Abstract

A minimum configuration Michelson fiber-optic low-coherence interferometric quasi-distributed sensing system is proposed that permits absolute length measurement in remote reflective sensor arrays. The sensor’s reflective signal characteristics have been analyzed, and the relationship between intensities of light and number of sensors is given for evaluation of multiplexing potential. The proposed sensing scheme will be useful for the measurement of strain distribution. An important application may be strain monitoring in smart structures. Experimentally, four-sensor array has been demonstrated.

© 2004 Optical Society of America

Schemes of a fiber-optic multiplexing sensor array based on a 3×3 star coupler

Libo Yuan and Jun Yang
Opt. Lett. 30(9) 961-963 (2005)

Design of a fiber-optic quasi-distributed strain sensors ring network based on a white-light interferometric multiplexing technique

Libo Yuan, Limin Zhou, Wei Jin, and Jun Yang
Appl. Opt. 41(34) 7205-7211 (2002)

Tunable Fabry–Perot-resonator-based fiber-optic white-light interferometric sensor array

Libo Yuan and Jun Yang
Opt. Lett. 33(16) 1780-1782 (2008)

Multiplexed, white-light interferometric fiber-optic sensor matrix with a long-cavity, Fabry-Perot resonator

Li-Bo Yuan
Appl. Opt. 41(22) 4460-4466 (2002)

White-light interferometric fiber-optic strain sensor from three-peak-wavelength broadband LED source

Libo Yuan
Appl. Opt. 36(25) 6246-6250 (1997)