Optical fiber exhibiting low guided acoustic Brillouin scattering (GAWBS) noise and measurement thereof
US12395244B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 1, 2021 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Jun 19, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/61
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Aspects of the present disclosure describe systems, methods. and structures in which guided acoustic Brillouin (GAWBS) noise is measured using a homodyne measurement technique and demonstrated using a number of optical fibers, such fibers being commonly used in contemporary optical communications systems. The measurements are made with single spans and determined to be consistent with separate multi-span long-distance measurements. Additionally, a technique for preparing an optical fiber exhibiting superior GAWBS noise characteristics by reducing coherence length of the optical fiber by spinning the fiber at a high rate during the drawing process such that birefringence coherence length is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.