In-Service Monitoring and Failure Identifying against Fiber Fault in FTTH with Passive In-Line Monitoring (PIM) Device

Ab-Rahman, Mohammad Syuhaimi; Ng, Boonchuan; Ismail, Roslina; Ehsan, Abang Annuar; Shaari, Sahbudin

doi:10.1109/icfn.2009.63

Cited by 1 publication

(3 citation statements)

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“…As the move of FTTH network, survivability or robustness of FTTH system has become an important issue [12][13][14][15][16][17][18][19][20][21][22][23][24][25]. From the view point of implementing methods for enhancing the survivability of FTTH system, we can divide the research works into two parts roughly.…”

Section: Related Workmentioning

confidence: 99%

“…The other part of the reported researching works paid attention on the design of monitoring systems for de tecting and failure identification with the assistant of OTDR (Optical Time Domain Reflectometry) [21][22][23][24][25]. A Passive In-line Monitoring (PIM) device prototype was proposed, which used to tap out a small ratio of triple-play signals for in-service monitoring and failure identifying against fiber fault in FTTH network [21].…”

Section: Related Workmentioning

confidence: 99%

“…A Passive In-line Monitoring (PIM) device prototype was proposed, which used to tap out a small ratio of triple-play signals for in-service monitoring and failure identifying against fiber fault in FTTH network [21]. This device was designed to be installed with the main lines in FTTH permanently to allow the technicians to simply connect it to a portable tester unit for transmission surveillance and failure detection.…”

Section: Related Workmentioning

confidence: 99%

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Triplexer Monitor Design for Failure Detection in FTTH System

Fu¹,

et al. 2012

J. Opt. Commun.

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Triplexer was one of the key components in FTTH systems, which employed an analog overlay channel for video broadcasting in addition to bidirectional digital transmission. To enhance the survivability of triplexer as well as the robustness of FTTH system, a multi-ports device named triplexer monitor was designed and realized, by which failures at triplexer ports can be detected and localized. Triplexer monitor was composed of integrated circuits and its four input ports were connected with the beam splitter whose power division ratio was 95:5. By means of detecting the sampled optical signal from the beam splitters, triplexer monitor tracked the status of the four ports in triplexer (e.g. 1310 nm, 1490 nm, 1550 nm and com ports). In this paper, the operation scenario of the t riplexer monitor with external optical devices was addressed. And the integrated circuit structure of the t riplexer monitor was also given. Furthermore, a failure localization algorithm was proposed, which based on the state transition diagram. In order to measure the failure detection and localization time under the circumstance of different failed ports, an experimental test-bed was built. Experiment results showed that the detection time for the failure at 1310 nm port by the triplexer monitor was less than 8.20 ms. For the failure at 1490 nm or 1550 nm port it was less than 8.20 ms and for the failure at com port it was less than 7.20 ms.

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