Wide-band optical fiber amplifier and amplifying method thereof
US6437907B1 · kind B1 · utility
28Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Jul 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/294
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for amplifying the optical signals of a C-band (1550 nm wavelength band) and a L-band (1580 nm wavelength band) in a wide-band optical fiber amplifier, wherein the incoming optical signals are separated into the 1550 nm wavelength band and the 1580 nm wavelength band by a WVDM optical coupler and respectively amplified by a C-band EDFA and a L-band EDFA A backward ASE generated by the C-band EDFA is fed back to the L-band EDFA by a circulator as a supplementary pumping light to the amplification of the optical signals of the 1580 nm wavelength band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.