Knight, J.C., Mangan, B., Birks, T.A., Russell, P.St.J. and de Sandro, J.P.
Multicore photonic crystal fibre
At IOP Meeting on In-Fibre Bragg Gratings and Special Fibres, United Kingdom.
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The fabrication procedure used in forming photonic crystal fibre lends itself to the fabrication of fibre with more than one core. Previous multicore fibres have been made by fusing together several monocore preforms, a time-consuming and costly process. We have recently shown that multicore photonic crystal fibre can be fabricated as easily and as quickly as single-core fibre, and have made a fibre with six symmetrically placed cores.
The individual cores can be made to support a single or several guided modes by changing the temperature at which the fibre is drawn. Likewise, the coupling between the cores is determined by the drawing temperature as well as by the fibre design. This configuration offers the opportunity to study the coupling between a large number of cores under a variety of conditions, as well as having possible applications in sensing. We present some preliminary results on different mode and coupling configurafions, and their wavelength dependence.
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