Balanced gain flattening filters
US6445493B1 · kind B1 · utility
8Cited by
6References
61Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1999 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Oct 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Compound gain flattening filters of optical amplification include a series of filter components with spectral responses that are combined to approach a target loss spectrum. Small variations in the central wavelengths of the component responses can produce large errors in the combined response of the compound gain flattening filter. However, the components can be divided into sub-components with balanced central wavelength deviations to achieve the desired response goals despite exhibiting otherwise detrimental wavelength deviations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.