Comparison between femtosecond laser and fusion-arc inscribed long period gratings in photonic crystal fibre

Allsop, Thomas D.P., Kalli, Kyriacos, Zhou, Kaiming, Smith, Graham, Komodromos, Michael, Sugden, Kate, Dubov, Mykhaylo, Webb, David J. and Bennion, Ian (2009). Comparison between femtosecond laser and fusion-arc inscribed long period gratings in photonic crystal fibre. IN: Photonic Crystal Fibers III. Kalli, Kyriacos (ed.) SPIE proceedings, 7357 . SPIE.


The use of high intensity femtosecond laser sources for inscribing fibre gratings has attained significant interest. The principal advantage of high-energy pulses is their ability for grating inscription in any material type without preprocessing or special core doping. In the field of fibre optical sensing LPGs written in photonic crystal fibre have a distinct advantage of low temperature sensitivity over gratings written in conventional fibre and thus minimal temperature cross-sensitivity. Previous studies have indicated that LPGs written by a point-by-point inscription scheme using a low repetition femtosecond laser exhibit post-fabrication evolution leading to temporal instabilities at room temperatures with respect to spectral location, strength and birefringence of the attenuation bands. These spectral instabilities of LPGs are studied in photonic crystal fibres (endlessly single mode microstructure fibre) to moderately high temperatures 100°C to 200°C and their performance compared to fusion-arc fabricated LPG. Initial results suggest that the fusion-arc fabricated LPG demonstrate less spectral instability for a given constant and moderate temperature, and are similar to the results obtained when inscribed in a standard single mode fibre.

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Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: Copyright 2009 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.
Event Title: Photonic Crystal Fibers III
Event Type: Other
Event Dates: 2009-04-22 - 2009-04-23
Uncontrolled Keywords: cavity resonators,crystal microstructure,crystal whiskers,fiber optic sensors,fibers,lasers,optical fiber fabrication,photonic crystals,pulsed laser applications,single mode fibers,ultrashort pulses,attenuation bands,femtosecond laser,fibre gratings,fusion-arc,high energy pulse,high intensity,long period grating,low temperature sensitivity,moderate temperature,moderately high temperature,optical sensing,photonic crystal fibre,post-fabrication,room temperature,single mode,single mode fibres,temperature cross-sensitivity,temporal instability,Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
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Published Date: 2009-05-06
Authors: Allsop, Thomas D.P.
Kalli, Kyriacos
Zhou, Kaiming ( 0000-0002-6011-1912)
Smith, Graham
Komodromos, Michael
Sugden, Kate ( 0000-0001-6323-1082)
Dubov, Mykhaylo ( 0000-0002-6764-683X)
Webb, David J. ( 0000-0002-5495-1296)
Bennion, Ian


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