A method for providing X,Y and Z alignment during fabrication of an optical subassembly (OSA) by active alignment and fixing with epoxy through the agency of radio frequency (RF) heating in order to provide acceptable feedback-induced noise level along with acceptable coupling efficiency....http://www.google.de/patents/US5631991?utm_source=gb-gplus-sharePatent US5631991 - Plastic optical subassemblies for light transfer between an optical fiber and an optoelectronic converter and the fabrication of such plastic optical subassemblies
