A bio-inspired anisotropic grating coupler design achieves 41% simulated vertical in-coupling efficiency and over 10 dB unidirectionality at 1550 nm in silicon photonics, with experimental unidirectionality of 12.8 dB.
On the effective medium theory of sub- wavelength periodic structures.Journal of Modern Optics, 43(10):2063–2085
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Moth's eye-inspired perfectly vertical subwavelength grating coupler for silicon photonics
A bio-inspired anisotropic grating coupler design achieves 41% simulated vertical in-coupling efficiency and over 10 dB unidirectionality at 1550 nm in silicon photonics, with experimental unidirectionality of 12.8 dB.