Polarization mode dispersion compensation
US6515778B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1999 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jul 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29398
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus and a method for compensating for polarisation mode dispersion in an optical signal. The apparatus includes a chirped Bragg reflector extending longitudinally along an optical waveguide, the waveguide being susceptible to stress birefringence; and at least one tuning element located at a position along the length of the waveguide. The tuning element is operable to, in use, apply a stress to the waveguide so as to alter the magnitude and the orientation of the birefringence of the waveguide for compensation of the polarisation mode dispersion of the optical signal. Higher order PMD compensation can be achieved by providing two such tuning elements along the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.