A Simple WDM-PON Architecture Together With Private Interconnected ONUs

Chien-Hung Yeh,Han-Shin Ko,Wei-Hung Hsu,Bo-Yin Wang,Li-Hung Liu

doi:10.1109/access.2021.3110729

Chien-Hung Yeh, Han-Shin Ko + Show 3 more

Open Access

https://doi.org/10.1109/access.2021.3110729

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Abstract

In this paper, we present and investigate a wavelength-division-multiplexing passive optical network (WDM-PON) with symmetrical 28 Gbit/s on-off keying (OOK) access signals and 3 Gbit/s virtual private network (VPN) link between the optical network units (ONUs) simultaneously. To achieve the VPN connection, a ring-based network architecture is designed to link every ONU. Here, a direct modulation laser diode (LD) of 1311.6 nm wavelength is applied in ONU for VPN transmission to separate from PON network. In the investigation, the fiber and free space optical communication (FSO) based connections are also exploited to connect every ONU. In addition, the corresponding signal behaviors of WDM-PON and VPN networks are also analyzed and discussed.

Highlights

In order to achieve and support the multi-service of artificial intelligence (AI), big data, cloud access, video on demand, 4K/8K video, online gaming, and 5G/6G wireless mobile, the passive optical network (PON) system would be the potential choice in the last mile access for end-user [1, 2]
We propose and investigate a new virtual private network (VPN) scheme, which can be integrated in original wavelength-division-multiplexing passive optical network (WDM-PON) for proof of concept
In the PON, we design a ring-based fiber connection to link every optical network units (ONUs) for providing interconnection simultaneously

Summary

INTRODUCTION

In order to achieve and support the multi-service of artificial intelligence (AI), big data, cloud access, video on demand, 4K/8K video, online gaming, and 5G/6G wireless mobile, the passive optical network (PON) system would be the potential choice in the last mile access for end-user [1, 2]. The usual WDM-PON system cannot support the direct signal connection between the ONUs. the inter-ONU data link in the PON network needs to be connected to the OLT and reflected to ONUs through the arranging and routing process in the media access control (MAC) [11]. The inter-ONU data link in the PON network needs to be connected to the OLT and reflected to ONUs through the arranging and routing process in the media access control (MAC) [11] This mechanism would result in the information delay in VPN link, congestion of signal process at the OLT and bandwidth consumption of downstream and upstream signals. The VPN signal among the ONUs can reach 3 Gbit/s OOK direct modulation after 26 km SMF link without any amplification

EXPERIMENT AND RESULTS

PD 1 LDinter

CONCLUSION