Method for monitoring spin imparted on optical fiber and method for making optical fiber by using the same
US7263263B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jul 29, 2003 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | May 30, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2205/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for monitoring a spin imparted on an optical fiber in order to reduce Polarization Mode Dispersion (PMD) includes the steps of imparting a spin on a high-temperature optical fiber which is drawn from a preform, photographing a dispersion pattern peculiar to the spun optical fiber with a camera from scattered light naturally generated by the spin imparted on the optical fiber, and displaying the photographed dispersion pattern. The method enables monitoring of rate and period of the spin imparted on the optical fiber on the basis of the displayed dispersion pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.