Optimization of optical cross-connects with wave-mixing conversion
This paper presents new constructions of multistage wave-mixing networks with arbitrary b x b space-switching elements, where b >= 2. In these networks, for a size of F fiber links and W wavelengths per link, converter requirements are O(F log(b) W) or O(FW/b) for rearrangeable nodes, and O(F log(b)W log(b)(FW)) or O(FW log(b)(FW)/b) for different types of strictly nonblocking nodes inspired from the Cantor topology. In all cases, the worst case number of cascaded conversion is O(log(b) W). When b = W <= F, the required number of converters, and the worst case number of cascaded conversions are respectively O(F) and O(1), and are both optimal up to a constant. The new networks generalize and improve upon previous wave-mixing networks based on 2 x 2 space switches.
wave-mixing photonic cross-connect wavelength-conversion wavelength-switching