Method of gain and noise figure equalization for simultaneous optical splitter/amplifier
US6317256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2000 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Feb 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method (100) and process (120) for extending the optical bandwidth of an optical signal splitter/amplifier (160) that includes optical amplifier material and an multi-mode interference splitter. A wider bandwidth is obtained by equalizing both the gain and noise figures for the splitter/amplifier (160) as a function of the perfect focus wavelength of the splitter and the amplified spontaneous emission spectra of the gain material. The peak wavelength of the semiconductor optical amplifier material is offset a distance from the perfect focus wavelength so that the net gain of the splitter/amplifier (160) is the semiconductor gain multiplied by the insertion loss of the splitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.