Optical amplifier arrangement having a variably settable attenuator
US6768579B2 · kind B2 · utility
4Cited by
10References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2001 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Aug 20, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical amplifier arrangement having at least one optical amplifier stage (V1, V2) and a variably settable attenuator (VDL), whose attenuation spectrum (DV2, DV3, DV5, DV6) assumes an attenuation profile (DV2, DV3, DV5, DV6) that increases or decreases proportionally to wavelength. To reduce tilt of the channel level spectrum of an optical transmission signal, the profile of the attenuation spectrum (DV2, DV3, DV5, DV6) is variably settable. An advantageous structure of the variably settable attenuator according to the invention is furthermore specified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.