Semiconductor optical amplifier having a non-uniform injection current density
US7359113B2 · kind B2 · utility
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17References
15Claims
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Key dates
| Filing date | Feb 2, 2006 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Feb 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/176
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor optical amplifier (SOA) with efficient current injection is described. Injection current density is controlled to be higher in some areas and lower in others to provide, e.g., improved saturation power and/or noise figure. Controlled injection current can be accomplished by varying the resistivity of the current injection electrode. This, in turn, can be accomplished by patterning openings in the dielectric layer above the current injection metallization in a manner which varies the series resistance along the length of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.