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融入防火功能的无源接入网

RAO Yun-jiang, BU Chong,RAN Zeng-ling

Dianzi Keji Daxue Xuebao/Journal of the University of Electronic Science and Technology of China（2011）

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Abstract
提出一种融入防火功能的无源光接入网架构.该架构利用中心波长一致的低反射率先纤布拉格光栅(FBG)作为温度传感器,将温度传感信号融入现有的以太无源光网络(EPON)商用系统中(不改变EPON构架),并使用光时域反射计(OTDR)技术定位温度升高的FBG.该架构对通信信号的光功率和畸变几乎没有影响且构架中多个FBG温度传感器中心波长一致,不需要复杂且昂贵的FBG波长解调技术,占用通信带宽小,能以较低的成本实现准分布式火警预报,拥有很好的应用前景,从而为运营商提供增值服务.
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Key words
EPON,Fiber Bragg grating,Fire alarming,OTDR,PON
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