K. A. Zagorul'ko, P. G. Kryukov, E. M. Dianov, A. Dragomir, D. N. Nikogosyan, “Fibre-Bragg-grating writing in single-mode optical fibres by UV femtosecond pulses”, Kvantovaya Elektronika, 2003, Volume 33, Number 8,Pages <nobr>728

This article is cited in 4 papers

Letters

Fibre-Bragg-grating writing in single-mode optical fibres by UV femtosecond pulses

K. A. Zagorul'ko^a, P. G. Kryukov^a, E. M. Dianov^a, A. Dragomir^b, D. N. Nikogosyan^b

^a Fiber Optics Research Center of the Russian Academy of Sciences, Moscow
^b Department of Physics, National University of Ireland, University College Cork, Ireland

Abstract: Fibre-Bragg-grating writing in single-mode optical fibres by the phase-mask method using 220-fs, 264-nm UV pulses of intensity 31 – 77 GW cm^-2 is reported for the first time. The achieved degree of modulation of the photoinduced refractive index was 1.9 × 10^-3 in an H₂-loaded SMF-28 telecommunication fibre and 1.1 × 10^-3 in a H₂-free Nufern GF1 fibre. The dependence of the induced refractive index on the intensity for the same irradiation fluences in the case of the H₂-loaded SMF-28 fibre shows that the refractive index is induced due to nonlinear absorption.

PACS: 42.81.Qb, 42.65.Re, 42.70.Nq

Received: 06.06.2003