Proposal for Fabrication-tolerant Soi Polarization Splitter-rotator …
A novel silicon-on-insulator (SOI) polarization splitter-rotator (PSR) with a large fabrication tolerance is proposed based on cascaded multimode interference (MMI) couplers and an assisted mode-evolution taper. The tapers are designed to adiabatically convert the input TM 0 mode into the TE 1 mode, which will output as the TE 0 mode after processed by …