Journal ArticleDOI
Fiber link loss monitoring scheme in bidirectional WDM transmission using ASE-injected FP-LD
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TLDR
In this article, the authors proposed a novel fiber link loss monitoring method for a WDM passive optical network based on the optical signal comparison between a reference amplified spontaneous emission signal and its reflection from an optical reflector.Abstract:
We propose and demonstrate a novel fiber link loss monitoring method for a wavelength-division-multiplexed (WDM) passive optical network. This method is based on the optical signal comparison between a reference amplified spontaneous emission signal and its reflection from an optical reflector. Therefore, we can calculate the link loss exactly and also measure the characteristics of upstream optical signals without suspending the in-service channels. Since this scheme does not use narrow-band wavelength-dependent components such as fiber Bragg gratings, it is cost-effective in implementation and maintenance within a real optical network. We experimentally demonstrate that the link quality of upstream signals as well as fiber link faults on all WDM channels can be monitored in real timeread more
Citations
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Patent
Method and device for measuring a link loss of an optical transmission line
Nicolas Dupuis,Stijn Meersman +1 more
TL;DR: In this paper, the authors proposed a method and device for measuring the link loss of an anoptical transmission line (13) based on the optical time domain reflectometry performed by means of an optical time-domain reflectometer.
Proceedings ArticleDOI
Optical layer monitoring in Passive Optical Networks (PONs): A review
TL;DR: In this article, an exhaustive review of optical layer monitoring in PONs is given considering both time-division multiplexed PON (TDM-PON) and wavelength division multiple-layer (WDM-pON) cases.
Journal ArticleDOI
Passive Optical Access Networks: State of the Art and Future Evolution
TL;DR: An exhaustive summary is given about the-state-of-the-art of modulation and encoding techniques recently proposed by the scientific community, as well as the open challenges (such as colorless and coolerless ONUs) for telecom companies and international standardization compliance.
Journal ArticleDOI
Reliable Wavelength-Division-Multiplexed Passive Optical Network Using Novel Protection Scheme
TL;DR: In this paper, a reliable wavelength division multiplexed passive optical network (WDM-PON) with self-protection capability is proposed, which can provide automatic protection against any fiber cut between central office and optical network unit (ONU).
References
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Journal ArticleDOI
A low-cost WDM source with an ASE injected Fabry-Perot semiconductor laser
TL;DR: In this article, a novel wavelength division multiplexing (WDM) source employing an uncooled and unisolated Fabry-Perot semiconductor laser diode (F-P SLD) was proposed.
Journal ArticleDOI
On the evolution of PON-based FTTH solutions
TL;DR: In this paper, the authors review and compare the current PON-based FTTH solutions, ATM-PON (APON) and Ethernet PON (EPON), and provide a possible evolution scenario to future WDMPON.
Journal ArticleDOI
Fiber-fault identification for branched access networks using a wavelength-sweeping monitoring source
TL;DR: In this paper, a new fiber-fault identification scheme for optically amplified branched networks is proposed and experimentally demonstrated, which makes use of fiber Bragg gratings and an internally generated light source from erbium-doped fiber amplifiers through an optical feedback loop.
Journal ArticleDOI
Fault location technique for in-service branched optical fiber networks
TL;DR: In this article, a fault location technique using an optical time-domain reflectometer (OTDR) for branched optical fiber networks is described, and the required dynamic range of the OTDR for locating a fiber failure occurring after N-way optical power splitting has been studied.
Journal ArticleDOI
A practical passive surveillance scheme for optically amplified passive branched optical networks
TL;DR: In this article, the conditions of the fiber link and optical amplifier at each branch can be monitored by constantly checking the reflected power level of the corresponding wavelength without suspending the in-service channels.