Process for manufacturing a microstructured optical fibre and method and system for on-line control of a microstructured optical fibre
US8089619B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2008 |
| Grant date | Jan 3, 2012 |
| Priority date | — |
| Expiry date | Sep 19, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2205/91
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A manufacturing process of a microstructured optical fiber including a void-containing region, includes the steps of: drawing a microstructured optical fiber along a longitudinal direction from a heated preform, wherein the optical fiber is continuously advanced along the longitudinal direction; directing a radiation beam at a longitudinal position in the longitudinal direction of the optical fiber so as to produce an interference pattern; detecting the interference pattern and producing at least one electrical detection signal corresponding to the interference pattern and including a plurality of signal fringe cycles; feeding the first detection signal into a first counter circuit; determining a first number of interference fringe increments in the plurality of signal wave fringe cycles of the at least one detection signal by using the first counter circuit; determining the outer diameter of the optical fiber, and controlling the microstructure of the optical fiber during advancement of the optical fiber. The step of controlling includes at least one step selected from: (a) controlling the first number of interference fringe increments within a reference number range of reference …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.