Journal
OPTICS EXPRESS
Volume 18, Issue 24, Pages 25061-25067Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.025061
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Funding
- Air Force Office of Scientific Research [FA9550-08-1-0101]
- National Science Foundation (NSF) STC MDITR Center [DMR0120967]
- Washington Research Foundation
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Electro-optic polymer-clad silicon slot waveguides have recently been used to build a new class of modulators, that exhibit very high bandwidths and extremely low drive voltages. A key step towards making these devices practical will be lowering optical insertion losses. We report on the first measurements of low-loss waveguides that are geometrically suitable for high bandwidth slot waveguide modulators: a strip-loaded slot waveguide. Waveguide loss for undoped waveguides of 6.5 +/- 0.2 dB/cm was achieved with 40 nm thick strip-loading, with the full silicon thickness around 220 nm and a slot size of 200 nm, for wavelengths near 1550 nm. (C) 2010 Optical Society of America
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