Authors:	H. Becker, C.J. Krückel, D. Van Thourhout, M.J.R. Heck
Title:	Out-of-Plane Focusing Grating Couplers for Silicon Photonics Integration With Optical MRAM Technology
Format:	International Journal
Publication date:	8/2018
Journal/Conference/Book:	IEEE Journal on Selected Topics in Quantum Electronics
Volume(Issue):	26(2) p.1-8
DOI:	10.1109/JSTQE.2019.2933805
Citations:	6 (Dimensions.ai - last update: 1/3/2021) Look up on Google Scholar
Download:	(3MB)

Abstract

We present the design methodology and experimental characterization of compact out-of-plane focusing grating couplers for integration with magnetoresistive random access memory technology. Focusing grating couplers have recently found attention as layer-couplers for photonic-electronic integration. The components we demonstrate are designed for a wavelength of 1550 nm, fabricated in a standard 220nm SOI photonic platform and optimized given the fabrication restrictions for standard 193-nm UV lithography. For the first time, we extend the design based on the phase matching condition to a two-dimensional grating design with two optical input ports. We further present the experimental characterization of the focusing behaviour by spatially probing the emitted beam with a tapered-and-lensed fiber and demonstrate the polarization controlling capabilities of
the 2D FGCs.