Acousto-optic frequency shifting in ordinary single-mode fibre

9 October 1986

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 22 (21) , 1141-1142
https://doi.org/10.1049/el:19860782

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

SIDEBAND SUPPRESSION
OPTICAL FIBRES
ACOUSTO-OPTIC FREQUENCY SHIFTING
BEND-INDUCED BIREFRINGENCE
FIBRE OPTIC SENSORS
PRINCIPAL AXES
ORTHOGONAL AXIS
TRAVELLING ACOUSTIC WAVE
SINGLE-MODE FIBRE

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