Zubkova E, Golikov A, An P, Kovalyuk V, Korneev A, Ferrari S, et al. CWDM demultiplexer using anti-reflection, contra-directional couplers based on silicon nitride rib waveguide. In: J. Phys.: Conf. Ser. Vol 1410.; 2019. 012179.
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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Kuzin A, Kovalyuk V, Golikov A, Prokhodtsov A, Marakhin A, Ferrari S, et al. Efficiency of focusing grating couplers versus taper length and angle. In: J. Phys.: Conf. Ser. Vol 1410.; 2019. 012181.
Abstract: 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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Moshkova M, Morozov P, Divochiy A, Vakhtomin Y, Smirnov K. Large active area superconducting single photon detector. In: J. Phys.: Conf. Ser. Vol 1410.; 2019. 012139.
Abstract: We present development of large active area superconducting single-photon detectors well coupled with standard 50 μm-core multi-mode fiber. The sensitive area of the SSPD is patterned using the photon-number-resolving design and occupies an area of 40×40 μm2. Using this approach, we have obtained excellent specifications: system detection efficiency of 47% measured using a 900 nm laser and low dark count rate of 100 cps. The main advantages of the approach presented are a very short dead time of the detector of 22 ns and FWHM jitter value of about 130 ps.
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Titova N, Gayduchenko IA, Moskotin MV, Fedorov GF, Goltsman GN. Carbon nanotube based terahertz radiation detectors. In: J. Phys.: Conf. Ser. Vol 1410.; 2019. 012208 (1 to 5).
Abstract: In this paper, we study terahertz detectors based on single quasimetallic carbon nanotubes (CNT) with asymmetric contacts and different metal pairs. We demonstrate that, depending on the contact metallization of the device, various detection mechanisms are manifested.
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Manova NN, Smirnov EO, Korneeva YP, Korneev AA, Goltsman GN. Superconducting photon counter for nanophotonics applications. In: J. Phys.: Conf. Ser. Vol 1410.; 2019. 012147 (1 to 5).
Abstract: We develop large area superconducting single-photon detector SSPD with a micron-wide strip suitable for free-space coupling or packaging with multi-mode optical fibres. The detector sensitive area is 20 μm in diameter. In near infrared (1330 nm wavelength) our SSPD exhibits above 30% detection efficiency with low dark counts and 45 ps timing jitter.
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