Method of manufacturing polarization-maintaining optical fiber coupler
US6463195B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | May 25, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2843
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a method of manufacturing a polarization-maintaining optical fiber coupler by heating lengthwise portions of two polarization-maintaining optical fibers extending side by side, and elongating the heated portions to thereby form a fused-elongated section, elongation is terminated when the cyclic changes in a coupling ratio of two polarized waves according to an elongation length at a wavelength in use are both within first two cycles, so that the coupling ratio of one of the polarized waves is equal to or less than 10% and the coupling ratio of the other one of the polarized waves is equal to or greater than 90%. This method can provide a polarization-maintaining optical fiber coupler whose coupling ratio has a large dependency on polarization with a short elongation length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.