Optical Maintenance in PONs

Caviglia, Francesco; Biase, V. C. Di; Gnazzo, A.

doi:10.1006/ofte.1999.0302

Cited by 24 publications

(8 citation statements)

References 6 publications

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“…A lot of fiber fault locations have been conducted for branched optical fibers of PONs (Sankawa et al, 1990;Tanaka et al, 1996;Caviglia et al, 1999;Schmuck et al, 2006;Mulder et al, 2007). The Multiwavelength OTDR method uses a costly arrayed waveguide grating to assign an individual testing wavelength to each branched fiber (Tanaka et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Optical System Monitoring Based on Reflection Spectrum of Fiber Bragg Grating

MD¹

2012

Journal of Computer Science

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Problem statement: This study presents fiber fault monitoring approaches for Fiber-to-the Home (FTTH) with a Passive Optical Network (PON). Current fiber fault monitoring approaches are difficult to be implemented due to its complexity and high loss as the amount of branches increase. Approach: A fiber fault monitoring scheme is proposed whereas Fiber Bragg Grating (FBG) is placed on each branch of the Optical Network Unit (ONU). The advantages of the scheme are that it is simple, low cost and efficient in monitoring fiber fault in ONU. FTTH based network design is simulated using Optisystemtem 8.0 in order to investigate the feasibility of the proposed scheme. Results: The reflection spectrum of Fiber Bragg Gratings (FBGs) with different spectrum shape, frequencies and amplitude is used to differentiate each optical network. The simulation result shows that the unique characteristic of fiber Bragg grating is able to distinguish each optical network for a 20 km Passive Optical Network (PON) system. Conclusion: This study suggests the implementation of Fiber Bragg Grating that is placed in each network instead of using Optical Time Domain Reflectometer (OTDR) for fiber fault monitoring

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Section: Introductionmentioning

confidence: 99%

Optical System Monitoring Based on Reflection Spectrum of Fiber Bragg Grating

MD¹

2012

Journal of Computer Science

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“…Several physical layer monitoring solutions based on Optical Time Domain Reflectometry (OTDR) have been proposed in the literature [3]. However, implementation of OTDRs into tree-structured PONs brings several challenges which are: the lack of dynamic range to monitor the infrastructure after the splitter, a long measurement time due to averaging necessary to obtain an OTDR trace and repetition of the measurement on large number of ONTs, and the reflection dead-zone that makes it impossible to distinguish the monitoring reflection peaks from two nearly located ONTs [4].…”

Section: Introductionmentioning

confidence: 99%

Original monitoring technique for passive optical networks combining fiber Bragg gratings and wavelength swept light source

Yüksel

Wuilpart

Moeyaert

et al. 2010

2010 12th International Conference on Transparent Optical Networks

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“…Therefore, it becomes very complicated to localize the failure in the correct split branch of FTTH-PON [9,10]. Some researchers had discussed about the monitoring issues with OTDR and recommended a number of possible methods in [9,11,12] to overcome these problems to achieve desired network survivability. These approaches can monitor the network system without affecting other in-service channels.…”

Section: Introductionmentioning

confidence: 99%

Development of monitoring system for FTTH‐PON using combined ACS and SANTAD

Ab-Rahman

Premadi

2009

Int J Communication

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SUMMARYThis paper proposes a design of access control system (ACS) for fiber-to-the-home passive optical network (FTTH-PON). Our design works on a standard local area network using a specially designed hardware interfaced with a microcontroller integrated Ethernet to monitor the status of optical signals flow and provides the restoration against fiber failures/faults in FTTH-PON. We also introduce the centralized troubleshooting system by means of Smart Access Network Testing, Analyzing, and Database (SANTAD). ACS is the subsystem that controls the troubleshooting mechanism carried out by SANTAD. This design will be implemented together with optical line terminal (OLT) at central office (CO) to centralized monitoring and for controlling each optical fiber line's status as well as detecting any failure that occurs in the network system downwardly from CO toward multiple optical network units at different customer residential locations. The scope of this discussion highlighted only the monitoring and controlling instead of the restoration scheme offered.

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Optical Maintenance in PONs

Cited by 24 publications

References 6 publications

Optical System Monitoring Based on Reflection Spectrum of Fiber Bragg Grating

Optical System Monitoring Based on Reflection Spectrum of Fiber Bragg Grating

Original monitoring technique for passive optical networks combining fiber Bragg gratings and wavelength swept light source

Development of monitoring system for FTTH‐PON using combined ACS and SANTAD

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