期刊
ACS PHOTONICS
卷 4, 期 10, 页码 2385-2389出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.7b00760
关键词
silicon photonics; nanophotonics; metamaterials; zero refractive index; interferometry
类别
资金
- National Science Foundation (NSF) [DMR-1360889]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- National Science Foundation [1541959]
We demonstrate silicon waveguides that support phase free propagation in the telecom regime. These waveguides have smaller footprints and exhibit improved energy transfer capabilities as compared to previous optical waveguides that support phase advance-free modes. We measure the effective refractive index using on-chip interferometry and observe a zero-crossing around a wavelength of lambda = 1625 nm. At this wavelength, we observe the coherent oscillations of waves that span the entire length of the waveguide. These waveguides are based on a 220-nm-thick silicon-on insulator platform and, thus, are inherently compatible with established silicon photonic technologies.
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