Results 151 to 160 of about 1,008 (192)

Uv-written in-fibre Bragg gratings

Optical and Quantum Electronics, 1996
The techniques for fabrication and the properties of periodic and aperiodic fibre Bragg gratings produced by UV exposure in photosensitive optical fibres are reviwwed with an emphasis on applications.
I. Bennion, J.A.R. Williams, L. Zhang, K. Sugden, N.J. Doran   +4 more
openaire   +1 more source

Fibre Bragg Grating and No-Core Fibre Sensors

2018
Introduction -- Literature Review -- Theory -- Methodology -- Indoor Fibre Bragg Grating Temperature Sensor -- Outdoor Fibre Bragg Grating Temperature Sensor -- Conclusion.
Suzairi Daud, Jalil Ali
openaire   +1 more source

Sinusoidally Chirped Fibre Bragg Gratings

Chinese Physics Letters, 2003
A sinusoidal chirp structure is proposed to improve the performance of fibre gratings as dispersion compensators and multichannel filters. Nearly ideal reflection spectra from sinusoidally chirped fibre gratings are exhibited. The bandwidth utilization defined as the ratio of -1 dB to -30 dB bandwidths could be higher than 0.85, even up to 0.985.
Zhang Lin, Yang Chang-Xi
openaire   +1 more source

Adding functionality to fibre Bragg gratings

Proceedings of LEOS'94, 2002
Until 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, J. Canning, B. Eggleton, P. Hill, P.A. King, M.G. Sceats   +5 more
openaire   +1 more source

Regenerated femtosecond fibre Bragg gratings

SPIE Proceedings, 2012
We 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, C. Smelser, J. Canning, G. le Garff, M. Lancry, S. Mihailov   +5 more
openaire   +1 more source

Dispersion-free fibre Bragg gratings

OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001
Fibre 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, Periklis Petropoulos, Michalis N. Zervas, Ricardo Feced   +3 more
openaire   +1 more source

Photosensitisation of Phosphosilicate Fibre Bragg Gratings

Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications, 1995
Photolytic 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
openaire   +1 more source

Packaging of optical Fibre Bragg Gratings

2001 Proceedings. 51st Electronic Components and Technology Conference (Cat. No.01CH37220), 2002
Fibre 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
openaire   +1 more source

Dispersion compensating fibre Bragg gratings [PDF]

, 1998
Broadband Chirped fibre gratings allow the upgrade of the existing non-dispersion shifted fibre network to high data rate operation within the 1.55µm low-loss window.
Laming, R.I., Cole, M.J., Durkin, M., Ibsen, M., Zervas, M.N., Gusmeroli, V., Zuccala, A., Román, J.E.   +7 more
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Fibre Bragg gratings for dispersion compensation [PDF]

, 1997
Broadband chirped fibre gratings allow the upgrade of the existing non-dispersion shifted fibre network to high data rate operation within the 1.55µm low-loss window. The design, fabrication, performance and application of these devices is covered.
Laming, R.I., Cole, M.J., Durkin, M., Ibsen, M., Zervas, M.N., Ennser, K.E., Gusmeroli, V.   +6 more
openaire