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An P, Kovalyuk V, Golikov A, Zubkova E, Ferrari S, Korneev A, et al. Experimental optimisation of O-ring resonator Q-factor for on-chip spontaneous four wave mixing. In: J. Phys.: Conf. Ser. Vol 1124.; 2018. 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
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