Abstract
The use of near infrared, high intensity femtosecond laser pulses for the inscription of long period fiber gratings in photonic crystal fiber is reported. The formation of grating structures in photonic crystal fiber is complicated by the fiber structure that allows wave-guidance but that impairs and scatters the femtosecond inscription beam. The effects of symmetric and asymmetric femtosecond laser inscriptions are compared and the polarization characteristics of long period gratings and their responses to external perturbations are reported.
References
A. Vengsarkar, P. J. Lemaire, J. B. Judkins, V. Bhatia, T. Erdogan, and J. E. Sipe, “Long period gratings as band-rejection filters,” J. Lightwave Tech., vol. 14, no. 1, pp. 58–64, 1996.
V. Bhatia, “Applications of long-period gratings to single and multi-parameter sensing,” Opt. Exp., vol. 4, no. 11, pp. 457–466, 1999.
T. Erdogan, “Fiber grating spectra,” J. Lightwave Tech., vol. 15, no. 8, pp. 1277–1294, 1997.
X. Shu, L. Zhang, and I. Bennion, “Sensitivity characteristics of long-period fiber gratings,” J. Lightwave Tech., vol. 20, no. 2, pp. 255–266, 2002.
H. Patrick, A. Kersey, and F. Bucholtz, “Analysis of the response of long period fiber gratings to external index of refraction,” J. Lightwave Tech., vol. 16, no. 9, pp. 1606–1612, 1998.
T. Erdogan, “Cladding-mode resonances in short- and long-period fiber grating filters,” J. Opt. Soc. Am. A, vol. 14, no. 8, pp. 1760–1773, 1997.
H. Dobb, K. Kalli, and D. J. Webb, “Temperature insensitive long period grating sensors in photonic crystal fibre,” Elec. Lett., vol. 40, no. 11, pp. 657–658, 2004.
H. Dobb, K. Kalli, and D. J. Webb, “Measured sensitivity of arc-induced long-period grating sensors in photonic crystal fibre,” Opt. Comm., vol. 260, no. 1, pp. 184–191, 2006.
A. Martinez, M. Dubov, I. Khrushchev, and I. Bennion, “Point by point FBG inscription by a focused NIR femtosecond laser,” presented at OSA Conf. Proc. CLEO/IQEC and PhAST, Washington, 2004.
Y. Kondo, K. Nouchi, T. Mitsuyu, M. Watanabe, P. G. Kazanslky, and K. Hirao, “Fabrication of long-period fiber gratings by focused irradiation of infrared femtosecond laser pulse,” Opt. Lett., vol. 24, no. 10, pp. 646–648, 1999.
A. A. Fotiadi, G. Brambilla, T. Ernst, S. A. Slattery, and D. N. Nikogosyan, “TPA-induced long-period gratings in a photonic crystal fiber: inscription and temperature sensing properties,” J. Opt. Soc. Am. B, vol. 24, no. 7, pp. 1475–1481, 2007.
T. Allsop, H. Dobb, A. Main, A. Martinez, M. Dubov, K. Kalli, D. J. Webb, and I. Bennion, “Comparison of the spectral properties of high temperature annealed long period gratings inscribed by fs laser, UV, and fusion arc,” Proc. SPIE, vol. 6193, pp. 61930M, 2006.
J. Petrovic H. Dobb, V. Mezentsev, K. Kalli, D. J. Webb, and I. Bennion, “Sensitivity of LPGs in PCFs fabricated by an electric arc to temperature, strain, and external refractive index,” J. Lightwave Tech., vol. 25, no. 5, pp. 1306–1312, 2007.
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Kalli, K., Allsop, T., Zhou, K. et al. Sensing properties of femtosecond laser-inscribed long period gratings in photonic crystal fiber. Photonic Sens 1, 228–233 (2011). https://doi.org/10.1007/s13320-011-0013-8
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DOI: https://doi.org/10.1007/s13320-011-0013-8
Keywords
- Fiber gratings
- femtosecond laser inscription
- photonic crystal fiber