总结了光放大器的一般原理和技术难点，分类评述了常用的EDFA监控方案的工作原理、特点和性能。

This paper summarizes the general principle and technical problems in optical fibre amplifier. The principle characteristics and functions of EDFA, which are commonly used in monitoring are described.

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干线放大器是移动通信网络的重要组成部分，我们主要论述了干放监控系统的软件结构设计方案。

Trunk amplifier is a important part of mobile communication network. We mainly discussed the design plan of the software and hardware architecture of the trunk amplified monitoring system.

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介绍一种实时监控行波半导体激光放大器(TW - SLA)抗反膜(AR)超低剩余反射率的新方法。

A new method of monitoring the in-situ extremely low residual reflectivity of antireflection (AR) coating of travelling-wave semiconductor laser amplifier (TW-SLA) is presented.

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