Apparatus and method for controlled generation of polarization mode dispersion
US6377719B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Mar 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/274
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarization-mode-dispersion emulator in accordance with the principles of the present invention includes a plurality of PMD-generating stages aligned in cascade so as to form a clear light-path through the stage concatenation. Each PMD-generating stage includes an optical birefringent crystal or crystals for the purpose of imparting differential group delay and a polarization-rotating plate such as a half-wave waveplate for the purpose of imparting state-of-polarization rotation from one PMD-generating stage to the next. The polarization-rotating plates are mounted to rotation apparatuses and a controller coordinates the relative rotation of each waveplate for the purpose of generating PMD in a controlled manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.