Methods and systems for reducing polarization dependent loss
US8676003B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 27, 2010 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Feb 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photonics integrated circuit for processing radiation includes a first-dimensional grating coupler for coupling in radiation, a second two-dimensional grating coupler for coupling out radiation and a waveguide structure having two distinct waveguide arms for splitting radiation received from the first grating coupler and recombining radiation in the second grating coupler. A phase shifting means furthermore is provided for inducing an additional phase shift in at least one of the two distinct waveguide arms thereby inducing a relative phase shift of π between the two distinct waveguide arms so as to provide a TE/TM polarization switch for radiation between the first grating coupler and the second grating coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.