Optical transmission and receiving device for implementing passive alignment of components and method for passively aligning components

Abstract

An optical device for implementing passive alignment of parts and a method therefore, more particularly an optical device and a method therefore that utilize an alignment reference partarranged on the substrateto passively align an optical element partwith a lens-optical fiber connection part. For the passive alignment of parts, connection pillarsof an alignment reference partare coupled to substrate holes, one or more light-emitting elementsand one or more light-receiving elementsare aligned in a row in a particular interval with respect to alignment holesarranged opposite each other in the alignment reference part, a lens-optical fiber connection partis aligned with respect to the alignment holes, and an optical fiberis aligned with the optical alignment point at a surfaceof a prism forming a portion of the lens-optical fiber connection part. In addition, the optical fiberis secured with an optical fiber pin, after which a metal caseis covered and coupled with a case securing pin. The optical device for implementing passive alignment of parts provides the advantages of simplifying the passive optical alignment for multiple channels, so as to minimize alignment error, and of reducing and simplifying the structure of the optical modules and minimizing the number of parts used, so as to lower the costs of the optical modules.