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Broadband and scalable optical coupling for silicon photonics using polymer waveguides

Author:
La Porta, Antonio  Weiss, Jonas  Dangel, Roger  Jubin, Daniel  Meier, Norbert  Horst, Folkert  Offrein, Bert Jan  


Journal:
ADVANCED OPTICAL TECHNOLOGIES


Issue Date:
2018


Abstract(summary):

We present optical coupling schemes for silicon integrated photonics circuits that account for the challenges in large-scale data processing systems such as those used for emerging big data workloads. Our waveguide based approach allows to optimally exploit the on-chip optical feature size, and chip-and package real-estate. It further scales well to high numbers of channels and is compatible with state-of-the-art flip-chip die packaging. We demonstrate silicon waveguide to polymer waveguide coupling losses below 1.5 dB for both the O- and C-bands with a polarisation dependent loss of < 1 dB. Over 100 optical silicon waveguide to polymer waveguide interfaces were assembled within a single alignment step, resulting in a physical I/O channel density of up to 13 waveguides per millimetre along the chip-edge, with an average coupling loss of below 3.4 dB measured at 1310 nm.


Page:
107---113


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