Method for producing twisted optical fiber with reduced polarization mode dispersion
US7310974B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jan 9, 2004 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Aug 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02285
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for drawing an optical fiber having reduced polarization mode dispersion (PMD) draws an optical fiber from an optical fiber preform whose core ovality is at max about 3%, coats the optical fiber with acrylic polymer and twists the coated optical fiber with a pair of spinning wheels. The twisting of the fiber is achieved by four discrete spin rates that repeat in a periodic fashion after the drawing of certain lengths of the optical fiber. At least one of the spin rates varies in a trapezoidal manner along the respective one of drawn lengths of the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.