We demonstrate a thin-cladding polymer-fibre-based optical clock distributi
on circuit for board-level optical clock delivery applications. The robust
yet flexible 1-to-64 node distribution scheme offers, at 30 cm distribution
length, 9.45 GHz bandwidth, 23 ps optical skews, 3.5 dB power distribution
uniformity and an overall excess loss of 6.2 dB.