TWC and AWG based optical switching structure for OVPN in WDM-PON

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• 作者：Hui-feng Bai ; Yu-xin Chen ; Qin Wang
• 刊名：Optoelectronics Letters
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：11
• 期：2
• 页码：130-133
• 全文大小：465 KB
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• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Applied Optics, Optoelectronics and Optical Devices
  Chinese Library of Science
  
• 出版者：Tianjin University of Technology, co-published with Springer-Verlag GmbH
• ISSN：1993-5013

文摘

With the rapid development of optical elements with large capacity and high speed, the network architecture is of great importance in determing the performance of wavelength division multiplexing passive optical network (WDM-PON). This paper proposes a switching structure based on the tunable wavelength converter (TWC) and the arrayed-waveguide grating (AWG) for WDM-PON, in order to provide the function of opitcal virtual private network (OVPN). Using the tunable wavelength converter technology, this switch structure is designed and works between the optical line terminal (OLT) and optical network units (ONUs) in the WDM-PON system. Moreover, the wavelength assignment of upstream/downstream can be realized and direct communication between ONUs is also allowed by privite wavelength channel. Simulation results show that the proposed TWC and AWG based switching structure is able to achieve OVPN function and to gain better performances in terms of bite error rate (BER) and time delay.