Abstract

We design and fabricate an efficient broadband grating coupler on a $400\mathrm{nm}$ thick silicon-on-insulator wafer. The measured coupling loss is $3\mathrm{dB}$ when coupling to a single-mode fiber at $1310\mathrm{nm}$ wavelength with TE polarization. The spectral FWHM and backreflection are determined to be $58\mathrm{nm}$ and $-27\mathrm{dB}$, respectively.

© 2011 Optical Society of America

Compact grating couplers on silicon-on-insulator with reduced backreflection

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Compact efficient broadband grating coupler for silicon-on-insulator waveguides

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