Multimode planar lightwave circuits using direct write of polymers

摘要

The performance of a novel acylate-based thermally stable photo-polymer is presented. rapid direct writing of the guides and other strctures is realised using a high-power 325 nm He:Cd laser. The loss is measured by cut-back to be less than 0.17 dB/cm at 850 nm and less than 0.5 dB/cm at 1310nm. This material and writing system is used to make 50 mu m square core cladded guides and compliant bumps for device attachment, and 45 deg TIR mirrors for out of plane coupling.