Polarization-combining fused-fiber optical coupler and method of producing the same
US6643433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2002 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2835
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarization-combining fused-fiber optical coupler is made of polarization maintaining (PM) fibers spliced to non-birefringent single mode (SM) fibers which are fused and drawn near the splicing to form a coupler with an adiabatic tapered profile. The linearly polarized light injected into PM fibers travels through the coupler where the power of the two polarizations is combined and transmitted to one output fiber. The method for producing such coupler involves splicing a pair of PM fibers to a pair of SM fibers, then injecting linearly polarized light into each PM fiber and fusing and drawing SM fibers to form an adiabatic coupler with maximum power transmission at a desired wavelength going to only one output fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.