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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。
In Wavelength Division Multiplexing Passive Optical Network (WDM-PON), a novel Optical Virtual Private Network (OVPN) based on Arrayed Waveguide Grating (AWG) is proposed. The OVPN adopts a ring structure and uses wavelength channels to communicate directly with different optical network units (ONUs), which not only ensures the communication between ONUs but also improves network survivability. The numerical analysis of the optical power loss and the system BER respectively shows that the proposed architecture not only increases the security of the communication, but also enables the interconnection of 16 ONUs with only 4 wavelengths, thus saving Wavelength resources, and has a strong anti-crosstalk ability.