Method for fabrication of an all fiber polarization retardation device
US6535654B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1998 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Dec 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2766
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In many optics applications, it is desirable to retard the polarization of a light wave, i.e., to change the polarization state of a light wave. In a method for retarding polarization of a light wave, a first linear polarization-maintaining fiber having a first beat length is spliced to a second polarization-maintaining fiber having a high birefringence and a second beat length. The second fiber is then cleaved to a length which is a fraction of the second beat length. The first fiber and the second fiber may be secured in a removable or permanent capillary. A light wave is transmitted into the first fiber and the polarization state of the light wave is determined. To adjust the polarization state, the second fiber may be lapped against an abrasive substance. The second fiber may be repeatedly lapped until a desired polarization state is achieved. In an alternate method, a first linear polarization-maintaining fiber is spliced to a second polarization-maintaining fiber having a high birefringence and a beat length. The second fiber is cleaved to a length which is a fraction of the beat length and a third fiber is spliced to the second fiber. A light wave is transmitted through the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.