Vibration Fiber Sensors Based on SM-NC-SM Fiber Structure

Vibration Fiber Sensors Based on SM-NC-SM Fiber Structure

A novel vibration sensor based on the single mode (SM)-no core (NC)-SM fiber structure is proposed and experimentally sensing results demonstrated. By numerical simulation, we use an NC fiber (NCF) as the multimode waveguide structure for the multimode interference (MMI) sensing. Through intensity d...

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Bibliographic Details
Main Authors: Yanli Ran, Li Xia, Ya Han, Wei Li, Jalal Rohollahnejad, Yongqiang Wen, Deming Liu
Format: Article
Language:English
Published: IEEE 2015-01-01
Series:IEEE Photonics Journal
Subjects:
No core fiber
Intensity demodulation
Vibration sensing
Online Access:https://ieeexplore.ieee.org/document/7053907/
Description
Summary:A novel vibration sensor based on the single mode (SM)-no core (NC)-SM fiber structure is proposed and experimentally sensing results demonstrated. By numerical simulation, we use an NC fiber (NCF) as the multimode waveguide structure for the multimode interference (MMI) sensing. Through intensity demodulation, the vibration sensing structure can detect continuous vibration disturbances with the frequencies of ranging from 100 Hz to 29 kHz and the inherent frequency of cantilever slab of 700 Hz. The frequency sensing resolution is 1 Hz in real-time monitoring. The proposed compact structure is easy to fabricate and has low cost.
ISSN:1943-0655

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