Planar waveguides for IDC data centers that withstand low temperatures
We report on the suitability of graded index polymer waveguides, fabricated using the Mosquito method, and graded index glass waveguides, fabricated using ion diffusion on thin glass foils, for deployment within future data center environments as part of an optically. This paper reviews the state of the art of silicon nitride waveguide platforms, with their capabilities complimentary to those of silicon-in-insulator platforms, among others, with respect to the loss levels and the power handling properties. Optical printed circuit board (OPCB) waveguide materials and fabrication methods have advanced considerably over the past 15 years, giving rise to two classes of embedded planar graded index waveguide based on polymer and glass. 045 dB/m) total propagation loss in planar waveguides with bonded thermal oxide upper claddings.
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