Abstract

A novel fiber optic bend sensor is implemented by using a re-grown tilted fiber Bragg grating (TFBG) written in a small core single mode fiber with UV overexposure. The spectrum of the re-grown TFBG contrasts with that of normal TFBG by exhibiting large differences in the amplitude between neighboring symmetric $({\rm LP}_{0{\rm m}})$ and asymmetric $({\rm LP}_{1{\rm m}})$ cladding mode resonances, moreover each asymmetric cladding mode resonance splits into two peaks (corresponding to two orthogonal polarization states). The differential response of the three individual resonances of such group provides quantitative information about the magnitude and directions of bends in the TFBG. Numerical simulations indicate that the changes in the cladding-mode profiles in a bent fiber are responsible for this behavior through their impact on coupling coefficients. A bend sensitivity of 0.4 dB. m (for the 18th order group of cladding modes) is experimentally demonstrated within a range of 0–10.6 m$^{- 1}$.

© 2010 IEEE

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2010 (3)

L. Y. Shao, J. Albert, "Compact fiber-optic vector inclinometer," Opt. Lett. 35, 1034-1036 (2010).

L. Y. Shao, A. Laronche, M. Smietana, P. Mikulic, W. J. Bock, J. Albert, "Highly sensitive bend sensor with hybrid long-period and tilted fiber Bragg grating," Opt. Commun. 283, 2690-2694 (2010).

L. Y. Shao, Y. Shevchenko, J. Albert, "Intrinsic temperature sensitivity of tilted fiber Bragg grating based surface plasmon resonance sensors," Opt. Exp. 18, 11464-11471 (2010).

2009 (1)

T. Guo, L. Y. Shao, H.-Y. Tam, P. A. Krug, J. Albert, "Tilted fiber grating accelerometer incorporating an abrupt biconical taper for cladding to core recoupling," Opt. Exp. 17, 20651-20660 (2009).

2008 (1)

H.-J. Sheng, W.-F. Liu, K.-R. Lin, S.-S. Bor, M.-Y. Fu, "High-sensitivity temperature-independent differential pressure sensor using fiber Bragg gratings," Opt. Exp. 16, 16013-16018 (2008).

2007 (2)

L. Jin, Z. Wang, Q. Fang, Y. G. Liu, B. Liu, G. Y. Kai, X. Y. Dong, "Spectral characteristics and bend response of Bragg gratings inscribed in all-solid bandgap fibers," Opt. Exp. 15, 15555-15565 (2007).

Z. H. He, Y. N. Zhu, H. Du, "Effect of macro-bending on resonant wavelength and intensity of long-period gratings in photonic crystal fiber," Opt. Exp. 15, 1804-1810 (2007).

2006 (3)

K. H. Smith, B. L. Ipson, T. L. Lowder, A. R. Hawkins, R. H. Selfridge, S. M. Schultz, "Surface-relief fiber Bragg gratings for sensing applications," Appl. Opt. 45, 1669-1675 (2006).

T. Allsop, M. Dubov, A. Martinez, F. Floreani, I. Khrushchev, D. J. Webb, I. Bennion, "Bending characteristics of fiber long-period gratings with cladding index modified by femtosecond laser," J. Lightw. Technol. 24, 3147-3154 (2006).

U. L. Block, M. J. F. Digonnet, M. M. Fejer, V. Dangui, "Bending-induced birefringence of optical fiber cladding modes," J. Lightw. Technol. 24, 2336-2339 (2006).

2004 (2)

A. G. Simpson, K. Kalli, K. Zhou, L. Zhang, I. Bennion, "Formation of type IA fibre Bragg gratings in germanosilicate optical fibre," Electron. Lett. 40, 163-164 (2004).

D. H. Zhao, X. F. Chen, K. M. Zhou, L. Zhang, I. Bennion, W. N. MacPherson, J. S. Barton, J. D. C. Jones, "Bend sensors with direction recognition based on long-period gratings written in D-shaped fiber," Appl. Opt. 43, 5425-5428 (2004).

2003 (1)

2002 (1)

2000 (1)

1997 (1)

Y. J. Rao, "In-fibre Bragg grating sensors," Meas. Sci. Technol. 8, 355-375 (1997).

1996 (1)

T. Erdogan, J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Amer. A 13, 296-313 (1996).

1976 (1)

D. Marcuse, "Field deformation and loss caused by curvature of optical fibers," J. Opt. Soc. Amer. 66, 311-320 (1976).

Appl. Opt. (4)

Electron. Lett. (1)

A. G. Simpson, K. Kalli, K. Zhou, L. Zhang, I. Bennion, "Formation of type IA fibre Bragg gratings in germanosilicate optical fibre," Electron. Lett. 40, 163-164 (2004).

J. Lightw. Technol. (2)

U. L. Block, M. J. F. Digonnet, M. M. Fejer, V. Dangui, "Bending-induced birefringence of optical fiber cladding modes," J. Lightw. Technol. 24, 2336-2339 (2006).

T. Allsop, M. Dubov, A. Martinez, F. Floreani, I. Khrushchev, D. J. Webb, I. Bennion, "Bending characteristics of fiber long-period gratings with cladding index modified by femtosecond laser," J. Lightw. Technol. 24, 3147-3154 (2006).

J. Opt. Soc. Amer. (1)

D. Marcuse, "Field deformation and loss caused by curvature of optical fibers," J. Opt. Soc. Amer. 66, 311-320 (1976).

J. Opt. Soc. Amer. A (1)

T. Erdogan, J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Amer. A 13, 296-313 (1996).

Meas. Sci. Technol. (1)

Y. J. Rao, "In-fibre Bragg grating sensors," Meas. Sci. Technol. 8, 355-375 (1997).

Opt. Commun. (1)

L. Y. Shao, A. Laronche, M. Smietana, P. Mikulic, W. J. Bock, J. Albert, "Highly sensitive bend sensor with hybrid long-period and tilted fiber Bragg grating," Opt. Commun. 283, 2690-2694 (2010).

Opt. Exp. (5)

L. Y. Shao, Y. Shevchenko, J. Albert, "Intrinsic temperature sensitivity of tilted fiber Bragg grating based surface plasmon resonance sensors," Opt. Exp. 18, 11464-11471 (2010).

H.-J. Sheng, W.-F. Liu, K.-R. Lin, S.-S. Bor, M.-Y. Fu, "High-sensitivity temperature-independent differential pressure sensor using fiber Bragg gratings," Opt. Exp. 16, 16013-16018 (2008).

L. Jin, Z. Wang, Q. Fang, Y. G. Liu, B. Liu, G. Y. Kai, X. Y. Dong, "Spectral characteristics and bend response of Bragg gratings inscribed in all-solid bandgap fibers," Opt. Exp. 15, 15555-15565 (2007).

Z. H. He, Y. N. Zhu, H. Du, "Effect of macro-bending on resonant wavelength and intensity of long-period gratings in photonic crystal fiber," Opt. Exp. 15, 1804-1810 (2007).

T. Guo, L. Y. Shao, H.-Y. Tam, P. A. Krug, J. Albert, "Tilted fiber grating accelerometer incorporating an abrupt biconical taper for cladding to core recoupling," Opt. Exp. 17, 20651-20660 (2009).

Opt. Lett. (2)

Other (1)

http://www.lumerical.com/mode_solver_description.php#mode_overview.

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