Abstract

A spatial optical filter based on splice misalignment between optical fibers with different diameters is proposed for gas refractometry. The sensing head is formed by a 2 mm long optical fiber with 50 μm diameter that is spliced with a strong misalignment between two single-mode fibers (SMF28) and interrogated in transmission. The misalignment causes a Fabry–Perot behavior along the reduced-size fiber and depending on the lead-out SMF28 position, it is possible to obtain different spectral responses, namely, bandpass or band-rejection filters. It is shown that the spatial filter device is highly sensitive to refractive index changes on a nitrogen environment by means of the gas pressure variation. A maximum sensitivity of 1390nm/RIU for the bandpass filter was achieved. Both devices have shown similar temperature responses with an average sensitivity of 25.7pm/°C.

© 2012 Optical Society of America

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References

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2012 (1)

2011 (2)

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

2008 (1)

2007 (2)

1988 (1)

C. E. Lee and H. F. Taylor, Electron. Lett. 24, 193 (1988).
[CrossRef]

1983 (1)

A. D. Kersey, D. A. Jackson, and M. Corke, Opt. Commun. 45, 71 (1983).
[CrossRef]

1971 (1)

Bradley, C. C.

Corke, M.

A. D. Kersey, D. A. Jackson, and M. Corke, Opt. Commun. 45, 71 (1983).
[CrossRef]

Deng, H. Y.

Duan, D. W.

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

Y. J. Rao, T. Zhu, X. C. Yang, and D. W. Duan, Opt. Lett. 32, 2662 (2007).
[CrossRef]

Duan, W.

Gebbie, H. A.

Han, Y.

Jackson, D. A.

A. D. Kersey, D. A. Jackson, and M. Corke, Opt. Commun. 45, 71 (1983).
[CrossRef]

Kersey, A. D.

A. D. Kersey, D. A. Jackson, and M. Corke, Opt. Commun. 45, 71 (1983).
[CrossRef]

Lee, C. E.

C. E. Lee and H. F. Taylor, Electron. Lett. 24, 193 (1988).
[CrossRef]

Li, Y.

Liao, X.

Ran, Z. L.

Rao, Y.

Rao, Y. J.

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

Y. J. Rao, T. Zhu, X. C. Yang, and D. W. Duan, Opt. Lett. 32, 2662 (2007).
[CrossRef]

Z. L. Ran, Y. J. Rao, H. Y. Deng, and X. Liao, Opt. Lett. 32, 3071 (2007).
[CrossRef]

Taylor, H. F.

C. E. Lee and H. F. Taylor, Electron. Lett. 24, 193 (1988).
[CrossRef]

Tsai, H. L.

Wei, T.

Wen, W. P.

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

Wu, D.

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

Xiao, H.

Xu, L. C.

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

Yang, X. C.

Yao, J.

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

Zhu, T.

W. Duan, Y. Rao, and T. Zhu, J. Opt. Soc. Am. B 29, 912 (2012).
[CrossRef]

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

Y. J. Rao, T. Zhu, X. C. Yang, and D. W. Duan, Opt. Lett. 32, 2662 (2007).
[CrossRef]

Appl. Opt. (1)

Electron. Lett. (2)

C. E. Lee and H. F. Taylor, Electron. Lett. 24, 193 (1988).
[CrossRef]

D. W. Duan, Y. J. Rao, W. P. Wen, J. Yao, D. Wu, L. C. Xu, and T. Zhu, Electron. Lett. 47, 401 (2011).
[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Commun. (1)

A. D. Kersey, D. A. Jackson, and M. Corke, Opt. Commun. 45, 71 (1983).
[CrossRef]

Opt. Express (1)

Opt. Lett. (2)

Sens. Actuatuators B (1)

D. W. Duan, Y. J. Rao, L. C. Xu, T. Zhu, D. Wu, and J. Yao, Sens. Actuatuators B 160, 1198 (2011).
[CrossRef]

Supplementary Material (1)

» Media 1: MOV (1144 KB)     

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Figures (5)

Fig. 1.
Fig. 1.

(a) Schematic and (b) photo of the sensing head; (c) optical spectrum of the band-rejection filter.

Fig. 2.
Fig. 2.

(a) Schematic and (b) photo of the sensing head; (c) optical spectrum of the bandpass filter.

Fig. 3.
Fig. 3.

Media 1: Intensity distribution of electric field on the (a) xz plane and the (b)–(e) xy plane at different fiber lengths.

Fig. 4.
Fig. 4.

Wavelength shift versus refractive index variation of nitrogen for the (open circle) band-rejection and (solid circle) bandpass optical filters.

Fig. 5.
Fig. 5.

Wavelength shift versus temperature variation for the (open circle) band-rejection and (solid circle) bandpass optical filters.

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