Fabrication of single-crystal PTS channel waveguide

Summary form only given. Polydiacetylene conjugated polymers have been an extraordinary class of third-order nonlinear optical material by virtue of both their excellent crystalline properties and large nonlinearity. More specifically, poly bis(p-toluene sulfonate) of 2,4-hexdiyne-1,6-diot (PTS) single crystals possess the largest nonresonant third-order nonlinearity among this class of materials and a very small linear and nonlinear absorption in the communication window around 1.55 /spl mu/m. This should allow all-optical devices to be achieved with low power requirements. To realize a switching device, a PTS channel waveguide in crystalline form will be needed. We report here a technologically simple fabrication method based on capillary action, slow solvent evaporation, and controlled configuration for making PTS channel waveguides for all-optical devices.