Fiber- A nd FSO-Protected Connections for Long-Reach TWDM Access Architecture with Fault Protection

Chien Hung Yeh*, Wei Hung Hsu, Bo Yin Wang, Wei Yao You, Jhao Ren Chen, Chi Wai Chow, Shien Kuei Liaw

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we propose a long-reach star-ring-based time- A nd wavelength-division-multiplexing passive optical network (TWDM-PON) by usingfiber- A nd free space optical (FSO)-protected architecture againstfiber breakpoint. Here, the newfiber-based and FSO-based optical network unit (ONU) modules are designed in the PON system to achieve the self-protected operation. Thus, the adjacent ONU is linked to produce thefiber-or FSO-based reconnections. Thus, 4-10 Gbit/s downstream and 10 Gbit/s upstream signals can be reached through 70 kmfiber transmission and a length of free space link without signal amplification and dispersion compensation. Moreover, the relationships of splitter ratio and FSO link length in the proposed TWDM access network are also analyzed and discussed.

Original languageEnglish
Pages (from-to)189982-189988
Number of pages7
JournalIEEE Access
Volume8
DOIs
StatePublished - 2020

Keywords

  • Fault protection
  • Free space optical (fso)
  • Ook signal
  • Star-ring- A rchitecture
  • Twdm-pon

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