Open AccessSilicon cross-connect filters using microring resonator coupled multimode-interference-based waveguide crossings
Author(s) -
Fang Xu,
Andrew Poon
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.008649
Subject(s) - resonator , optics , crosstalk , waveguide , silicon on insulator , interference (communication) , optical filter , materials science , optoelectronics , physics , silicon , channel (broadcasting) , telecommunications , computer science
We report silicon cross-connect filters using microring resonator coupled multimode-interference (MMI) based waveguide crossings. Our experiments reveal that the MMI-based cross-connect filters impose lower crosstalk at the crossing than the conventional cross-connect filters using plain crossings, while offering a nearly symmetric resonance line shape in the drop-port transmission. As a proof-of-concept for cross-connection applications, we demonstrate on a silicon-on-insulator substrate (i) a 4-channel 1 x 4 linear-cascaded MMI-based cross-connect filter, and (ii) a 2-channel 2 x 2 array-cascaded MMI-based cross-connect filter.