Device for providing polarized light
US6973223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2001 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Sep 10, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2551
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a device (100) for continuously varying the extinction ratio, ER, a laser diode (102) is connected to a first end of a PZ fiber (108). At a second end, the PZ fiber is connected to a connector (110). At the other end of the connector a PM fiber (106) is connected. The two fibers meet in the connector, which means that opposite end facets of the fibers are located at a very close distance of each other. A rotation is produced by a rotator (104), mechanically coupled to the connector. The device can be used for: selecting a desired ER of the PM fiber; achieving high accuracy of angular alignment between the principal axes of two PM fibers (106, 506); evaluating the quality of angular alignment of a splice between two PM fibers made by a splicer; and setting the adjustment/calibration of a PM fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.