All-optical virtual private network system in OFDM based long-reach PON using RSOA re-modulation technique

Chang Hun Kim, Sang Min Jung, Su Min Kang, Sang Kook Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We propose an all-optical virtual private network (VPN) system in an orthogonal frequency division multiplexing (OFDM) based long reach PON (LR-PON). In the optical access network field, technologies based on fundamental upstream (U/S) and downstream (D/S) have been actively researched to accommodate explosion of data capacity. However, data transmission among the end users which is arisen from cloud computing, file-sharing and interactive game takes a large weight inside of internet traffic. Moreover, this traffic is predicted to increase more if Internet of Things (IoT) services are activated. In a conventional PON, VPN data is transmitted through ONU-OLT-ONU via U/S and D/S carriers. It leads to waste of bandwidth and energy due to O-E-O conversion in the OLT and round-trip propagation between OLT and remote node (RN). Also, it causes inevitable load to the OLT for electrical buffer, scheduling and routing. The network inefficiency becomes more critical in a LR-PON which has been researched as an effort to reduce CAPEX and OPEX through metro-access consolidation. In the proposed system, the VPN data is separated from conventional U/S and re-modulated on the D/S carrier by using RSOA in the ONUs to avoid bandwidth consumption of U/S and D/S unlike in previously reported system. Moreover, the transmitted VPN data is re-directed to the ONUs by wavelength selective reflector device in the RN without passing through the OLT. Experimental demonstration for the VPN communication system in an OFDM based LR-PON has been verified.

Original languageEnglish
Title of host publicationBroadband Access Communication Technologies IX
EditorsBenjamin B. Dingel, Katsutoshi Tsukamoto
PublisherSPIE
ISBN (Electronic)9781628414776
DOIs
Publication statusPublished - 2015 Jan 1
EventBroadband Access Communication Technologies IX - San Francisco, United States
Duration: 2015 Feb 102015 Feb 12

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9387
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherBroadband Access Communication Technologies IX
CountryUnited States
CitySan Francisco
Period15/2/1015/2/12

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Kim, C. H., Jung, S. M., Kang, S. M., & Han, S. K. (2015). All-optical virtual private network system in OFDM based long-reach PON using RSOA re-modulation technique. In B. B. Dingel, & K. Tsukamoto (Eds.), Broadband Access Communication Technologies IX [93870F] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9387). SPIE. https://doi.org/10.1117/12.2076249