Optical amplifier and optical amplification method
US6952309B1 · kind B1 · utility
7Cited by
25References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2000 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Sep 22, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A optical filter has a loss spectrum whose gradient dL/dλ of a loss L (dB) with respect to the wavelength λ (nm) is variable in the wavelength band of multiplexed signal light. A control circuit detects each power of signal light components demultiplexed by an optical coupler and controls the power of optical pumping light to be supplied to an optical amplification section from an optical pumping light sources such that the power of output signal light has a predetermined target value. The control circuit also controls the gradient dL/dλ of the optical filter on the basis of powers of the signal light components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.