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Authors: J. Brouckaert, W. Bogaerts, S. Selvaraja, P. Dumon, R. Baets, D. Van Thourhout
Title: Planar Concave Grating Demultiplexer with High Reflective Bragg Reflector Facets
Format: International Journal
Publication date: 2/2008
Journal/Conference/Book: Photonics Technology Letters
Editor/Publisher: IEEE, 
Volume(Issue): 20(4) p.309-311
DOI: 10.1109/lpt.2007.915585
Citations: 108 (Dimensions.ai - last update: 6/10/2024)
81 (OpenCitations - last update: 3/5/2024)
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Abstract

We present measurement results of an ultracompact 4-channel silicon-on-insulator planar concave grating (PCG) demultiplexer fabricated in a complimentary metal-oxide semiconductor (CMOS)-line using deep-ultraviolet lithography. The demultiplexer has 4 output channels separated by 20nm and a footprint of only 280ƒÊm ~ 150ƒÊm. The crosstalk is better than -25dB and the on-chip loss is drastically reduced down to 1.9dB by replacing each facet by a second order Bragg reflector.

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