Abstract

We demonstrate a femtosecond laser microfabricated fiber Mach–Zehnder interferometer and reveal the dependences of the sensitivities of different environmental parameters on the specifications of the interferometer. A 30-mm-long fiber interferometer at a wavelength of 1593nm exhibits a temperature sensitivity of 0.103nm/°C, axial strain sensitivity of 1.35pm/με, and refractive index sensitivity of 15.294nm/RIU, respectively. In addition to dependence on interferometer length, the sensitivities are also strongly dependent on the operation wavelength of the selected interference order. When the operation wavelength is selected at 1525nm, the sensitivities are 0.085nm/°C, 0.09pm/με, and 13.824nm/RIU, respectively.

© 2011 Optical Society of America

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References

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2010 (1)

2009 (3)

P. Lu, L. Men, K. Sooley, and Q. Chen, Appl. Phys. Lett. 94, 131110 (2009).
[CrossRef]

Y. Wang, D. N. Wang, M. Yang, W. Hong, and P. Lu, Opt. Lett. 34, 3328 (2009).
[CrossRef] [PubMed]

J. Canning, J. Sens. 2009, 871580 (2009).

2008 (2)

2007 (1)

2004 (1)

2002 (1)

Bennion, I.

Canning, J.

J. Canning, J. Sens. 2009, 871580 (2009).

Chen, Q.

P. Lu, L. Men, K. Sooley, and Q. Chen, Appl. Phys. Lett. 94, 131110 (2009).
[CrossRef]

Cheng, G. -H.

Deng, M.

Ding, H.

Duan, D. -W.

Grobnic, D.

Han, Y.

Hong, W.

Li, Y.

Liu, S.

Lu, P.

Men, L.

P. Lu, L. Men, K. Sooley, and Q. Chen, Appl. Phys. Lett. 94, 131110 (2009).
[CrossRef]

Mihailov, S. J.

Rao, Y. -J.

Shu, X.

Smelser, C. W.

Sooley, K.

P. Lu, L. Men, K. Sooley, and Q. Chen, Appl. Phys. Lett. 94, 131110 (2009).
[CrossRef]

Tsai, H. -L.

Unruh, J.

van de Hulst, H. C.

H. C. van de Hulst, Light Scattering by Small Particles(Dover, 1981).

Walker, R. B.

Wang, D. N.

Wang, Y.

Wei, T.

Xiao, H.

Yang, M.

Yang, X. -C.

Zhang, L.

Zhu, T.

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Figures (4)

Fig. 1
Fig. 1

Experimental setup of the ultrafast laser micromachining system with a schematic of the fiber interferometer.

Fig. 2
Fig. 2

(a) Attenuation spectra of a fiber with a taper only and of a fiber with an ultrafast laser microfabricated spot only. (b) Attenuation spectra of a 10-mm-long fiber interferometer consisting of a taper and a femtosecond laser microfabricated spot at different environmental conditions (temperature, axial strain, and environmental refractive index).

Fig. 3
Fig. 3

Attenuation spectra of fiber interferometers consisting of a taper and a femtosecond laser microfabricated spot with a spatial separation of (a) 15 mm , (b) 20 mm , (c) 25 mm , and (d) 30 mm , respectively.

Fig. 4
Fig. 4

Dependences of the shifts in the attenuation peak wavelengths of different fiber interferometers on (a) temperature, (b) strain, and (c) refractive index, respectively. (d) Temperature, axial strain, and refractive index sensitivities measured at certain attenuation peak wavelengths.

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