Optical amplification
US4923291A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Jul 15, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2914
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical amplification method or system for an optical communication system which transmits signal light from the transmitting side to the receiving side via an optical transmission medium formed by an optical fiber or space. In accordance with the present invention, the signal light entered a certain state of polarization in at least one part of the transmitting side, the receiving side and the optical transmission medium is separated into two orthogonal polarized waves by a polarizing beam coupler/splitter. The two polarized waves are amplified by optical amplifiers disposed in correspondence to their state of polarization, respectively. The amplified orthogonal polarized waves are combined together by another polarizing beam coupler/splitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.