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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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Conference Article |
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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 |
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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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Lee, B. G.; Assefa, S.; Green, W. M. J.; Min Yang; Schow, C. L.; Jahnes, C. V.; Sheng Zhang; Singer, J.; Kopp, V. I.; Kash, J. A.; Vlasov, Y. A. |
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Multichannel high-bandwidth coupling of ultradense silicon photonic waveguide array to standard-pitch fiber array |
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2011 |
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J. Lightwave Technol. |
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29 |
Issue |
4 |
Pages |
475-482 |
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optical waveguides, from chiralphotonics |
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A multichannel tapered coupler interfacing standard 250-μm-pitch low-numerical-aperture (NA) polarization-maintaining fiber arrays with ultradense 20- μm-pitch high-NA silicon waveguides is designed and fabricated. The coupler is based on an array of 12 dual-core glass waveguides on 250-μ m pitch that are tapered to a 20- μm pitch, simultaneously providing both pitch and spot-size conversion. At the wide end, the inner core matches the NA and mode profile of standard single-mode fiber. When drawn and tapered, the inner core “vanishes†and the outer core, surrounded by the clad, matches the NA and mode profile of the on-chip photonic waveguide. Ultradense high-efficiency coupling to an array of Si photonic waveguides is demonstrated using a 12-channel polarization-maintaining-fiber pigtailed tapered coupler. Coupling to Si waveguides is facilitated using SiON spot-size converters integrated into the Si photonic IC to provide 2-3-μm mode field diameters compatible with the tapered coupler. The tapered coupler achieves <; 1 dB coupling losses to photonic waveguides. Furthermore, eight-channel coupling is shown with less than -35 dB crosstalk between channels. Finally, a 640-Gb/s wavelength-division-multiplexing signal is coupled into four waveguides occupying 80 μm of chip edge, providing 160-Gb/s per-channel bandwidths. |
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849 |
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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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Year |
2010 |
Publication |
Optics Letters |
Abbreviated Journal |
Opt. Lett. |
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35 |
Issue |
3 |
Pages |
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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Kopp, Victor I.; Churikov, Victor M.; Genack, Azriel Z. |
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Title |
Chiral-fiber gratings sense the environment |
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Conference Article |
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Year |
2008 |
Publication |
Laser Focus World |
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44 |
Issue |
6 |
Pages |
76-79 |
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Keywords |
chiral fiber gratings, chiral gratings, from chiralphotonics |
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The article focuses on the use of chiral fiber gratings in sensing. It discusses the production of chiral optical fibers which are created through twisting fibers. It cites experiments concerning the function of chiral-fiber grating produced by twisting optical fibers. The process and results of the experiments are also discussed in the article. |
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850 |
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