Method for selective photosensitization of optical fiber
US6763686B2 · kind B2 · utility
19Cited by
32References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jul 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02185
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for increasing the photosensitivity of a selected portion of an optical fiber and for producing a grating in the selected portion of an optical fiber. The method includes the step of placing the selected portion of the optical fiber in a hydrogen containing atmosphere. The volume of the hydrogen-containing atmosphere immediately surrounding only the selected portion of the optical fiber is heated to a temperature of at least 250° C. Only the selected portion of the optical fiber is exposed to the heated volume of the hydrogen-containing atmosphere at a temperature of at least 250° C. for a predetermined time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.