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Authors: T. Spuesens, S. Pathak, M. Vanslembrouck, P. Dumon, W. Bogaerts
Title: Grating Coupler with Integrated Power Splitter for High-Intensity Optical Power Distribution
Format: International Journal
Publication date: 2/2016
Journal/Conference/Book: Photonics Technology Letters
Volume(Issue): 28(11) p.1173-1176
DOI: 10.1109/LPT.2016.2533666
Citations: 9 (Web of Knowledge / Dimensions.ai - last update: 27/9/2020)
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Abstract

In this letter, we present a fiber grating coupler with an integrated 16-way power splitter. The incoming light from the fiber is split immediately over 16 channels, and therefore, the total optical power is never confined in a single waveguide. This is of particular interest for silicon photonics platforms, because, here, high optical intensities can cause significant non-linear losses. The device has a total coupling efficiency that is similar to standard focusing grating couplers. Furthermore, a channel non-uniformity below 1.1 dB has been obtained. By studying the alignment sensitivity, we found that for high splitting uniformity, a careful positioning of the fiber is necessary. We also experimentally demonstrate that this device is indeed capable of handling high optical powers without introducing additional non-linear losses.

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