Open AccessUltra-low crosstalk, CMOS compatible waveguide crossings for densely integrated photonic interconnection networks
Author(s) -
Adam M. Jones,
Christopher T. DeRose,
Anthony L. Lentine,
Douglas C. Trotter,
Andrew Starbuck,
Robert A. Norwood
Publication year - 2013
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.21.012002
Subject(s) - crosstalk , waveguide , silicon photonics , interconnection , photonics , cmos , silicon on insulator , materials science , optics , optoelectronics , photonic integrated circuit , optical interconnect , silicon , physics , telecommunications , computer science
We explore the design space for optimizing CMOS compatible waveguide crossings on a silicon photonics platform. This paper presents simulated and experimental excess loss and crosstalk suppression data for vertically integrated silicon nitride over silicon-on-insulator waveguide crossings. Experimental results show crosstalk suppression exceeding -49/-44 dB with simulation results as low as -65/-60 dB for the TE/TM mode in a waveguide crossing with a 410 nm vertical gap.