Method for the manufacture of optical gratings
US5773486A · kind A · utility
25Cited by
13References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/02161
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The specification describes techniques for the manufacture of optical gratings in optical fibers. The grating pattern is written into the core of the fiber without removing the fiber coating. Coating compositions with high transparency to the actinic (writing) radiation but which are UV curable are described in detail. The coating compositions contain a UV photoinitiator that absorbs sufficient UV radiation to effectively cure the polymer but is relatively transparent to UV radiation used for writing the grating. The photoinitiator is one or more compounds selected from a specified group of aliphatic and cycloaliphatic ketones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.