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Performance evaluation of fault-branch detection in TDM passive optical networks by spectral analysis of interferometric signals

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Abstract

A new fault-branch detection scheme is proposed to troubleshoot the breaks of any distribution fibers in a time-division multiplexing (TDM) passive optical network. We employ a continuous optical frequency sweeper at the optical line terminal (OLT) and an interferometric (IF) device at each optical network unit (ONU). By analyzing the spectrum of the returned combined signals at the OLT, we can obtain the status of all branches. This detection method not only uses a small optical frequency band for surveillance monitoring, but is also simple to operate. Furthermore, a modified architecture is proposed to relax the specifications of IF devices. The tolerance of the IF device length was analyzed using the Monte–Carlo simulation method.

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Authors and Affiliations

  1. Department of Electrical Engineering, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan

    Kuo-Chin Jong & Hen-Wai Tsao

  2. Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan

    San-Liang Lee

  3. Network Operation Supporting Technology Lab., Chunghwa Telecommunication Laboratories, Chunghwa Telecom Co. Ltd., Taoyuan, Taiwan

    Shou-Kuo Shao

Authors
  1. Kuo-Chin Jong
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  2. Hen-Wai Tsao
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  3. San-Liang Lee
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  4. Shou-Kuo Shao
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Correspondence to Kuo-Chin Jong.

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Jong, KC., Tsao, HW., Lee, SL. et al. Performance evaluation of fault-branch detection in TDM passive optical networks by spectral analysis of interferometric signals. Photon Netw Commun 20, 165–172 (2010). https://doi.org/10.1007/s11107-010-0256-0

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  • DOI: https://doi.org/10.1007/s11107-010-0256-0

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