Abstract

A new approach for the interrogation of a large number of fiber-optic grating sensors is proposed and demonstrated for a small number of sensors in which signal recovery is achieved by matching a receiving grating to its corresponding sensor. This technique is demonstrated for both quasi-static and periodic measurands, and the resolution achieved for a single sensor–receiving grating pair for quasi-static strain is 4.12 μ∊.

© 1993 Optical Society of America

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References

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  1. G. Meltz, W. W. Morey, W. H. Glenn, Opt. Lett. 14, 823 (1989).
    [CrossRef] [PubMed]
  2. W. W. Morey, G. Meltz, W. H. Glenn, Proc. Soc. Photo-Opt. Instrum. Eng. 1169, 98 (1989).
  3. J. R. Dunphy, G. Meltz, F. P. Lamm, W. W. Morey, Proc. Soc. Photo-Opt. Instrum. Eng. 1370, 116 (1990).
  4. W. W. Morey, in Proceedings of Seventh Optical Fiber Sensors Conference (Institution of Radio and Electronics Engineers Australia, Sydney, Australia, 1990), pp. 285–288.
  5. W. W. Morey, J. R. Dunphy, G. Meltz, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 216 (1991).
  6. A. D. Kersey, T. A. Berkoff, W. W. Morey, in Proceedings of First European Conference on Smart Structures and Materials (Society of Photo-Optical Instrumentation Engineers, Bellingham, Wash., 1992), pp. 61–67.

1991 (1)

W. W. Morey, J. R. Dunphy, G. Meltz, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 216 (1991).

1990 (1)

J. R. Dunphy, G. Meltz, F. P. Lamm, W. W. Morey, Proc. Soc. Photo-Opt. Instrum. Eng. 1370, 116 (1990).

1989 (2)

W. W. Morey, G. Meltz, W. H. Glenn, Proc. Soc. Photo-Opt. Instrum. Eng. 1169, 98 (1989).

G. Meltz, W. W. Morey, W. H. Glenn, Opt. Lett. 14, 823 (1989).
[CrossRef] [PubMed]

Berkoff, T. A.

A. D. Kersey, T. A. Berkoff, W. W. Morey, in Proceedings of First European Conference on Smart Structures and Materials (Society of Photo-Optical Instrumentation Engineers, Bellingham, Wash., 1992), pp. 61–67.

Dunphy, J. R.

W. W. Morey, J. R. Dunphy, G. Meltz, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 216 (1991).

J. R. Dunphy, G. Meltz, F. P. Lamm, W. W. Morey, Proc. Soc. Photo-Opt. Instrum. Eng. 1370, 116 (1990).

Glenn, W. H.

W. W. Morey, G. Meltz, W. H. Glenn, Proc. Soc. Photo-Opt. Instrum. Eng. 1169, 98 (1989).

G. Meltz, W. W. Morey, W. H. Glenn, Opt. Lett. 14, 823 (1989).
[CrossRef] [PubMed]

Kersey, A. D.

A. D. Kersey, T. A. Berkoff, W. W. Morey, in Proceedings of First European Conference on Smart Structures and Materials (Society of Photo-Optical Instrumentation Engineers, Bellingham, Wash., 1992), pp. 61–67.

Lamm, F. P.

J. R. Dunphy, G. Meltz, F. P. Lamm, W. W. Morey, Proc. Soc. Photo-Opt. Instrum. Eng. 1370, 116 (1990).

Meltz, G.

W. W. Morey, J. R. Dunphy, G. Meltz, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 216 (1991).

J. R. Dunphy, G. Meltz, F. P. Lamm, W. W. Morey, Proc. Soc. Photo-Opt. Instrum. Eng. 1370, 116 (1990).

W. W. Morey, G. Meltz, W. H. Glenn, Proc. Soc. Photo-Opt. Instrum. Eng. 1169, 98 (1989).

G. Meltz, W. W. Morey, W. H. Glenn, Opt. Lett. 14, 823 (1989).
[CrossRef] [PubMed]

Morey, W. W.

W. W. Morey, J. R. Dunphy, G. Meltz, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 216 (1991).

J. R. Dunphy, G. Meltz, F. P. Lamm, W. W. Morey, Proc. Soc. Photo-Opt. Instrum. Eng. 1370, 116 (1990).

W. W. Morey, G. Meltz, W. H. Glenn, Proc. Soc. Photo-Opt. Instrum. Eng. 1169, 98 (1989).

G. Meltz, W. W. Morey, W. H. Glenn, Opt. Lett. 14, 823 (1989).
[CrossRef] [PubMed]

A. D. Kersey, T. A. Berkoff, W. W. Morey, in Proceedings of First European Conference on Smart Structures and Materials (Society of Photo-Optical Instrumentation Engineers, Bellingham, Wash., 1992), pp. 61–67.

W. W. Morey, in Proceedings of Seventh Optical Fiber Sensors Conference (Institution of Radio and Electronics Engineers Australia, Sydney, Australia, 1990), pp. 285–288.

Opt. Lett. (1)

Proc. Soc. Photo-Opt. Instrum. Eng. (3)

W. W. Morey, G. Meltz, W. H. Glenn, Proc. Soc. Photo-Opt. Instrum. Eng. 1169, 98 (1989).

J. R. Dunphy, G. Meltz, F. P. Lamm, W. W. Morey, Proc. Soc. Photo-Opt. Instrum. Eng. 1370, 116 (1990).

W. W. Morey, J. R. Dunphy, G. Meltz, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 216 (1991).

Other (2)

A. D. Kersey, T. A. Berkoff, W. W. Morey, in Proceedings of First European Conference on Smart Structures and Materials (Society of Photo-Optical Instrumentation Engineers, Bellingham, Wash., 1992), pp. 61–67.

W. W. Morey, in Proceedings of Seventh Optical Fiber Sensors Conference (Institution of Radio and Electronics Engineers Australia, Sydney, Australia, 1990), pp. 285–288.

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Figures (7)

Fig. 1
Fig. 1

Basic concept of the sensor–receiving grating pair.

Fig. 2
Fig. 2

Expansion of the arrangement shown in Fig. 1 to permit multiplexing of a large number of grating sensors. The number of sensors can be increased by incorporating additional sensing fibers with time-division multiplexing (TDM) (the source is then pulsed).

Fig. 3
Fig. 3

Experimental system with two sensor–receiving grating pairs.

Fig. 4
Fig. 4

Normalized transmission spectra of the grating pair G1 (top trace for G1S, bottom trace for G1R).

Fig. 5
Fig. 5

Output spectra recorded as PZTR is linearly swept when sensors G2S (top trace) and G2S (bottom trace) are driven at 85 and 62 Hz, respectively,

Fig. 6
Fig. 6

Variation of matching voltage PZTR as a function of the driving voltage applied to sensor G1S.

Fig. 7
Fig. 7

Output spectrum from detector D1 when the sensor G1S is subject to periodic strain (the intensity of the source is modulated at 1 kHz).

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