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Channel cross-coupling in a polymer-based single-mode bus array

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6 Author(s)
Tang, Suning ; Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA ; Chen, R.T. ; Mayer, R. ; Gerold, Dave
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In this paper, a crosstalk model is developed to study the packing density and interconnect distance limitations of an optical interconnect system employing polymer-based single-mode bus arrays. The upper limit of channel packing density (1250 channels/cm at interconnect distance of 5 cm) is determined for the first time using the crosstalk model, in which channel cross-coupling among an infinite number of waveguides is considered. Computer simulations are provided together with the proven experimental results. It is shown that there is a threshold of channel separation due to channel cross-coupling, which results in a tradeoff between channel packing density and interconnect distance. Waveguide dimension closer to the cutoff boundary of second mode (E12 x) is preferred for an optimum design

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Lightwave Technology, Journal of  (Volume:13 ,  Issue: 1 )