Self-aligned coupling of optical transmitter and receiver modules to board-integrated optical multimode waveguides

A coupling concept for a self-aligning and passive assembly of optical transmitter and receiver modules to board-integrated multimode waveguides is presented. The coupling mechanism is based on a 90 degree(s) beam deflection provided by micro-mirrors which are part of the board-integrated waveguides. The alignment is obtained by a mechanical high precision interface consisting of alignment pins well known from MT connectors at the module side and corresponding holes which are part of the optical layer. As the production of the alignment holes is part of the manufacturing of the optical layer, the required accuracy can be achieved without noteworthy difficulties.