Open AccessSub-wavelength grating-assisted polarization splitter-rotators for silicon-on-insulator platforms
Author(s) -
Minglei Ma,
Anthony H. K. Park,
Yun Wang,
Hossam Shoman,
Fan Zhang,
Nicolas A. F. Jaeger,
Lukas Chrostowski
Publication year - 2019
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.27.017581
Subject(s) - optics , grating , lithography , silicon on insulator , splitter , broadband , polarization (electrochemistry) , diffraction grating , physics , power dividers and directional couplers , wavelength , beam splitter , fabrication , optoelectronics , materials science , silicon , laser , medicine , chemistry , alternative medicine , pathology
We propose and demonstrate broadband, entirely mode-evolution-based, polarization splitter-rotators (PSR) using sub-wavelength grating (SWG) assisted adiabatic waveguides for two SOI platforms. Our PSRs are more compact than previously demonstrated entirely mode-evolution-based designs. The devices were fabricated using two fabrication processes and, in both cases, the measured spectra show close matches to the simulation results. One of the processes uses standard optical lithography and, hence, this is the first time that an SWG-based PSR has been experimentally implemented using such a process. Finally, measurements for arbitrary input polarizations on an active, automated polarization receiver, that uses one of our PSRs, are also presented.