PT Unknown AU Elmanov, I Elmanova, A Kovalyuk, V An, P Goltsman, G TI Integrated contra-directional coupler for NV-centers photon filtering SE Proc. 32-nd EMSS PY 2020 BP 354 EP 360 DI 10.46354/i3m.2020.emss.052 DE NV-centers; nanodiamonds; quantum photonic integrated circuits; contra-direction coupler; Bragg gratings AB We modelled an integrated optical contra-directional coupler on silicon nitride platform. Performance of the filter was studied depending on different parameters, including the grating period and the height of teeth of the Bragg grating near 637 nm operation wavelength. The obtained results can be used for a design and fabrication of quantum photonic integrated circuits with on-chip single-photon NV-centers in nanodiamonds. ER