Femtosecond laser inscribed superstructure fibre gratings

K. Kalli, C. Koutsides, E. Davies, Michael Komodromos, David J. Webb, Lin Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate the development of femtosecond laser inscribed superstructure fiber gratings (fsSFG) in silica optical fibre. We utilise a single step process, to inscribe low loss and polarisation independent, sampled gratings in optical fibres using the point by point femtosecond laser inscription method. Our approach results in a controlled modulated index change with complete suppression of any overlapping LPG structure leading to highly symmetric superstructure spectra, with the grating reflection well within the Fourier design limit. We also solve Maxwell's equations and calculate the back reflection spectrum using the bidirectional beam propagation method (BiBPM). Experimental results validate our numerical analysis and the estimation of inscription parameters such as ac index modulation, wavelength and the relative peak strength. We also explore how changes in the grating's period influence the reflection spectrum.
Original languageEnglish
Title of host publication21st International Conference on Optical Fiber Sensors
EditorsWojtek J. Bock, Jacques Albert, Xiaoyi Bao
Place of PublicationBellingham, WA (US)
PublisherSPIE
Number of pages4
ISBN (Print)978-0-8194-8246-4
DOIs
Publication statusPublished - 17 May 2011
Event21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada
Duration: 15 May 201119 May 2011
http://www.ofs21.org/

Publication series

NameSPIE Proceedings
PublisherSPIE
Volume7753
ISSN (Print)0277-786X
ISSN (Electronic)2410-9045

Conference

Conference21st International Conference on Optical Fiber Sensors
Abbreviated titleOFS21
CountryCanada
CityOttawa, ON
Period15/05/1119/05/11
Internet address

Fingerprint

Femtosecond Laser
Fiber Grating
Ultrashort pulses
Gratings
gratings
Optical Fiber
fibers
Fibers
Optical fibers
Inscribe
Penicillin G Benzathine
lasers
Beam propagation method
Beam Propagation
optical fibers
Liquefied petroleum gas
Maxwell equations
Silica
Maxwell's equations
Silicon Dioxide

Bibliographical note

K. Kalli, C. Koutsides, E. Davies, M. Komodromos, D. J. Webb and L. Zhang, "Femtosecond laser inscribed superstructure fibre gratings", Proc. SPIE 7753, 775393 (2011). 21st International Conference on Optical Fiber Sensors (OFS21), 15-19 May 2011, Ottawa (CA).

Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

DOI: http://dx.doi.org/10.1117/12.885994

Keywords

  • femtosecond laser inscribed superstructure fiber gratings
  • fsSFG
  • silica optical fibre
  • single step process
  • low loss
  • polarisation independent
  • sampled gratings
  • optical fibres
  • point by point femtosecond laser inscription method
  • controlled modulated index change
  • suppression
  • symmetric superstructure spectra
  • grating reflection
  • Fourier design limit
  • Maxwell's equations
  • back reflection spectrum
  • bidirectional beam propagation method
  • BiBPM
  • ac index modulation
  • wavelength
  • peak strength

Cite this

Kalli, K., Koutsides, C., Davies, E., Komodromos, M., Webb, D. J., & Zhang, L. (2011). Femtosecond laser inscribed superstructure fibre gratings. In W. J. Bock, J. Albert, & X. Bao (Eds.), 21st International Conference on Optical Fiber Sensors [775393] (SPIE Proceedings; Vol. 7753). Bellingham, WA (US): SPIE. https://doi.org/10.1117/12.885994
Kalli, K. ; Koutsides, C. ; Davies, E. ; Komodromos, Michael ; Webb, David J. ; Zhang, Lin. / Femtosecond laser inscribed superstructure fibre gratings. 21st International Conference on Optical Fiber Sensors. editor / Wojtek J. Bock ; Jacques Albert ; Xiaoyi Bao. Bellingham, WA (US) : SPIE, 2011. (SPIE Proceedings).
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Kalli, K, Koutsides, C, Davies, E, Komodromos, M, Webb, DJ & Zhang, L 2011, Femtosecond laser inscribed superstructure fibre gratings. in WJ Bock, J Albert & X Bao (eds), 21st International Conference on Optical Fiber Sensors., 775393, SPIE Proceedings, vol. 7753, SPIE, Bellingham, WA (US), 21st International Conference on Optical Fiber Sensors, Ottawa, ON, Canada, 15/05/11. https://doi.org/10.1117/12.885994

Femtosecond laser inscribed superstructure fibre gratings. / Kalli, K.; Koutsides, C.; Davies, E.; Komodromos, Michael; Webb, David J.; Zhang, Lin.

21st International Conference on Optical Fiber Sensors. ed. / Wojtek J. Bock; Jacques Albert; Xiaoyi Bao. Bellingham, WA (US) : SPIE, 2011. 775393 (SPIE Proceedings; Vol. 7753).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N1 - K. Kalli, C. Koutsides, E. Davies, M. Komodromos, D. J. Webb and L. Zhang, "Femtosecond laser inscribed superstructure fibre gratings", Proc. SPIE 7753, 775393 (2011). 21st International Conference on Optical Fiber Sensors (OFS21), 15-19 May 2011, Ottawa (CA). Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI: http://dx.doi.org/10.1117/12.885994

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N2 - We demonstrate the development of femtosecond laser inscribed superstructure fiber gratings (fsSFG) in silica optical fibre. We utilise a single step process, to inscribe low loss and polarisation independent, sampled gratings in optical fibres using the point by point femtosecond laser inscription method. Our approach results in a controlled modulated index change with complete suppression of any overlapping LPG structure leading to highly symmetric superstructure spectra, with the grating reflection well within the Fourier design limit. We also solve Maxwell's equations and calculate the back reflection spectrum using the bidirectional beam propagation method (BiBPM). Experimental results validate our numerical analysis and the estimation of inscription parameters such as ac index modulation, wavelength and the relative peak strength. We also explore how changes in the grating's period influence the reflection spectrum.

AB - We demonstrate the development of femtosecond laser inscribed superstructure fiber gratings (fsSFG) in silica optical fibre. We utilise a single step process, to inscribe low loss and polarisation independent, sampled gratings in optical fibres using the point by point femtosecond laser inscription method. Our approach results in a controlled modulated index change with complete suppression of any overlapping LPG structure leading to highly symmetric superstructure spectra, with the grating reflection well within the Fourier design limit. We also solve Maxwell's equations and calculate the back reflection spectrum using the bidirectional beam propagation method (BiBPM). Experimental results validate our numerical analysis and the estimation of inscription parameters such as ac index modulation, wavelength and the relative peak strength. We also explore how changes in the grating's period influence the reflection spectrum.

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KW - polarisation independent

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KW - point by point femtosecond laser inscription method

KW - controlled modulated index change

KW - suppression

KW - symmetric superstructure spectra

KW - grating reflection

KW - Fourier design limit

KW - Maxwell's equations

KW - back reflection spectrum

KW - bidirectional beam propagation method

KW - BiBPM

KW - ac index modulation

KW - wavelength

KW - peak strength

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Kalli K, Koutsides C, Davies E, Komodromos M, Webb DJ, Zhang L. Femtosecond laser inscribed superstructure fibre gratings. In Bock WJ, Albert J, Bao X, editors, 21st International Conference on Optical Fiber Sensors. Bellingham, WA (US): SPIE. 2011. 775393. (SPIE Proceedings). https://doi.org/10.1117/12.885994