Abstract

Efficient Raman conversion in optical fibres has been the subject of much study because it is a useful technique for generation of new wavelengths and is an important limitation to the peak power transmission capability of fibres. Anti-Stokes conversion is less frequently observed [1] due to the requirement for phase matching in the nonlinear interaction of the two pump fields with the generated Stokes and anti-Stokes fields, however, in a multimode optical fibre modal dispersion can compensate for material dispersion. In this paper generation of up to seven orders of anti-Stokes output from copper vapour laser (CVL) pumping of a multimode optical fibre is reported.

© 1996 Optical Society of America