Optical fibre with reduced polarization mode dispersion and method for obtaining an optical fibre with reduced polarization mode dispersion
US6920270B2 · kind B2 · utility
3Cited by
5References
28Claims
0Family size
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Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Aug 18, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2205/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for determining at least one parameter of a periodic spin function α(z) with period p, to be applied to an optical fiber along its length z during a drawing process. At least one parameter is selected so that (I) where ε1 is about 0.05 and y1 is the first of the three components y1(z), y2(z), y3(z) of a periodic function y(z) of period p such that (II) where LB is an expected beat length of said optical fiber and α(z) is the derivative of the spin function α(z) with respect to the length z. The method is effective for substantially reducing the PMD of optical fibers drawn when applying a spin function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.