Abstract

We demonstrate a novel technique for the interrogation of grating-based fiber optic sensors. The proposed technique is based on space-to-wavelength mapping using an arrayed waveguide grating (AWG). The beam position along the AWG input coupler is controlled by a closed-loop piezoelectric motor. By employing a real-time position feedback encoder, the absolute position of the input light beam can be accurately obtained, which would yield a precise interrogation of the wavelength due to a fixed relationship between the beam position and the transmission wavelength of the AWG channel. The proposed system for the interrogation of fiber Bragg grating (FBG) sensors and a tilted-FBG sensor is experimented. An interrogation resolution of 3 pm and an interrogation range of 18 nm are demonstrated as well as the multichannel measurement capability. Initial results show that the proposed interrogation system has the potential of being packaged into a compact, light weight, and cost-effective interrogator with good performance.

© 2010 IEEE

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2010 (1)

2009 (1)

2008 (4)

2004 (1)

2003 (3)

Y. Sano, T. Yoshino, "Fast optical wavelength interrogator employing arrayed waveguide grating for distributed fiber Bragg grating sensors," J. Lightw. Technol. 21, 132-139 (2003).

P. Niewczas, A. J. Willshire, L. Dziuda, J. R. McDonald, "Performance analysis of the fiber Bragg grating interrogation system based on an arrayed waveguide grating," IEEE Trans. Instrum. Meas. 53, 1192-1196 (2003).

D. C. C. Norman, D. J. Webb, R. D. Pechstede, "Extended range interrogation of wavelength division multiplexed fiber Bragg grating sensors using arrayed waveguide grating," Electron. Lett. 39, 1714-1715 (2003).

1999 (1)

K. Okamoto, "Recent progress of integrated optics planar lightwave circuits," Opt. Quantum Electron. 31, 107-129 (1999).

1996 (2)

T. Erdogan, J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Amer. A. 13, 296-313 (1996).

M. K. Smith, C. V. Dan, "PHASAR-based WDM-devices: Principles, design and applications," IEEE J. Sel. Top. Quantum Electron. 2, 236-250 (1996).

Electron. Lett. (1)

D. C. C. Norman, D. J. Webb, R. D. Pechstede, "Extended range interrogation of wavelength division multiplexed fiber Bragg grating sensors using arrayed waveguide grating," Electron. Lett. 39, 1714-1715 (2003).

IEEE J. Sel. Top. Quantum Electron. (1)

M. K. Smith, C. V. Dan, "PHASAR-based WDM-devices: Principles, design and applications," IEEE J. Sel. Top. Quantum Electron. 2, 236-250 (1996).

IEEE Photon. Technol. Lett. (1)

H. Guo, G. Xiao, N. Mrad, J. P. Yao, "Interrogation of a long period grating sensor by a thermally tunable arrayed waveguide grating," IEEE Photon. Technol. Lett. 20, 1790-1792 (2008).

IEEE Trans. Instrum. Meas. (1)

P. Niewczas, A. J. Willshire, L. Dziuda, J. R. McDonald, "Performance analysis of the fiber Bragg grating interrogation system based on an arrayed waveguide grating," IEEE Trans. Instrum. Meas. 53, 1192-1196 (2003).

J. Lightw. Technol. (1)

Y. Sano, T. Yoshino, "Fast optical wavelength interrogator employing arrayed waveguide grating for distributed fiber Bragg grating sensors," J. Lightw. Technol. 21, 132-139 (2003).

J. Opt. Soc. Amer. A. (1)

T. Erdogan, J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Amer. A. 13, 296-313 (1996).

Opt. Lett. (6)

Opt. Quantum Electron. (1)

K. Okamoto, "Recent progress of integrated optics planar lightwave circuits," Opt. Quantum Electron. 31, 107-129 (1999).

Other (2)

P. Cheben, Optical Waveguides: From Theory to Applied Technologies (CRC Press, 2007).

Y. J. Rao, Optical Fiber Sensor Technology (Chapman & Hall, 1998).

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