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Zubkova, E.; Golikov, A.; An, P.; Kovalyuk, V.; Korneev, A.; Ferrari, S.; Pernice, W.; Goltsman, G. |
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CWDM demultiplexer using anti-reflection, contra-directional couplers based on silicon nitride rib waveguide |
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Conference Article |
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2019 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
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1410 |
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012179 |
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coarse wavelength-division multiplexing, Si3N4 rib waveguide |
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Abstract |
We report on the development and fabrication of a 9-channel coarse wavelength-division multiplexing for telecommunication wavelengths (1550 nm) using anti-reflection contra-directional couplers, based on silicon nitride (Si3N4) rib waveguide. The transmitted and reflected spectrum in each channel of the demultiplexer were measured. The average full width at half maximum of the transmitted (reflected) spectra is about 3 nm. |
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1742-6588 |
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1183 |
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Kuzin, A.; Kovalyuk, V.; Golikov, A.; Prokhodtsov, A.; Marakhin, A.; Ferrari, S.; Pernice, W.; Gippius, N.; Goltsman, G. |
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Title |
Efficiency of focusing grating couplers versus taper length and angle |
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Conference Article |
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Year |
2019 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
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1410 |
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Pages |
012181 |
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focusing grating coupler |
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Here we experimentally studied dependence of a focusing grating coupler efficiency versus taper length and angle on silicon nitride platform. As a result, we obtained a dependence for the efficiency of a focusing grating coupler on the parameters of the taper length and angle. |
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1742-6588 |
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1184 |
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Rath, P.; Vetter, A.; Kovalyuk, V.; Ferrari, S.; Kahl, O.; Nebel, C.; Goltsman, G. N.; Korneev, A.; Pernice, W. H. P. |
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Travelling-wave single-photon detectors integrated with diamond photonic circuits: operation at visible and telecom wavelengths with a timing jitter down to 23 ps |
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2016 |
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Integrated Optics: Devices, Mat. Technol. XX |
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Integrated Optics: Devices, Mat. Technol. XX |
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9750 |
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135-142 |
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SSPD, Superconducting Nanowire Single-Photon Detector, SNSPD, Single Photon Detector, Diamond Photonics, Diamond Integrated Optics, Diamond Waveguides, Integrated Optics, Low Timing Jitter |
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Abstract |
We report on the design, fabrication and measurement of travelling-wave superconducting nanowire single-photon detectors (SNSPDs) integrated with polycrystalline diamond photonic circuits. We analyze their performance both in the near-infrared wavelength regime around 1600 nm and at 765 nm. Near-IR detection is important for compatibility with the telecommunication infrastructure, while operation in the visible wavelength range is relevant for compatibility with the emission line of silicon vacancy centers in diamond which can be used as efficient single-photon sources. Our detectors feature high critical currents (up to 31 μA) and high performance in terms of efficiency (up to 74% at 765 nm), noise-equivalent power (down to 4.4×10-19 W/Hz1/2 at 765 nm) and timing jitter (down to 23 ps). |
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Spie |
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Broquin, J.-E.; Conti, G.N. |
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1210 |
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