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학술지 Simple Ring-type Passive Optical Network with Two-fiber Protection Scheme and Performance Analysis
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저자
이병탁, 이문섭, 송호영
발행일
200706
출처
Optical Engineering, v.46 no.6, pp.1-6
ISSN
0091-3286
출판사
SPIE
DOI
https://dx.doi.org/10.1117/1.2746929
협약과제
07ZT1100, 광가입자망(FTTH)서비스 개발 실험사업, 김봉태
초록
A simple passive optical network with ring-type distributed optical networking units (ONUs) is proposed. The ring protection is performed by a clockwise and a counterclockwise circulating fiber. The protection-and-restoration time is measured to be less than 5 s, and depends on the optical switching and the autodiscovery process time. In spite of additional devices for protection, the system reliability is enhanced so that the expected downtime decreases from 41.3 to 28.9 min/ yr. The optimum condition to support the maximum number of ONUS is derived and verified by an optical link simulation. © 2007 Society of Photo-Optical Instrumentation Engineers.
키워드
Access networks, PON, Protection, Ring
KSP 제안 키워드
Fiber protection, Link simulation, Optical instrumentation, Optical networking, Optimum condition, Passive optical network, Performance analysis, Protection Scheme, Restoration time, Ring protection, Ring-type