Optical signal amplifier and optical signal amplifying system

Abstract

The invention provides an optical signal amplifier and an optical signal amplifying system. The optical signal amplifier comprises a first coupler, a second coupler and a first pump light source, wherein the first coupler and the second coupler are connected through a first erbium-doped fiber; a first optical amplification channel is formed by the first erbium-doped fiber; the first pump light source is used for generating a first pump light; the first pump light source is connected with the first coupler; the first pump light and a signal light enter the first erbium-doped fiber through the first coupler; and the first erbium-doped fiber comprises at least two fiber sections; and in each fiber section, the erbium doping concentration changes with the extension of the fiber section in the optical axis direction. According to the invention, the erbium-doped fiber is in a space intermittent working mode, and a micro multi-stage cascade effect is generated in space, so that in the system energy transfer process, traditional one-time transformation is changed into multiple-time progressive transfer, the reaction time domain of burst optical waves is extended, and the problem caused by time delay in the inter-energy-level energy transfer process is improved.

Description

technical field [0001] The invention relates to optical signal processing, in particular to an optical signal amplifier and an optical signal amplification system. Background technique [0002] A new generation of communication networks such as EPon (Ethernet Passive Optical Network, Ethernet Passive Optical Network), GPon (Gigabit-Capable Passive Optical Network, Gbit Passive Optical Network) and other optical fiber communication networks use burst optical signals in whole or in part. Mode, that is, the use of discontinuous, bursty, wave-packet optical signals with a time width as small as nS level. [0003] In the optical network, in order to solve the limitation of attenuation on the transmission rate and distance of the optical network, an optical signal amplifier is generally installed in the optical network to compensate for the transmission loss of the optical fiber and extend the transmission distance. [0004] The optical signal amplifiers in the optical communicat...

AI Technical Summary

Problems solved by technology

[0004] The optical signal amplifiers in the optical communication network in the prior art are all based on continuous optical signal technology, whether it is Erbium-doped fiber amplifier (EDFA), Raman fiber amplifier (RFA) or semiconductor optical amplifier (SOA), in the burst signal In this mode, the front and rear edges of the signal cannot be correctly tracked and run in time, and it cannot work normally, so that the effective amplification output of the discontinuous optical signal cannot be completed, and it cannot be applied to the new generation of optical fiber communication network

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