Spectral characteristics and thermal evolution of long-period gratings in photonic crystal fibers fabricated with a near-IR radiation femtosecond laser using point-by-point inscription
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Аутори
Allsop, Thomas P.Kalli, Kyriacos
Zhou, Kaiming
Smith, Graham N.
Komodromos, Michael
Petrović, Jovana S.
Webb, David J.
Bennion, Ian
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The spectral properties of long-period gratings (LPGs) fabricated in photonic crystal fibers using femtosecond laser pulses by the point-by-point technique, without oil-immersion of the fiber, are investigated in detail. Postfabrication spectral monitoring at room temperature showed significant long-term instability of the gratings and stable spectra only after 600 h. The stabilized spectral properties of the gratings improved with increasing annealing temperature. The observed changes in resonant wavelength, optical strength, and grating birefringence were correlated to the laser inscription energy and were further used to study the mechanism of femtosecond inscription. Furthermore, the femtosecond-laser inscribed LPGs were compared to electric-arc fabricated LPGs. Comparison of experimental results with theoretical models of LPGs and laser propagation during inscription indicate that the major processes responsible for the index change are permanent compaction and thermally induced s...train, the latter can be significantly changed through annealing. (C) 2011 Optical Society of America
Извор:
Journal of the Optical Society of America. B: Optical Physics, 2011, 28, 9, 2105-2114
DOI: 10.1364/JOSAB.28.002105
ISSN: 0740-3224
WoS: 000294489100008
Scopus: 2-s2.0-80052308092
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VinčaTY - JOUR AU - Allsop, Thomas P. AU - Kalli, Kyriacos AU - Zhou, Kaiming AU - Smith, Graham N. AU - Komodromos, Michael AU - Petrović, Jovana S. AU - Webb, David J. AU - Bennion, Ian PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4469 AB - The spectral properties of long-period gratings (LPGs) fabricated in photonic crystal fibers using femtosecond laser pulses by the point-by-point technique, without oil-immersion of the fiber, are investigated in detail. Postfabrication spectral monitoring at room temperature showed significant long-term instability of the gratings and stable spectra only after 600 h. The stabilized spectral properties of the gratings improved with increasing annealing temperature. The observed changes in resonant wavelength, optical strength, and grating birefringence were correlated to the laser inscription energy and were further used to study the mechanism of femtosecond inscription. Furthermore, the femtosecond-laser inscribed LPGs were compared to electric-arc fabricated LPGs. Comparison of experimental results with theoretical models of LPGs and laser propagation during inscription indicate that the major processes responsible for the index change are permanent compaction and thermally induced strain, the latter can be significantly changed through annealing. (C) 2011 Optical Society of America T2 - Journal of the Optical Society of America. B: Optical Physics T1 - Spectral characteristics and thermal evolution of long-period gratings in photonic crystal fibers fabricated with a near-IR radiation femtosecond laser using point-by-point inscription VL - 28 IS - 9 SP - 2105 EP - 2114 DO - 10.1364/JOSAB.28.002105 ER -
@article{ author = "Allsop, Thomas P. and Kalli, Kyriacos and Zhou, Kaiming and Smith, Graham N. and Komodromos, Michael and Petrović, Jovana S. and Webb, David J. and Bennion, Ian", year = "2011", abstract = "The spectral properties of long-period gratings (LPGs) fabricated in photonic crystal fibers using femtosecond laser pulses by the point-by-point technique, without oil-immersion of the fiber, are investigated in detail. Postfabrication spectral monitoring at room temperature showed significant long-term instability of the gratings and stable spectra only after 600 h. The stabilized spectral properties of the gratings improved with increasing annealing temperature. The observed changes in resonant wavelength, optical strength, and grating birefringence were correlated to the laser inscription energy and were further used to study the mechanism of femtosecond inscription. Furthermore, the femtosecond-laser inscribed LPGs were compared to electric-arc fabricated LPGs. Comparison of experimental results with theoretical models of LPGs and laser propagation during inscription indicate that the major processes responsible for the index change are permanent compaction and thermally induced strain, the latter can be significantly changed through annealing. (C) 2011 Optical Society of America", journal = "Journal of the Optical Society of America. B: Optical Physics", title = "Spectral characteristics and thermal evolution of long-period gratings in photonic crystal fibers fabricated with a near-IR radiation femtosecond laser using point-by-point inscription", volume = "28", number = "9", pages = "2105-2114", doi = "10.1364/JOSAB.28.002105" }
Allsop, T. P., Kalli, K., Zhou, K., Smith, G. N., Komodromos, M., Petrović, J. S., Webb, D. J.,& Bennion, I.. (2011). Spectral characteristics and thermal evolution of long-period gratings in photonic crystal fibers fabricated with a near-IR radiation femtosecond laser using point-by-point inscription. in Journal of the Optical Society of America. B: Optical Physics, 28(9), 2105-2114. https://doi.org/10.1364/JOSAB.28.002105
Allsop TP, Kalli K, Zhou K, Smith GN, Komodromos M, Petrović JS, Webb DJ, Bennion I. Spectral characteristics and thermal evolution of long-period gratings in photonic crystal fibers fabricated with a near-IR radiation femtosecond laser using point-by-point inscription. in Journal of the Optical Society of America. B: Optical Physics. 2011;28(9):2105-2114. doi:10.1364/JOSAB.28.002105 .
Allsop, Thomas P., Kalli, Kyriacos, Zhou, Kaiming, Smith, Graham N., Komodromos, Michael, Petrović, Jovana S., Webb, David J., Bennion, Ian, "Spectral characteristics and thermal evolution of long-period gratings in photonic crystal fibers fabricated with a near-IR radiation femtosecond laser using point-by-point inscription" in Journal of the Optical Society of America. B: Optical Physics, 28, no. 9 (2011):2105-2114, https://doi.org/10.1364/JOSAB.28.002105 . .