Methods and apparatus for generation and control of coherent polarization mode dispersion
US6867918B2 · kind B2 · utility
13Cited by
21References
76Claims
0Family size
Inventor
Key dates
| Filing date | Dec 7, 2001 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Aug 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2569
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Methods and apparatus for coherent PMD generation are provided. A PMD generator can include at least four birefringent stages in optical series, thereby forming at least three pairs of adjacent stages. Each of the stages includes a harmonic differential group delay element and a phase-compensating element. The generator can be made colorless (i.e., made to have the same PMD at each WDM channel) and can be operated such that DGD and second order PMD can be independently generated and controlled. These PMD generators can be used in PMD compensators and PMD emulators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.