WDM-PON中基于AWG的新型OVPN研究

A novel AWG-based optical virtual private network in WDM-passive optical networks

在波分复用无源光网络(WDM-PON)中,提出了一种基于阵列波导光栅(AWG)的新型光虚拟专用网(OVPN)。OVPN采用环形结构,在不同光网络单元(ONU)之间使用波长通道直接通信,不仅保证了ONU之间通信的安全性,而且提高了网络生存性。分别从光功率损耗和系统误码率(BER)进行了数值分析,结果表明,本文结构不仅增加了通信的安全性,而且仅使用4个波长就能实现16个ONU的相互联接,从而节省了波长资源,且具有很强的抗串扰能力。

We propose a novel optical virtual private network（OVPN） which is implemented by arrayed waveguide grating（AWG） in wavelength division multiplexing passive optical network （WDM-PON）. The OVPN uses a ring structure,in which optical network units（ONUs） communicate through wave- length channels directly. The OVPN improves the security and survivability of ONU communication. We also conduct numerical analysis of optical power loss and bit error rate（BER）. The results demonstrate that the OVPN not only enhances the communication security, but also realizes the connection among 16 ONUs using only 4 wavelengths, which saves wavelength resource,and strong ability of anti-crosstalk is achieved.