Apparatus for compensating chromatic and polarization dispersion and frequency chirp in fiber optics and for pulse compression in laser systems
US5587827A · kind A · utility
Inventors
Key dates
| Filing date | Feb 1, 1995 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Feb 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2572
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Chromatic and polarization dispersion and transmitter frequency chirp are the dominant data rate limiting factors for high-speed, long distance communication systems. To overcome such limitations, a chromatic and polarization dispersion and frequency chirp compensator is utilized. The applicants provide a compensator by combining a wavelength to polarization transformer with a polarization to delay converter having a dispersion characteristic of substantially equivalent in magnitude, and opposite in sign, to the desired amount of dispersion and frequency chirp to be compensated. Optical gain may be incorporated in any of the elements of the compensator which makes the present invention a lightwave amplifier as well as a dispersion compensator. The present invention is also applicable as an optical pulse time compressor that compresses a relatively long width optical pulse to a short width pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.