Title :
Demonstration of birefringent optical fibre frequency shifter employing torsional acoustic waves
Author :
Berwick, M. ; Pannell, C.N. ; Russell, P.S.J. ; Jackson, D.A.
Author_Institution :
Canterbury Univ., Kent, UK
fDate :
4/25/1991 12:00:00 AM
Abstract :
A fibre-optic frequency shifter utilising torsional acoustic waves to produce a travelling perturbation which couples the polarisation modes of a linearly birefringent optical fibre is demonstrated. The shift in optical frequency was 3.195 MHz and an optical coupling efficiency of 6% was obtained with 780 mW of electrical power.
Keywords :
acousto-optical devices; fibre optics; optical modulation; 6 percent; 780 mW; birefringent optical fibre frequency shifter; electrical power; fibre-optic frequency shifter; optical coupling efficiency; shift in optical frequency; torsional acoustic waves; travelling perturbation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910444
