A.J. Millan Mejia, Y. Jiao, J.J.G.M. van der Tol & M.K. Smit
Proceedings of the 21st Annual Symposium of the IEEE Photonics Society Benelux Chapter, 17-18 November 2016, Universiteit Gent, Ghent, Belgium.
Publication year: 2016


In membrane photonic integration technologies, grating couplers are widely used to couple light from the photonic circuit and optical fibres. Hereby we present the design of a novel deep etched focusing subwavelength grating with a metallic reflector. This device is optimized for the InP membrane on silicon (IMOS) platform. The simulated
coupling to a fibre efficiency is as high as 76 %, with the fibre tilted 10° from the grating normal. The use of a metal reflector make the performance of the device independent of the underlying layer stack, providing flexibility to the platform.

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