Abstract

The operation of a fiber Bragg grating strain sensor system that uses interferometric determination of strain-induced wavelength shifts and incorporates a reference channel to compensate for random thermal-induced drift in the output is described. This system is shown to be capable of resolving sub-μstrain changes in the quasi-static strain applied to a grating and has a resolution of ~6 × 10−3 μstrain/Hz at a strain perturbation frequency of 1 Hz.

© 1993 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. G. Meltz, W. W. Morey, W. H. Glenn, Opt. Lett. 14, 823 (1989).
    [CrossRef] [PubMed]
  2. W. W. Morey, in Proceedings of the Seventh Optical Fiber Sensors Conference, S. Rashleigh, ed. (Institution of Radio and Electronics Engineers of Australia, Sydney, Australia, 1990), p. 285.
  3. W. W. Morey, J. R. Dunphy, G. Meltz, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 216 (1991).
  4. A. D. Kersey, T. A. Berkoff, W. W. Morey, Electron. Lett. 28, 236 (1992).
    [CrossRef]
  5. D. A. Jackson, A. D. Kersey, M. Corke, Electron. Lett. 18, 1081 (1982).
    [CrossRef]

1992 (1)

A. D. Kersey, T. A. Berkoff, W. W. Morey, Electron. Lett. 28, 236 (1992).
[CrossRef]

1991 (1)

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

1989 (1)

1982 (1)

D. A. Jackson, A. D. Kersey, M. Corke, Electron. Lett. 18, 1081 (1982).
[CrossRef]

Berkoff, T. A.

A. D. Kersey, T. A. Berkoff, W. W. Morey, Electron. Lett. 28, 236 (1992).
[CrossRef]

Corke, M.

D. A. Jackson, A. D. Kersey, M. Corke, Electron. Lett. 18, 1081 (1982).
[CrossRef]

Dunphy, J. R.

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

Glenn, W. H.

Jackson, D. A.

D. A. Jackson, A. D. Kersey, M. Corke, Electron. Lett. 18, 1081 (1982).
[CrossRef]

Kersey, A. D.

A. D. Kersey, T. A. Berkoff, W. W. Morey, Electron. Lett. 28, 236 (1992).
[CrossRef]

D. A. Jackson, A. D. Kersey, M. Corke, Electron. Lett. 18, 1081 (1982).
[CrossRef]

Meltz, G.

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

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

Morey, W. W.

A. D. Kersey, T. A. Berkoff, W. W. Morey, Electron. Lett. 28, 236 (1992).
[CrossRef]

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

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

W. W. Morey, in Proceedings of the Seventh Optical Fiber Sensors Conference, S. Rashleigh, ed. (Institution of Radio and Electronics Engineers of Australia, Sydney, Australia, 1990), p. 285.

Electron. Lett. (2)

A. D. Kersey, T. A. Berkoff, W. W. Morey, Electron. Lett. 28, 236 (1992).
[CrossRef]

D. A. Jackson, A. D. Kersey, M. Corke, Electron. Lett. 18, 1081 (1982).
[CrossRef]

Opt. Lett. (1)

Proc. Soc. Photo-Opt. Instrum. Eng. (1)

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

Other (1)

W. W. Morey, in Proceedings of the Seventh Optical Fiber Sensors Conference, S. Rashleigh, ed. (Institution of Radio and Electronics Engineers of Australia, Sydney, Australia, 1990), p. 285.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1
Fig. 1

Compensated Bragg-grating sensor system with sensing and reference grating elements and interferometric wavelength-shift detection.

Fig. 2
Fig. 2

(a) Mach–Zehnder interference output signals obtained at the sensor and reference outputs with the interferometer driven with a 2π phase-shift signal, (b) Phase comparison of the outputs in (a).

Fig. 3
Fig. 3

Output response to a test strain perturbation of 3 μstrain peak to peak: (a) Direct sensor carrier phase shift (uncompensated mode); (b) sensor-reference phase difference (drift-compensated mode). FS, full scale.

Fig. 4
Fig. 4

Low-frequency power spectrum of the phase-difference output with an applied 1-μstrain rms test strain perturbation at 1 Hz. (The components at 2 and 3 Hz arise because of harmonic distortion in the drive signal and mechanical arrangement.)

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

I s ( λ s ) = A s { 1 + k cos [ ψ s ( λ s ) + ϕ ( t ) ] } ,
I r ( λ r ) = A r { 1 + k cos [ ψ r ( λ r ) + ϕ ( t ) ] } ,
δ ψ s = 2 π n d λ s 2 δ λ s = 2 π n d λ s ξ δ ,
ξ = 1 λ s δ λ δ ,
δ ψ s δ = 1 . 35 × 10 2 rad / μ strain .
S r = η k A r cos [ ω t + ψ ( λ r ) + ϕ ( t ) ] ,
S s = η k A s cos [ ω t + ψ ( λ s ) + ϕ ( t ) ] ,

Metrics