Filtering optical fiber having a modified photosensitivity profile
US6314221A · kind A · utility
15Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Jun 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02119
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
It is shown that by modifying the photosensitivity profile it is possible to provide better adjustment of the characteristic curve of a filter, and in particular to eliminate a reflection peak that is present within the working band. The photosensitivity profile is inverted to a considerable extent. In practice, the core of the fiber has only 20% of photosensitive doping material compared with the quantity of photosensitive doping material present in the cladding of the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.