Hybrid WDM FSO fiber access network with rayleigh backscattering noise mitigation

Chien Hung Yeh*, Jhao Ren Chen, Wei Yao You, Chi Wai Chow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In the paper, we present and investigate an integrated wavelength-division-multiplexing (WDM) free space optical (FSO) fiber access network for 51 km long-reach connection. Here, the proposed network architecture also can mitigate Rayleigh backscattering (RB) interferometric beat noise. We employ symmetric 4 × 10 Gbit/s on-off keying (OOK) WDM-FSO downstream and upstream wavelengths for demonstration. According to the simulated and experimental results, the free space transmission length of 400 to 940 m can be achieved based on various WDM-FSO downstream signals and their corresponding power budget, when the wavelengths are without optical amplification.

Original languageEnglish
Article number9099841
Pages (from-to)96449-96454
Number of pages6
JournalIEEE Access
StatePublished - 1 Jan 2020


  • Free space optical (FSO) communication
  • long-reach
  • on-off keying
  • passive optical network (PON)
  • Rayleigh backscattering (RB) noise mitigation
  • wavelength division-multiplexing (WDM)

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