Compact Waveguide Splitter Networks

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Permanent URL	http://hdl.lib.byu.edu/1877/2150
Title	Compact Waveguide Splitter Networks
BYU Creator	Kim, Seunghyun Nordin, Gregory P.
Creator	Hu, Weisheng Qian, Yusheng Song, Jiguo
Keywords	integrated optics; beam splitters; total internal reflection; waveguides; components; photonic integrated circuits
Description/Abstract	We demonstrate compact waveguide splitter networks in siliconon-insulator (SOI) rib waveguides using trench-based splitters (TBSs) and bends (TBBs). Rather than a 90° geometry, we use 105° TBSs to facilitate reliable fabrication of high aspect ratio trenches suitable for 50/50 splitting when filled with SU8. Three dimensional (3D) finite difference time domain (FDTD) simulation is used for splitter and bend design. Measured TBB and TBS optical efficiencies are 84% and 68%, respectively. Compact 105° 1 x 4, 1 x 8, and 1 x 32 trench-based splitter networks (TBSNs) are demonstrated. The measured total optical loss of the 1 x 32 TBSN is 9.15 dB. Its size is only 700 μm x 1600 μm for an output waveguide spacing of 50 μm.
Source	Y. Qian, J. Song, S. Kim, W. Hu, G. P. Nordin, "Compact waveguide splitter networks" Optics Express 16(7), pp. 4981-4990 (2008). http://www.opticsexpress.org/abstract.cfm?id=156939.;
Publisher	Optical Society of America
Date Original	2008
Date Digital	2010-03-03
Language	English eng en
Publication Type	Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	Ira A. Fulton College of Engineering and Technology
BYU Department	Electrical and Computer Engineering
Copyright Status	(c) 2008 Optical Society of America;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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Compact Waveguide Splitter Networks

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