Results 181 to 190 of about 378,310 (219)
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Regenerated femtosecond fibre Bragg gratings
SPIE Proceedings, 2012We demonstrate the thermal regeneration of fibre Bragg gratings inscribed by direct writing using a femtosecond, infrared laser into standard SMF-28 and pure silica core fibres. Post-H2 loading was used. The regeneration process is shown to extend the temperature operation of these gratings up to 1200°C.
K. Cook +5 more
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Dispersion-free fibre Bragg gratings
OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001Fibre Bragg gratings with reduced/eliminated in-band dispersion are presented. When tested in add-drop configurations at 10 Gbit/s both 25 GHz and 50 GHz bandwidth gratings are shown to exhibit superior performance with no dispersion-induced penalties in the stopband.
Morten Ibsen +3 more
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Adding functionality to fibre Bragg gratings
Proceedings of LEOS'94, 2002Until recently, research on optical fibre Bragg gratings has focused mainly on optimizing the fabrication of "plain" gratings, i.e. gratings with uniform amplitude and period. Grating lengths have also been limited by the size and shape of the writing beam, precluding fabrication of more complex structures. It is possible, however, to use more advanced
F. Ouellette +5 more
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Photosensitisation of Phosphosilicate Fibre Bragg Gratings
Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications, 1995Photolytic grating writing in phosphorous doped waveguides has recently been possible only with substantial hydrogen loading [1-3]. In [1] this has been demonstrated for phosphosilicate planar waveguides using 193nm whilst for aluminophosphosilicate fibres the writing wavelength was the 248nm KrF line [2]. We have recently demonstrated photosensitivity
J. Canning, R. Pasman, M.G. Sceats
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Packaging of optical Fibre Bragg Gratings
2001 Proceedings. 51st Electronic Components and Technology Conference (Cat. No.01CH37220), 2002Fibre Bragg Gratings (FBGs) are all-fibre optical filters with applications in sensing and telecommunication systems. The packaging of FBGs offers many challenges to the manufacturer as stringent tolerances for wavelength stability of the filter over widely varying environmental operating conditions are required for state of the art Dense Wavelength ...
D.C. Psaila, H.G. Inglis
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Dynamic studies of fibre Bragg gratings
SPIE Proceedings, 2010The dynamic performance of standard fibre Bragg gratings (FBGs) is assessed. The interrogating system used for all the reported measurements was an all fibre optic Mach Zehnder interferometer which generated a fade free optical carrier to enable heterodyne processing to be exploited.
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Thermal decay of fibre Bragg gratings
11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97, 1997The thermal decay of fibre Bragg gratings is examined over a period in excess of 5000 hours. A new model is presented to predict the decay characteristics of gratings written in hydrogen loaded fibre.
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Polymer optical fibre Bragg gratings
Advanced Photonics Congress, 2012This paper provides a review of the current state of research and development into polymer fibre Bragg gratings, along with a description of some current challenges.
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Fibre Bragg Grating Components (WG4)
1999The COST 246 Working group WG4 “Bragg grating components” investigated the reliability of a new kind of all-fibre devices based in the coupling of different fibre modes by UV laser fabricated phrase gratings. The most prominent phase grating that couples the forward propagating to the backward propagating fundamental mode is called the fibre Bragg ...
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