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In this paper, we focus on the coupling loss of polymer waveguide based optical links, which exhibits a serious impact on the power budget in such a short-reach link. In particular, the optimum core size of polymer waveguides for the low coupling loss with VCSELs and PDs with small effective area is investigated both theoretically and experimentally.
To realize free optical wiring patterns on printed circuit boards (PCBs), polymer shuffling optical waveguides are fabricated, in which both crossing and curved core structures are combined. The obtained GI polymer shuffling waveguides show low insertion loss independent of the crossing angle and core size. The GI-core polymer shuffling waveguide is a key device for low loss and high density on-board...
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