All-optical virtual private network in OFDM-PON using microwave photonic filter

Chang Hun Kim, Sun Young Jung, Sang Min Jung, Sang Kook Han

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We propose and demonstrate a novel all-optical virtual private network (VPN) using a microwave photonic filter, which enables inter-communications among optical network units in a passive optical network system. In our scheme, an optical coupler based recirculating delay line is used at optical line terminal as an optical subsystem to implement a microwave photonic-bandpass filter (MP-BPF). The periodic passbands of an MP-BPF are used to transmit VPN signal, whereas stopbands are used for conventional upstream transmission. The proposed system has two critical issues, optical phase-induced intensity noise in the MP-BPF and Rayleigh back-scattering interference by a single-fiber loop back link. To overcome the issues, an RF clipping tone based spectrum-broadening technique is applied to uplink transmitter. The proposed all-optical VPN system is tolerant to wavelength of VPN optical carrier, and enables multi-VPN data transmission using multi-passbands of MP-BPF.

Original languageEnglish
Article number7726031
Pages (from-to)2830-2833
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number24
Publication statusPublished - 2016 Dec 15

Bibliographical note

Publisher Copyright:
© 1989-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


Dive into the research topics of 'All-optical virtual private network in OFDM-PON using microwave photonic filter'. Together they form a unique fingerprint.

Cite this