Title:
OPTICAL FIBER, OPTICAL AMPLIFIER AND OPTICAL COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/204006
Kind Code:
A1
Abstract:
An optical fiber, an optical amplifier and an optical communication system, which are used for solving the problem in the prior art that noise is increased when gain flattening is carried out on an optical amplifier. In the present application, the optical fiber can be used for the optical amplifier and comprises: a fiber core doped with rare earth and a cladding. The fiber core comprises a gain equalization unit, and is used for respectively amplifying optical signals of all wavelengths in a received combined wave; the gain equalization unit is used for equalizing gains of the optical signals of all wavelengths, so that the gains of the optical signals of all wavelengths emitted from an outgoing port of the optical fiber are in a preset range; and the gain of optical signals of each wavelength in the optical signals of all wavelengths is determined according to the ratio of the power of the amplified optical signals to the power of the optical signals before amplification. Namely, when the optical signals amplified by the fiber core doped with rare earth are transmitted to the gain equalization unit, the gain equalization unit can equalize (i.e., flatten) the gains of the optical signals of all wavelengths, thus achieving gain equalization of optical signals without increasing noise.
Inventors:
WU BO (CN)
ZHANG KAI (CN)
ZHANG KAI (CN)
Application Number:
PCT/CN2021/083637
Publication Date:
October 14, 2021
Filing Date:
March 29, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01S3/067; G02B6/02
Foreign References:
| CN1266995A | 2000-09-20 | |||
| JP2016167489A | 2016-09-15 | |||
| US5703978A | 1997-12-30 | |||
| CN202010277671A | 2020-04-08 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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