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Optical design and analysis of CWDM upstream TWDM PON for NG-PON2
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- Authors
- Jongdeog Kim, Chang-Soo Park
- Issue Date
- 2013-06
- Citation
- Optical Fiber Technology, v.19, no.3, pp.250-258
- ISSN
- 1068-5200
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- For passively reach-extended next-generation passive optical networks (NG-PONs), we propose an asymmetric hybrid PON architecture and wavelength plan for using eight 2.5 Gbit/s coarse wavelength division multiplexing (CWDM) in the upstream direction and eight 10 Gbit/s dense wavelength division multiplexing (DWDM) in the downstream direction, called Cu-TWDM PON. The power budget feasibilities, the optical path losses, and the dispersion power penalties in the CWDM upstream wavelengths are precisely investigated in terms of related specifications required to enhance the network coverage to over 40 km with single-mode fibers (SMFs) based on ITU-T G.652.A and B and Corning's SMF-28e, as the worst-case and the practical-case feasibilities, respectively. We also report on 10 Gbit/s and 2.5 Gbit/s transmission experiments up to 60 km for the downstream and upstream links. Based on the analyses and experimental results, we provide guidelines for the physical media dependent layer specification of Cu-TWDM PON for NG-PON applications. © 2013 Elsevier Inc. All rights reserved.
- KSP Keywords
- 10 Gbit/s, Asymmetric hybrid, Coarse wavelength division multiplexing(CWDM), Dense wavelength division multiplexing(DWDM-PON), Downstream direction, ITU-T, NG-PON2, Network coverage, Next-generation, Optical Design, Passive optical network