A novel guided structure is proposed which is aimed at developing integrate
d all-optical signal processors exploiting two wave mixing interactions. Th
e structure is based on the whispering propagation on a hemispherical glass
substrate and contains a dye-doped photoresist film as the test nonlinear
material. Its functionality was demonstrated successfully with two wave mix
ing experiments that were performed with CW light at 1321 nm and with a pro
be beam at 647 nm. (C) 2000 Elsevier Science B.V. All rights reserved.