Title :
Acousto-optic frequency shifting in ordinary single-mode fibre
Author :
Ji, Jean ; Uttam, D. ; Culshaw, Brian
Author_Institution :
University of Strathycyle, Department of Electronic & Electrical Engineering, Glasgow, UK
Abstract :
A new all-fibre frequency shifter is reported. Bend-induced birefringence is introduced in ordinary single-mode fibre. Light launched into one of the principal axes thus created is coupled with a frequency shift to the orthogonal axis by interaction with a travelling acoustic wave. Unwanted sideband suppression of 20 dB has been demonstrated.
Keywords :
acousto-optical devices; birefringence; fibre optic sensors; optical fibres; acousto-optic frequency shifting; bend-induced birefringence; fibre optic sensors; optical fibres; orthogonal axis; principal axes; sideband suppression; single-mode fibre; travelling acoustic wave;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860782
