LASER-ABLATION OF NONLINEAR-OPTICAL POLYMERS TO DEFINE LOW-LOSS OPTICAL CHANNEL WAVE-GUIDES

Laser photoablation of polymeric channel waveguides with embedded contact masks is described. The ablation technique is capable of forming low-optical-loss waveguides with an end-face quality suitable for pigtailed devices at rapid rates. The optical-mode profiles and the optical-loss measurements are reported, and scanning electron microscopy characterization and laser ablation rate measurements are described. The end-face quality processed by laser ablation is sufficiently good for end-fire coupling and thus can permit the elimination of polishing steps.