Development and study of Bragg fibres with a large mode field and low optical losses

M. E. Likhachev (1) , S.L. Semjonov (1) , M.M. Bubnov (1) , E.M. Dianov (1) , V.F. Khopin (1) , M.Y. Salganskii (2) , M.A. Gurjanov (2) , A.N. Gurjanov (2) , Raphaël Jamier (3) , Pierre Viale (3) , Sébastien Février (3) , Jean-Marc Blondy (3)

1 Fiber Optics Research Center
2 Institute of Chemistry of High Purity Substances
3 PHOTONIQUE

A silica Bragg fibre with optical losses lower than 10 dB km-1 is fabricated for the first time. The Bragg fibre manufactured by the MCVD method is intended for operation at a wavelength of 1.06 μm and has the mode-spot diameter 18.5 μm (the mode-spot area is 270 μm2). The fibre is considerably less sensitive to bending than step-index fibres and microstructure fibres with the same mode-spot size. The possibility of fabricating a Bragg fibre with the record mode-spot area (530 μm2 at the operating wavelength of 855 nm) for all-silica fibres is demonstrated.

M. E. Likhachev, S.L. Semjonov, M.M. Bubnov, E.M. Dianov, V.F. Khopin, et al.. Development and study of Bragg fibres with a large mode field and low optical losses. Quantum Electronics, 2006, 36 (7), pp.581-586. ⟨10.1070/QE2006v036n07ABEH013170⟩. ⟨hal-00712114⟩