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Nano Lett. 2005 Feb;5(2):259-62.

Assembly of silica nanowires on silica aerogels for microphotonic devices.

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  • 1Department of Physics and Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.


We report on the assembly of low-loss silica nanowires into functional microphotonics devices on a low-index nondissipative silica aerogel substrate. Using this all-silica technique, we fabricated linear waveguides, waveguide bends, and branch couplers. The devices are significantly smaller than existing comparable devices and have low optical loss, indicating that the all-silica technique presented here has great potential for future applications in optical communication, optical sensing, and high-density optical integration.

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