Zhang, W.Afshar Vahid, S.Ebendorff-Heidepriem, H.Monro, T.2009-10-212009-10-212008Electronics Letters, 2008; 44(25):1453-14550013-51941350-911Xhttp://hdl.handle.net/2440/51263A record effective fibre nonlinearity of 5400W^-1km^-1 at 1550nm has been measured in a non-tapered bismuth microstructured optical fibre. This extremely high nonlinearity has been achieved by fabricating a fibre with a suspended-nanowire structure with a core diameter of only 530nm. The nonlinear phase shift is measured using the dual-frequency self-phase modulation method. This result demonstrates the potential of this emerging class of fibres for use in compact nonlinear devices. © 2008 The Institution of Engineering and Technology.enJournal article002008427410.1049/el:200830940002622709000142-s2.0-5734912511940827Ebendorff-Heidepriem, H. [0000-0002-4877-7770]