Apparatus comprising an optical gain device, and method of producing the device
US5039190A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1990 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Sep 7, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1608
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is apparatus comprising an optically pumped optical gain device that comprises a rare earth (RE)-doped planar waveguide with non-uniform dopant distribution in the core of the waveguide. The RE ions are advantageously distributed such that the ions are concentrated in a core region in which the mode intensity of both signal radiation and pump radiation is relatively high. In preferred embodiments of a single mode planar waveguide according to the invention the RE ions are substantially concentrated in the central core region. A method of making the disclosed apparatus is also disclosed. The method involves implantation of RE ions into the core region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.