Tailorable dual-wavelength-band coupling in a transverse-electric-mode focusing subwavelength grating coupler.
作者： Wen Zhou , Zhenzhou Cheng , Xiankai Sun , Hon Ki Tsang
DOI: 10.1364/OL.43.002985
关键词:
摘要: A transverse-electric-mode focusing subwavelength grating coupler (FSWGC) is proposed and demonstrated for dual-wavelength-band (DWB) coupling from a single-mode fiber into suspended-membrane waveguide the first time, to best of our knowledge. Location separation two peaks can be flexibly tailored based on design methodology. As proof concept, DWB FSWGCs working at (1486.0, 1594.5) nm (1481.5, 1661.5) are experimentally with efficiencies (18.3%, 20.1%) (14.5%, 17.5%), 3-dB bandwidths (55.0, 30.5) (44.0, >39.5) nm, respectively. FSWGC (1480, 1830) wavelength 350 nm (38.0%, 33.2%) also numerically predicted.
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