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Wide Bandwidth Silicon Nitride Grating Coupler

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4 Author(s)
Doerr, C.R. ; Bell Labs., Alcatel-Lucent, Holmdel, NJ, USA ; Chen, Long ; Young-Kai Chen ; Buhl, L.L.

We demonstrate a one-dimensional grating coupler in silicon nitride with a 67-nm 1-dB bandwidth, the largest reported for a grating coupler butt-coupled to standard single-mode fiber. The peak coupling efficiency is -4.2dB. It requires no partial etch and requires only 0.6-μm fabrication resolution.

Published in:

Photonics Technology Letters, IEEE  (Volume:22 ,  Issue: 19 )