Optical fiber grating, optical fiber grating manufacturing method, and optical fiber grating manufacturing apparatus
US6819834B2 · kind B2 · utility
1Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Aug 15, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02185
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a method and apparatus that precisely and efficiently improves the optical properties of an optical fiber grating. Preferably hydrogen loading processing, grating formation processing that forms a grating part by irradiation with ultraviolet light at a predetermined period, and preferably dehydrogenation, adjusting the optical properties by a suitable combination of uniform ultraviolet irradiation processing that irradiates the grating part as a whole with ultraviolet light and heat trimming processing, and finally heat aging is carried out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.