title: Polarization rotator-splitters in standard active silicon photonics platforms.
abstract: We demonstrate various silicon-on-insulator polarization management structures based on a polarization rotator-splitter that uses a bi-level taper TM0-TE1 mode converter. The designs are fully compatible with standard active silicon photonics platforms with no new levels required and were implemented in the IME baseline and IME-OpSIS silicon photonics processes. We demonstrate a polarization rotator-splitter with polarization crosstalk < -13 dB over a bandwidth of 50 nm. Then, we improve the crosstalk to < -22 dB over a bandwidth of 80 nm by integrating the polarization rotator-splitter with directional coupler polarization filters. Finally, we demonstrate a polarization controller by integrating the polarization rotator-splitters with directional couplers, thermal tuners, and PIN diode phase shifters.
authors.forename: Wesley D
authors.initials: WD
authors.lastname: Sacher
authors.forename: Tymon
authors.initials: T
authors.lastname: Barwicz
authors.forename: Benjamin J F
authors.initials: BJ
authors.lastname: Taylor
authors.forename: Joyce K S
authors.initials: JK
authors.lastname: Poon