Title :
Efficient light confinement to λ/10 spot sizes in optical fibre tips
Author :
Ding, M. ; Ou, J.Y. ; Sessions, N.P. ; Jung, Y. ; Brambilla, G.
Author_Institution :
Univ. of Southampton, Southampton, UK
Abstract :
Light confinement beyond the diffraction limit has been achieved in optical fibre tips. We successfully fabricated a gold-coated optical fibre tip with wedge-shaped apex for the efficient excitation of surface plasmon polaritons (SPPs). An improved transmissivity higher than 10-2 and spot sizes of the order of λ/10 have been obtained by optimizing the overall light throughput along the fibre tip.
Keywords :
gold; optical fibre fabrication; polaritons; surface plasmon resonance; diffraction limit; gold-coated optical fibre tip; light confinement; spot sizes; surface plasmon polaritons; transmissivity; Focus Ion Beam; Optical fibre tip; surface plasmon polaritons;
Conference_Titel :
Optical Communications and Networks (ICOCN 2010), 9th International Conference on
Conference_Location :
Nanjing
DOI :
10.1049/cp.2010.1232
