High gain multi-mode optical amplifier
US5187759A · kind A · utility
57Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1991 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Nov 7, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094069
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Indiscriminately exciting the modes of a multi-mode optical fiber amplifier is avoided by an optical fiber amplifier design in which the excitation of pump modes in the core of a multi-mode fiber is controlled by controlling the pump light launching. The pump light is directed substantially along the center axis of a multi-mode fiber within a predetermined launch angle. Rather than exciting all modes, only lower order modes are affected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.