Design of an ultra-broadband silicon mode (de)multiplexer

We propose a low-crosstalk and broadband mode (de)multiplexer. It is designed by cascading mode (de)interleavers utilizing silicon waveguide asymmetric Y-junctions. Asymmetric Y-junctions of each stage are modular. For each asymmetric Y-junction, the even (odd) modes of the stem separated from the o...

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Bibliographic Details
Published in:Optics communications 2016-03, Vol.363, p.7-12
Main Authors: Chen, Weiwei, Wang, Pengjun, Zhang, Yawei, Yang, Jianyi
Format: Article
Language:English
Subjects:
Integrated Optics
Multiplexing
Waveguide
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Summary:We propose a low-crosstalk and broadband mode (de)multiplexer. It is designed by cascading mode (de)interleavers utilizing silicon waveguide asymmetric Y-junctions. Asymmetric Y-junctions of each stage are modular. For each asymmetric Y-junction, the even (odd) modes of the stem separated from the odd (even) modes evolve into the low-order modes of the wide (narrow) arm by controlling the widths of the two arms, and vice versa. A four-channel mode (de)multiplexer for TE polarization is analyzed as an example. Simulations show the four-channel mode (de)multiplexer pair has a low crosstalk (
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2015.10.066