We propose an all-optical virtual private network (VPN) supporting dynamic bandwidth allocation (DBA) in an orthogonal frequency division multiple access-based passive optical network. A microwave photonic bandpass filter (MP-BPF) is used to transmit the VPN signal without electrical conversion. The DBA is implemented by adjusting a free spectral range of the MP-BPF with corresponding subcarrier allocation. A RF clipping-tone (CT) is used to stabilize the optical channel suffered from phase induced-intensity noise and Rayleigh back-scattering noise. The DBA is experimentally verified at different two DBA scenarios in 20-km single-fiber loopback link in terms of channel error vector magnitude, spectral efficiency after adaptive modulation. Due to the CT-based channel stabilization, achievable spectral efficiency could be improved, and the feasibility of the proposed system is successfully demonstrated.
Bibliographical noteFunding Information:
Manuscript received October 13, 2017; revised November 27, 2017; accepted November 30, 2017. Date of publication December 8, 2017; date of current version January 5, 2018. This work was supported by the Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea Government (MSIT) (B0101-17-1276, Access Network Control Techniques for Various IoT Services). Corresponding author: Sang-Kook Han (e-mail: firstname.lastname@example.org).
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering