Issue link: https://iconnect007.uberflip.com/i/1330321
JANUARY 2021 I PCB007 MAGAZINE 93 Figure 16: Optocard fabrication. (Waveguide on Optocard, 16a), with integral or flex waveguides (16b), patterned process, 16c; cross-sections 16d; operating waveguides in the rigid board, 16e and f; and opto-electrical integration cross-section, 16g. The Optomodule is an organic HDI chip carrier (known in IBM as 'SLC') with the Optochip containing optical VCSEL and PD chips aligned by Optochip lens array to waveguide lens array on the Optoboard. (Source IBM) Figure 17: Optocard with flex waveguide attached (a) flex waveguide during fabrication; (b) waveguide laminated to Optomodule; (c) completed Optocard [10] . a. b. c.