Mr. Luke Kuan Wang Profile

Luke Kuan Wang

at National Kaohsiung Univ of Applied Sciences

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SPIE Journal Paper | 4 March 2015

Four-path multiple ∞-shaped fiber protection mechanism for cable television networks

Fu-Hung Shih, Jiunn-Ru Lai, Wen-Ping Chen, Luke Wang

OE, Vol. 54, Issue 03, 036103, (March 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.3.036103

KEYWORDS: Switching, Head, Switches, Structured optical fibers, Fiber optics, Signal detection, Telecommunications, Receivers, Televisions, Stereolithography

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Traditional cable television (CATV) network configuration is mainly a branch topology. When fibers break, there are always disconnections of CATV and Internet access. Meanwhile, network service providers usually cannot be instantly informed of network breakage; network problems are noticed only after the users call for services. Network breakage location detection and repair are, in general, costly and time-consuming. This paper proposes a new framework to protect CATV fiber optic networks, where a HUB with multiple optical protection switching (OPS) is constructed between the head end and the fiber nodes. The first layer ranging from the head end to the HUB forms a 1+1 protection path ring structure. The second layer ranging from the HUB to the fiber nodes forms multiple 1+1 protection path ring structures. The framework can form a four fiber optic path protection architecture with multiple ∞-shapes between the head end and the fiber nodes. When the CATV network system experiences a malfunction, such as fiber optic cable breakage or poor signal quality, OPS can immediately switch the fiber transmission path in order to maintain uninterrupted CATV network traffic. After simulation tests on fiber path switching time automatic protection switching, frame loss, packet jitter, latency, bit errors, and system traffic flow monitoring by manually switching OPS and pulling broken fiber optic cable, results show that the fiber path protection switching mechanism can react immediately, and test data results show that network traffic is unaffected, so the proposed framework can effectively enhance the survivability and quality of service of CATV network systems.

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