Optical communication system comprising a fiber amplifier
US5074633A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1990 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Aug 3, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/06745
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an optical communication system comprising at least two optical fibers of dissimilar core sizes, joined by a fusion splice. In one embodiment, the larger-core fiber is a communication fiber, and the smaller-core fiber is an erbium-doped amplifier fiber. A taper region is included adjacent the splice. The diameter of the smaller-core fiber increases within the taper region as the splice is approached along the smaller-core fiber. The taper region is substantially free of constrictions. As a consequence of the taper region, the optical losses associated with the splice are relatively low, even when there is relatively high mismatch between the mode field diameters (at a signal wavelength) in the respective fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.