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Doerr, C.R.; Zhang, C.; Winzer, P.J. |
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Title |
Monolithic InP multi-wavelength coherent receiver |
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2010 |
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Conference on optical fiber communication, collocated national fiber optic engineers conference |
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Conf. OFC/NFOEC |
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1-3 |
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InP balanced detector, waveguide grating, polarization splitter, from chiralphotonics |
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We propose and demonstrate a novel four-channel monolithic polarization-diversity dual-quadrature coherent receiver with balanced detection in InP. It uses an interleave-chirped arrayed waveguide grating that acts simultaneously as a demultiplexer, 90° hybrid, and polarization splitter. |
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851 |
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Lee, B. G.; Doany, F. E.; Assefa, S.; Green, W.; Yang, M.; Schow, C. L.; Jahnes, C. V.; Zhang, S.; Singer, J.; Kopp, V. I.; Kash, J. A.; Vlasov, Y. A. |
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Title |
20-μm-pitch eight-channel monolithic fiber array coupling 160 Gb/s/channel to silicon nanophotonic chip |
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Conference Article |
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2010 |
Publication |
Conf. OFC/NFOEC |
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Conf. OFC/NFOEC |
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1-3 |
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spot size converters, SSC, optical waveguides, optical fiber waveguides, ultra-dense silicon waveguide arrays, silicon waveguides, waveguide arrays, from chiralphotonics |
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A multichannel tapered coupler interfacing standard 250-μm-pitch low-NA polarization-maintaining fiber arrays with ultra-dense 20-μm-pitch high-NA silicon waveguides is designed, fabricated, and tested, demonstrating coupling losses below 1 dB and injection bandwidths of 160 Gb/s/channel. |
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Conference on optical fiber communication, collocated national fiber optic engineers conference |
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852 |
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Churikov, Victor M.; Kopp, Victor I.; Genack, Azriel Z. |
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Title |
Chiral diffraction gratings in twisted microstructured fibers |
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Journal Article |
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2010 |
Publication |
Optics Letters |
Abbreviated Journal |
Opt. Lett. |
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35 |
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3 |
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342-344 |
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chiral diffracion gratings, optical fiber gratings, from chiralphotonics |
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We observed dips in transmission spectra of uniformly twisted pure-silica microstructured fibers. The spectral positions of the dips and their insensitivity to the surrounding medium are consistent with Bragg diffraction from the helical structure. The reproducibility of the variation of the dip wavelength with temperature up to 1000°C makes the chiral diffraction grating suitable for high-temperature sensing. |
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853 |
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Kataoka, T; Kajikawa, K.; Kitagawa, J.; Kadoya, Y; Takemura, Y. |
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Improved sensitivity of terahertz detection by GaAs photoconductive antennas excited at 1560 nm |
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2010 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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97 |
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201110 (1-3) |
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photoconductive antenna (PCA) |
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The terahertz detection by photoconductive antennas (PCAs) based on low-temperature grown (LTG) GaAs with 1.5 μm pulse excitation was revisited. We found that the detection efficiency can be improved by a factor of 10 (20 dB) by reducing the excitation spot size and the gap length of the PCA, maintaining the low noise feature of the PCA on LTG GaAs. As a result, the signal-to-noise ratio higher than 50 dB was obtained at a reasonable incident power of 9.5 mW, suggesting that the scheme is promising for the detection of terahertz waves in practical time domain systems. |
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904 |
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Diana Prado Lopes Aude |
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Modeling superconductors using surface impedance technique |
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2010 |
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MIT |
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MIT |
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homogeneous isotropic BCS superconductor complex conductivity superconductor surface impedance |
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938 |
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