40 Gb/s Data Transmission Over a 1 m Long Multimode Polymer Spiral Waveguide for Board-Level Optical Interconnects
Gustavsson, Johan S
Journal of Lightwave Technology
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Bamiedakis, N., Chen, J., Westbergh, P., Gustavsson, J. S., Larsson, A., Penty, R., & White, I. (2014). 40 Gb/s Data Transmission Over a 1 m Long Multimode Polymer Spiral Waveguide for Board-Level Optical Interconnects. Journal of Lightwave Technology, 33 882-888. https://doi.org/10.1109/JLT.2014.2371491
Optical interconnects have attracted considerable attention for use in short-reach communication links within high performance electronic systems, such as data centres, supercomputers and data storage systems. Multimode polymer waveguides in particular, constitute an attractive technology for use in board-level interconnects as they can be cost-effectively integrated onto standard PCBs and allow system assembly with relaxed alignment tolerances. However, their highly-multimoded nature raises important concerns about their bandwidth limitations and their potential to support very high on-board data rates. In this paper, we report record error-free (BER<10-12) 40 Gb/s data transmission over a 1 m long multimode polymer spiral waveguide and present thorough studies on the waveguide bandwidth performance. The frequency response of the waveguide is investigated under a wide range of launch conditions and in the presence of input spatial offsets which are expected to be highly-likely in real-world systems. A robust bandwidth performance is observed with a bandwidth-length product of at least 35 GHz×m for all launch conditions studied. The reported results clearly demonstrate the potential of this technology for use in board-level interconnects, and indicate that data rates of at least 40 Gb/s are feasible over waveguide lengths of 1 m.
polymer waveguides, multimode waveguides, waveguide bandwidth, board-level optical interconnects
This work was supported by the U.K. EPSRC through the Centre for Advanced Photonics and Electronics (CAPE), and the Swedish Foundation for Strategic Research.
External DOI: https://doi.org/10.1109/JLT.2014.2371491
This record's URL: https://www.repository.cam.ac.uk/handle/1810/246837
Attribution 2.0 UK: England & Wales
Licence URL: http://creativecommons.org/licenses/by/2.0/uk/