Silicon-waveguide-based broadband polarization splitter-rotator
US9915781B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2017 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Mar 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12097
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide-based polarization splitter-rotator (PSR) includes a converter with tapered rib-structure configured to convert TM0/TE0 polarization mode of an input light to a TE1/TE0 mode, a splitter coupled to the first plane for splitting the input light evenly to a first wave at a first port and a second wave at a second port. Furthermore, the PSR includes a phase shifter having a first arm coupled to first port and a second arm coupled to the second port. The first arm guides the first wave to a third port with no phase shift while the second arm adds 90 or 270 degrees to the second wave. The PSR also includes a 2×2 MMI coupler for coupling the first wave and the second wave to output a first output light in TE0 mode exclusively from TM0 mode and a second output light in TE0 mode exclusively from TE0 mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.