Title :
Coherent detection of stimulated Brillouin backscatter on photoconductive three-wave mixer for sensing applications
Author :
Everard, J.K.A. ; Thomas, Robert
Author_Institution :
Dept. of Electron. & Electr. Eng., King´s Coll. London, UK
Abstract :
Describes the coherent detection of stimulated Brillouin scattering (SBS) from an optical fibre, using an InP photoconductive three-wave mixer. In this mixer two optical signals offset by 33 GHz are multiplied together with a microwave signal, all within the same device, to produce an output signal of a few hundred MHz. This arrangement could be used to measure the temperature distribution along a fibre.
Keywords :
nonelectric sensing devices; optical fibres; photoconducting devices; stimulated Brillouin scattering; InP; microwave signal; optical fibre; optical signals; photoconductive three-wave mixer; sensing applications; stimulated Brillouin backscatter; temperature distribution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890829
