Abstract

A doubly cladding single-mode fiber humidity sensor is fabricated by agarose. The sensor has an insertion loss of -0.08 dB and a power change of -17.83 dB. The responses of the sensor to a relative humidity (RH) range form 30% to 100% at a temperature range form 25 to 34 oC are validated. The experiments demonstrate that the absorbability of agarose gel to moisture decreases with increasing RH in measured gas. We propose a calibration method that uses lookup tables and construct a corresponding calibration matrix. Using the sensor, we conduct real-time monitoring of RH in fresh concrete during its hardening process.

© 2013 Chinese Optics Letters

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T. Li, X. Dong, C. C. Chan, C.-L. Zhao, and P. Zu, IEEE Sensors J. 12, 2205 (2012).

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X. Zhang, D. Yan, S. Mo, and Z. Nong, Proc. SPIE 7508, 750807 (2009).

Y. Miao, B. Liu, H. Zhang, Y. Li, H. Zhou, H. Sun, W. Zhang, and Q. Zhao, IEEE Photon. Technol. Lett. 21, 441 (2009).

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Y. Miao, B. Liu, H. Zhang, Y. Li, H. Zhou, H. Sun, W. Zhang, and Q. Zhao, IEEE Photon. Technol. Lett. 21, 441 (2009).

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X. Zhang, X. Ye, and Z. Chen, Acta Opt. Sin. (in Chinese) 31, 0606004 (2011).

X. Zhang, D. Yan, S. Mo, and Z. Nong, Proc. SPIE 7508, 750807 (2009).

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T. Li, X. Dong, C. C. Chan, C.-L. Zhao, and P. Zu, IEEE Sensors J. 12, 2205 (2012).

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Y. Miao, B. Liu, H. Zhang, Y. Li, H. Zhou, H. Sun, W. Zhang, and Q. Zhao, IEEE Photon. Technol. Lett. 21, 441 (2009).

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Y. Miao, B. Liu, H. Zhang, Y. Li, H. Zhou, H. Sun, W. Zhang, and Q. Zhao, IEEE Photon. Technol. Lett. 21, 441 (2009).

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T. Li, X. Dong, C. C. Chan, C.-L. Zhao, and P. Zu, IEEE Sensors J. 12, 2205 (2012).

Acta Opt. Sin. (in Chinese) (1)

X. Zhang, X. Ye, and Z. Chen, Acta Opt. Sin. (in Chinese) 31, 0606004 (2011).

Chin. Opt. Lett. (1)

IEEE Photon. Technol. Lett. (1)

Y. Miao, B. Liu, H. Zhang, Y. Li, H. Zhou, H. Sun, W. Zhang, and Q. Zhao, IEEE Photon. Technol. Lett. 21, 441 (2009).

IEEE Sens. J. (1)

A. Gaston, I. Lozano, F. Perez, F. Auza, and J. Sevilla, IEEE Sens. J. 3, 806 (2003).

IEEE Sensors J. (1)

T. Li, X. Dong, C. C. Chan, C.-L. Zhao, and P. Zu, IEEE Sensors J. 12, 2205 (2012).

J. Lightwave Technol. (1)

Meteorol. Appl. (1)

E. Eccel, Meteorol. Appl. 19, 118 (2012).

Opt. Express (1)

Opt. Lett. (1)

Proc. SPIE (1)

X. Zhang, D. Yan, S. Mo, and Z. Nong, Proc. SPIE 7508, 750807 (2009).

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