed and demonstrated a double-cladding fiber (DCF) with cladding-mode resonance property for broadband acoustic vibration sensing. Since the fundamental mode in the core waveguide is able to be coupled to LP05 mode in the tube waveguide once the phase-matching condition is fulfilled, the transmission spectrum can exhibit a dip with a large extinction ratio. an acoustic vibration could induce the wavelength shift of such transmission spectrum, so that the intensity variation at a wavelength near the dip is coded with the information of the acoustic vibration signal. By demodulating the response of intensity variation, the frequency of the applied acoustic vibration signal can be recovered. Such a DCF-based sensor with an intensity modulation could measure the acoustic vibration with a broadband frequency range from 1 Hz to 400 kHz and exhibits the maximum signal-to-noise ratio (SNR) of ~80.79 dB when the vibration frequency is 20 kHz. The obtained results show that the proposed DCF-based acoustic vibration sensor has a potential application in environmental assessment, structural damage detection, and health monitoring.

Guanghui SUI, Huanhuan LIU, Fufei PaNG, Jiajing CHENG, Tingyun WaNG. Broadband acoustic Vibration Sensor Based on Cladding-Mode Resonance of Double-Cladding Fiber[J]. Photonic Sensors, 2019, 9(3): 230. Guanghui SUI, Huanhuan LIU, Fufei PaNG, Jiajing CHENG, Tingyun WaNG. Broadband acoustic Vibration Sensor Based on Cladding-Mode Resonance of Double-Cladding Fiber[J]. Photonic Sensors, 2019, 9(3): 230.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!