Automated precision wavelength control for fiber optic Bragg grating writing
US6093927A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1997 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Jun 9, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02133
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a computer controlled apparatus and method for producing high quality fiber optic Bragg gratings. According to the invention, the apparatus (10) preferably includes a laser (12) for generating an ultraviolet beam (18), a rotatable prism (32) disposed downstream of the laser (12) for receiving the beam (18) and an optical fiber (48) disposed adjacent a bottom edge (84) of the prism (32) for receiving a high fringe frequency interferrogram (86) formed by the prism (32). The prism (32) is coupled to a rotation stage (14) for rotating the prism (32) about a pre-selected pivot point (36) relative to the angle of incidence of the beam (18) to vary the Bragg wavelength at the fiber core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.