Title :
Acousto-optic tunable filters for wavelength division multiplexed optical fibre systems
Author :
Legg, P.J. ; Ford, P. J Legg C W ; Smyth, W.G. ; Booth, R.C.
Author_Institution :
British Telecom Res. Labs., Ipswich, UK
Abstract :
The three important device elements of a channel selecting lithium niobate acousto-optic tunable filter (operating at both 1.3 mu m and 1.55 mu m) are the optical waveguide, the surface acoustic wave (SAW) transducer and the waveguide polariser. The design and fabrication of these elements to achieve low loss, broad tunability and narrow passband are reported and the performance of a channel selecting filter when fully packaged with fibre tails and components for temperature control is described.<>
Keywords :
acoustic transducers; acousto-optical devices; optical communication equipment; optical fibres; optical links; optical polarisers; optical waveguides; passive filters; surface acoustic wave devices; tuning; 1.3 micron; 1.5 micron; LiNbO/sub 3/; SAW transducer; WDM; acousto-optic tunable filter; broad tunability; channel selecting filter; design; fabrication; fibre tails; low loss; narrow passband; optical fibre systems; optical waveguide; packaging; surface acoustic wave; temperature control; waveguide polariser; Acoustic transducers; Acoustooptic devices; Optical communication equipment; Optical fibers; Optical polarization; Optical waveguides; Passive filters; Surface acoustic wave devices; Tuning;
Conference_Titel :
Optical Multiple Access Networks, IEE Colloquium on
Conference_Location :
London, UK
