Intensity vibration sensor based on Raman fiber laser using a distributed mirror combined with Bragg grating structures

• Type: Article in International Scientific Journal
• Date: 2014

Authors

martins,hugo f hf (Author) Other; marques,manuel b mb (Author) FCUP; frazao,orlando j oj (Author) Other

Journal

Title: Applied Physics B: Lasers and Optics

Vol. 114

Pages: 455-459

ISSN: 0946-2171

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-009-A6G

DOI: 10.1007/s00340-014-5802-5

Abstract (EN): In this work, the authors propose a new configuration for an intensity vibration sensor based on a Raman fiber laser. The linear cavity of the Raman fiber laser relies on the combination of a distributed Rayleigh mirror and fiber Bragg gratings, which are used as the sensing element and intensity filter. The sensor was able to measure vibrations with frequencies of up to 350 Hz with more than 50 dB of signal-to-noise ratio (SNR) and also the amplitude of the vibrations with a sensitivity of up to 0.57 +/- A 0.07 dB/mu I mu for vibrations with a maximum strain variation of up to 35 mu I mu. The main advantages of the proposed configuration are the simple scheme with high SNR for remote sensing and the easy possibility of multiplexing.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5