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Using random fiber laser to suppress the noise in an interferometric optical fiber sensing system
Author(s): Wentao Zhang; Peide Liu; Wenzhu Huang; Fang Li
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Paper Abstract

In this manuscript, we propose a new technique to suppress the noise level in an interferometric optical fiber sensing system. Previous work shows that laser frequency noise is the main factor that limits the resolution in a phase generated carrier (PGC) demodulation system. Using a bidirectional pumped random distributed feedback fiber laser (RDFL), the laser frequency noise can be suppressed from 30 Hz/√Hz to 4 Hz/√Hz above 1 kHz. Therefore, the wavelength resolution is improved from 5×10-7 pm/√Hz@ 1 kHz to 5×10-8 pm/√Hz@ 1 kHz.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111993B (28 August 2019); doi: 10.1117/12.2541256
Show Author Affiliations
Wentao Zhang, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (Chile)
Peide Liu, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Wenzhu Huang, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Fang Li, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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