Broadband access technology for passive optical network

Sien Chi*, Chien Hung Yeh, Chi-Wai Chow

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations


We will introduce four related topics about fiber access network technologies for PONs. First, an upstream signal powerequalizer is proposed and designed using a FP-LD in optical line terminal applied to the TDM-PON, and a 20dB dynamic upstream power range from -5 to -25dBm having a 1.7dB maximal power variation is retrieved. The fiber-fault protection is also an important issue for PON. We investigate a simple and cost-effective TDM/WDM PON system with self-protected function. Next, using RSOA-based colorless WDM-PON is also demonstrated. We propose a cost-effective CW light source into RSOA for 2.5Gb/s upstream in WDM-PON together with self-healing mechanism against uber fault. Finally, we investigate a 4Gb/s OFDM-QAM for both upstream and downstream traffic in long-reach WDM/TDM PON system under 100km transmission without dispersion compensation. As a result, we believe that these key access technologies are emerging and useful for the next generation broadband FTTH networks.

Original languageEnglish
Article number723408
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2009
EventBroadband Access Communication Technologies III - San Jose, CA, United States
Duration: 28 Jan 200929 Jan 2009


  • Fiber to the home
  • Passive optical network
  • Self-protection


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