Methods and apparatus for frequency shifting polarization mode dispersion spectra
US6891674B2 · kind B2 · utility
10Cited by
20References
57Claims
0Family size
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Key dates
| Filing date | Dec 7, 2001 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Apr 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2569
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarization mode dispersion generator for generating polarization mode dispersion (“PMD”) spectra is provided. The generator includes a plurality of birefringent stages, each stage including a differential group delay (“DGD”) element and a phase-shifting element. The generator is capable of inducing an amount of polarization mode-mixing between at least one adjacent pair of stages. The shape of a PMD spectrum can be preserved while frequency shifting the spectrum in either direction. Alternatively, the shape of the PMD spectrum can be changed without frequency shifting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.