Refractive index grating manufacturing process
US6532327B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2001 |
| Grant date | Mar 11, 2003 |
| Priority date | — |
| Expiry date | Sep 1, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for manufacturing an optical fiber refractive index grating. The method comprises the steps of, providing a substantially twist-free length of an optical fiber between a first spool and a second spool before attaching the first spool and the second spool to a support having a first surface opposite a second surface. The support and spools provide a filament organizer including the first spool as a lockable spool and the second spool as a rotary spool. The filament organizer further comprises a tensioner coupled to the rotary spool to apply tension to at least a central portion of the length of an optical fiber disposed between the lockable spool and the rotary spool. After removing a buffer coating from the central portion of an optical fiber and applying a controlled tension to the central portion of the optical fiber, changes are made to the refractive index characteristics of the central portion during exposure to an interference pattern of high intensity actinic radiation, to produce the refractive index grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.