摘要
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光纤布拉格光栅(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。
A novel passive optical access network with fire alarming services is proposed in this paper. The architecture uses the fiber Bragg gratings （FBGs） with the same central wavelength and low reflectivity as sensors. Sensing signals are integrated into the Ethernet psssive optical network （EPON） system without changing its architecture. In addition, the optical time domain reflectometer （OTDR） technology us used to position. This architecture has almost no impact on the power and the distortion of the optical communication signals. By using FBGs with the same central wavelength, complex and expensive FBG＇s wavelength demodulation technology is not necessary.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2011年第6期869-872,共4页
Journal of University of Electronic Science and Technology of China
基金
国家863项目(2007AA01Z245)
