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Nadzor pasivnega optičnega dostopovnega omrežja z vgrajeno optično reflektometrijo
KALANJ, ALJOŠA (Author), Batagelj, Boštjan (Mentor) More about this mentor... This link opens in a new window

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Abstract
V zaključnem delu, ki predstavlja diplomsko delo za visokošolski strokovni študij, je predstavljena sodobna tehnologija na področju optičnih komunikacij, na podlagi katere je mogoč stalen, hiter, učinkovit in predvsem cenovno ugoden nadzor fizičnega sloja v dostopovnem pasivnem optičnem omrežju (angl. Passive Optical Network). Gre za tehnologijo omrežja z vgrajeno optično reflektometrijo (angl. Embededd Optical Reflectometry), kjer meritve lahko potekajo tako iz centralne postaje (angl. Central Office), kot tudi iz uporabniške strani. V obeh primerih je želja izvesti nadzor brez prekinitev v prenosu koristnih podatkov. Za namen diplomske naloge je najprej opisana arhitektura pasivnega optičnega omrežja in omrežnih elementov, ki se v njem nahajajo. Prav tako je v nadaljevanju opisano delovanje, namen ter omejitve optičnega reflektometra v časovnem prostoru (angl. optical time domain reflectometry – OTDR) ter optičnega reflektometra v frekvenčnem prostoru (angl. optical frequency domain reflectometry – OFDR) s spremenljivo modulacijsko frekvenco. Jedro diplome predstavlja strokovna razlaga ter koncept izvedbe nadzora z vgrajenim optičnim reflektometrom, kjer je podrobno opisan postopek pridobivanja podatkov iz aktivnih komponent v omrežju, integracija ter modulacija funkcije optične reflektometrije na vrh podatkovnega signala v smeri proti uporabniku ter integracijo metode, kjer meritev poteka iz smeri uporabnika. Natančno je opisan tudi postopek umeščanja novega omrežnega elementa, ki bo v prihodnosti služil za nadgradnje omrežji ter celovito neodvisnost omrežja od končnega uporabnika.

Language:Slovenian
Keywords:pasivno optično omrežje, vgrajen OTDR, nadzor
Work type:Undergraduate thesis (m5)
Organization:FE - Faculty of Electrical Engineering
Year:2016
Views:787
Downloads:595
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Secondary language

Language:English
Title:Monitoring of Passive Optical Access Network with Embedded Optical Reflectometry
Abstract:
This final paper, which represents thesis at higher professional studies, presennts the latest technology in the field of optical communications, on basis of which it is possible to have continuous, fast, efficient and above all cost-effective network monitorning of the physical layer in the access passive optical networks. It is a network technology with embededd optical reflectometry, where measurements can be carried out from the central office (CO), and from the user side. In both cases, monitoring is carried out smoothly and without interruptions in the transmission of useful data. For the purpose of this thesis it is first described passive optical network (PON) architecture and network elements that are present therein. It also describes the operation, purpose and limitations optical time domain reflectometry (OTDR) and optical frequency domain reflectometry (OFDR) in a variable modulation frequency. The core of the thesis presents expert interpretation and implementation of network monitorning concept sistem with emmbedded optical reflectometry functions, where is described in detail the process of obtaining data from the active components in the optical network, integration and modulation of optical reflectometry functions on top of the data signal in downstream, and integration method where measurement is carried out from the user or upstream direction. Accurately it describes the process of placing a new network element, which will in the future serve for network upgrades and full independence of the network from the end user. In conclusion of work are given the advantages and disadvantages of network monitoring sistem with embedded reflectometrics functions for PONs.

Keywords:passive optical network, embededd OTDR, monitoring

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