Open AccessPolarization rotator-splitters and controllers in a Si_3N_4-on-SOI integrated photonics platform
Author(s) -
Wesley D. Sacher,
Ying Huang,
Ding Liu,
Tymon Barwicz,
Jared C. Mikkelsen,
B. J. Taylor,
GuoQiang Lo,
Joyce K. S. Poon
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.011167
Subject(s) - silicon on insulator , materials science , polarization (electrochemistry) , optics , polarization rotator , polarization controller , optoelectronics , silicon photonics , silicon , silicon nitride , power dividers and directional couplers , insertion loss , photonics , broadband , birefringence , physics , chemistry , wavelength , fiber laser
We demonstrate novel polarization management devices in a custom-designed silicon nitride (Si(3)N(4)) on silicon-on-insulator (SOI) integrated photonics platform. In the platform, Si(3)N(4) waveguides are defined atop silicon waveguides. A broadband polarization rotator-splitter using a TM0-TE1 mode converter in a composite Si(3)N(4)-silicon waveguide is demonstrated. The polarization crosstalk, insertion loss, and polarization dependent loss are less than -19 dB, 1.5 dB, and 1.0 dB, respectively, over a bandwidth of 80 nm. A polarization controller composed of polarization rotator-splitters, multimode interference couplers, and thin film heaters is also demonstrated.