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An, P., Kovalyuk, V., Golikov, A., Zubkova, E., Ferrari, S., Korneev, A., et al. (2018). Experimental optimisation of O-ring resonator Q-factor for on-chip spontaneous four wave mixing. In J. Phys.: Conf. Ser. (Vol. 1124, 051047).
Abstract: In this paper we experimentally studied the influence of geometrical parameters of the planar O-ring resonators on its Q-factor and losses. We systematically changed the gap between the bus waveguide and the ring, as well as the width of the ring. We found the highest Q = 5×105 for gap 2.0 μm and the ring width 2 μm. This work is important for further on-chip SFWM applications since the generation rate of the biphoton field strongly depends on the quality factor as Q3