Characterization of organic multi-mode optical waveguides for the electro-optical printed circuit board (EOPCB)

In this paper, characteristics of optical propagation of the vertical cavity surface emitting laser (850 nm VCSEL) through organic multi-mode optical waveguides are studied. Based on the typical optical loss measurement and the beam profile analysis of optical power distribution, the variation and co-relation between the VCSEL light source and the waveguide outputs are explored. Key factors of waveguide design for EOPCB integration, including the coupling scheme, geometric dimensions, bending, thermal effects, reliability, and etc., are further characterized based on experimental results. A 2.5Gbps optical interconnection prototype using film-type organic array waveguide is also demonstrated here for short reach data-communication at 12 cm.