A Survivable and Flexible WDM Access Network by Alternate FSO- and Fiber-Paths for Fault Protection

• DOI: 10.1109/jphot.2021.3140095
• Publication Date: 2022-01-06T20:29:44Z
• Authors: Chien-Hung Yeh; Han-Shin Ko; Shien-Kuei Liaw; Li-Hung Liu; Jing-Heng Chen; Chi-Wai Chow
• Keywords: Optical add-drop multiplexer; Optical cross-connect; Access network; SIGNAL (programming language); Optical Transport Network

Inthe work, we study and express a new wavelength-division-multiplexing passive optical network (WDM-PON) architecture with fiber fault protection. The designed unit (ONU) module periodic spectrum of 2 × N array waveguide grating (AWG) are applied to produce the self-protected mechanism. Here, employ free space communication (FSO)- fiber-based connection between two adjacent ONUs achieve signal relink. Moreover, corresponding performances downstream upstream also analyzed discussed.