Abstract

Frequency-shifted interferometry has shown great potential in optical fiber sensor multiplexing. In this letter, we propose and demonstrate a frequency-shifted interferometer (FSI) based on sideband interference. Comparing with previous implementation of FSI based on a Sagnac interferometer, this scheme is much simpler and compact. By scanning the driving frequency of a LiNbO3 phase modulator in the range of 4.5–5.5 GHz, we demonstrate a spatial resolution of 0.1 m, which is 50 times better than the previously reported results.

© 2013 Optical Society of America

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References

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2013 (1)

2012 (2)

2009 (1)

2008 (1)

F. Ye, L. Qian, Y. Liu, and B. Qi, IEEE Photon. Technol. Lett. 20, 1488 (2008).
[CrossRef]

2007 (1)

2006 (1)

B. Qi, L. Qian, A. Tausz, and H.-K. Lo, IEEE Photon. Technol. Lett. 18, 295 (2006).
[CrossRef]

2004 (2)

J. Zheng, Appl. Opt. 43, 4189 (2004).
[CrossRef]

H. N. Li, D. S. Li, and G. B. Song, Eng. Struct. 26, 1647 (2004).
[CrossRef]

2000 (1)

A. D. Kersey, IEICE Trans. Electron. E83-C, 400 (2000).

1999 (1)

P. K. C. Chan, W. Jin, J. M. Gong, and M. S. Demokan, IEEE Photon. Technol. Lett. 11, 1470 (1999).
[CrossRef]

1993 (1)

Austin, E.

Berkoff, T. A.

Chan, P. K. C.

P. K. C. Chan, W. Jin, J. M. Gong, and M. S. Demokan, IEEE Photon. Technol. Lett. 11, 1470 (1999).
[CrossRef]

Crickmore, R. I.

Demokan, M. S.

P. K. C. Chan, W. Jin, J. M. Gong, and M. S. Demokan, IEEE Photon. Technol. Lett. 11, 1470 (1999).
[CrossRef]

Dong, B.

Gong, J.

Gong, J. M.

P. K. C. Chan, W. Jin, J. M. Gong, and M. S. Demokan, IEEE Photon. Technol. Lett. 11, 1470 (1999).
[CrossRef]

Jin, W.

P. K. C. Chan, W. Jin, J. M. Gong, and M. S. Demokan, IEEE Photon. Technol. Lett. 11, 1470 (1999).
[CrossRef]

Kersey, A. D.

A. D. Kersey, IEICE Trans. Electron. E83-C, 400 (2000).

A. D. Kersey, T. A. Berkoff, and W. W. Morey, Opt. Lett. 18, 1370 (1993).
[CrossRef]

Kingsley, S. A.

Li, D. S.

H. N. Li, D. S. Li, and G. B. Song, Eng. Struct. 26, 1647 (2004).
[CrossRef]

Li, H. N.

H. N. Li, D. S. Li, and G. B. Song, Eng. Struct. 26, 1647 (2004).
[CrossRef]

Li, X.

Liang, R.

Liao, Y.

Liu, D.

Liu, Y.

F. Ye, L. Qian, Y. Liu, and B. Qi, IEEE Photon. Technol. Lett. 20, 1488 (2008).
[CrossRef]

Lo, H.-K.

B. Qi, L. Qian, A. Tausz, and H.-K. Lo, IEEE Photon. Technol. Lett. 18, 295 (2006).
[CrossRef]

Morey, W. W.

Nash, P. J.

Qi, B.

F. Ye, L. Qian, and B. Qi, J. Lightwave Technol. 27, 5356 (2009).
[CrossRef]

F. Ye, L. Qian, Y. Liu, and B. Qi, IEEE Photon. Technol. Lett. 20, 1488 (2008).
[CrossRef]

B. Qi, L. Qian, A. Tausz, and H.-K. Lo, IEEE Photon. Technol. Lett. 18, 295 (2006).
[CrossRef]

Qian, L.

F. Ye, L. Qian, and B. Qi, J. Lightwave Technol. 27, 5356 (2009).
[CrossRef]

F. Ye, L. Qian, Y. Liu, and B. Qi, IEEE Photon. Technol. Lett. 20, 1488 (2008).
[CrossRef]

B. Qi, L. Qian, A. Tausz, and H.-K. Lo, IEEE Photon. Technol. Lett. 18, 295 (2006).
[CrossRef]

Richardson, D. J.

Shillig, T. J.

Shum, P. P.

Song, G. B.

H. N. Li, D. S. Li, and G. B. Song, Eng. Struct. 26, 1647 (2004).
[CrossRef]

Sun, Q.

Tausz, A.

B. Qi, L. Qian, A. Tausz, and H.-K. Lo, IEEE Photon. Technol. Lett. 18, 295 (2006).
[CrossRef]

Wang, A.

Wang, D. Y.

Wang, Y.

Wo, J.

Wooler, J. P. F.

Ye, F.

F. Ye, L. Qian, and B. Qi, J. Lightwave Technol. 27, 5356 (2009).
[CrossRef]

F. Ye, L. Qian, Y. Liu, and B. Qi, IEEE Photon. Technol. Lett. 20, 1488 (2008).
[CrossRef]

Zhang, J.

Zheng, J.

Appl. Opt. (2)

Eng. Struct. (1)

H. N. Li, D. S. Li, and G. B. Song, Eng. Struct. 26, 1647 (2004).
[CrossRef]

IEEE Photon. Technol. Lett. (3)

P. K. C. Chan, W. Jin, J. M. Gong, and M. S. Demokan, IEEE Photon. Technol. Lett. 11, 1470 (1999).
[CrossRef]

B. Qi, L. Qian, A. Tausz, and H.-K. Lo, IEEE Photon. Technol. Lett. 18, 295 (2006).
[CrossRef]

F. Ye, L. Qian, Y. Liu, and B. Qi, IEEE Photon. Technol. Lett. 20, 1488 (2008).
[CrossRef]

IEICE Trans. Electron. (1)

A. D. Kersey, IEICE Trans. Electron. E83-C, 400 (2000).

J. Lightwave Technol. (3)

Opt. Express (1)

Opt. Lett. (1)

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Figures (3)

Fig. 1.
Fig. 1.

Basic structure of an FSI based on sideband interference. LS, light source; Cir, optical circulator; PC, polarization controller; PM, phase modulator; BP, optical bandpass filter; PD, photodetector; Gen, RF signal generator.

Fig. 2.
Fig. 2.

Observed interference signal as the driving frequency of the PM was scanned in the range from 4.5 to 5.5 GHz.

Fig. 3.
Fig. 3.

FFT of the interference signal shown in Fig. 2. The bottom figure is a zoomed-in view of the upper one. Reflection signals from 4 FBGs and the free fiber end-face are clearly resolvable.

Equations (2)

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I(f)DC+iRicos(4πnLicf),
δL=c2nΔ.

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