Experimental demonstration of CW light injection effect in upstream traffic TDM-PON

Chien Hung Yeh*, Chi Wai Chow, Yu Fu Wu, Fu Yuan Shih, Sien Chi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


High capacity time-division-multiplexed passive optical network (TDM-PON) is an emerging fiber access network that deploys optical access lines between a carrier's central office (CO) and a customer sites. In this investigation, we demonstrate and analyze the continuous wave (CW) upstream effect in TDM-PONs. Besides, we also propose and design a protection apparatus in each optical network unit (ONU) to avoid a CW upstream traffic in TDM-PONs due to sudden external environment change or ONU failure. When an upstream CW injection occurs in TDM access network, the protection scheme can stop the CW effect within a few ms to maintain the entire data traffic.

Original languageEnglish
Pages (from-to)178-181
Number of pages4
JournalOptical Fiber Technology
Issue number3
StatePublished - 1 Jan 2010


  • Burst-mode
  • CW
  • Time-division-multiplexed passive optical network (TDM-PON)

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