An EU-funded project, FABULOUS (FDMA Access By Using Low-cost Optical Network Units in Silicon Photonics), has created innovative new components to be used in digital telecommunications including digital radio, television and internet that are lower-cost and more efficient than currently existing technology. The project has demonstrated that its technology will allow higher bit rates – […]
Data requirement is tremendous increase in year 2016 to year 2020, thus a high transmission media is required, Active Optical Cables (AOCs) could achieve high data transmission over distances, The AOC with electrical inputs as a traditional copper cable, and use optical fiber as transmission media, it is an ideal to streamlined installation for high-performance […]
ITU-T Recommend G.654 fiber is a cut-off shifted single-mode optical fiber especially used for high bandwidth long distance transmission. The G. 654 fiber is a single mode optical fiber and cable which has the zero-dispersion wavelengths around 1300nm, the fiber with loss minimized and cut-off wavelength shifted at around 1550nm. the fiber standard was firstly […]
Singapore is creating test environments to assess if data centres are able to operate at optimal levels even in hotter, tropical climates. The Infocomm Development Authority (IDA) said Monday it was working with various industry players to evaluate the feasibility of a «tropical data centre», in which environmental temperatures would be tested at up to […]
Architecture mono-fibre : Sur la partie terminale du réseau en fibre optique, une architecture monofibre est caractérisée par une fibre unique qui relie le point de mutualisation à la prise terminale optique dans un logement. Architecture multi-fibres : Sur la partie terminale du réseau en fibre optique, une architecture multifibres est caractérisée par plusieurs fibres […]
V souvislosti s evolucí přístupových sítí se v současné době stále častěji diskutují optické, případně kombinované opticko-metalické přístupové přípojky označované jako FTTx (Fibre to the X), kde optická část přípojek bude založena na některé z variant pasivních optických přístupových sítí (PON), nejčastěji na variantě GPON (Gigabit Passive Optical Network) či EPON (Ethernet Passive Optical Network). […]
Insertion loss tests are primarily used to test FTTx PONs (Passive Optical network) during installation. Insertion loss testing may be performed on individual fiber segments as they’re installed (e.g. test feeder fiber from Central Office (CO) to Fiber Distribution Hub (FDH), test distribution fiber from FDH to AP, or test drop fiber from AP to […]
Multimode fibers are identified by the OM (“optical mode”) designation as outlined in the ISO/IEC 11801 standard. OM1, for fiber with 200/500MHz*km overfilled launch (OFL) bandwidth at 850/1300nm (typically 62.5/125um fiber) OM2, Type A1a.1 , for fiber with 500/500MHz*km OFL bandwidth at 850/1300nm (typically 50/125um fiber) OM3, Type A1a.2, for laser-optimized 50um fiber having 2GHz*km […]
The following is a list of optical testing tools used for FTTx (Fiber to the x) network: 1. VFL (visual fault locator) is capable continuity check fiber link up to 15km, break/bend visual identifier for fibre along patch panel/hub areas, It is mainly applied in fibre link construction and troubleshooting at locations where fibres are accessible. […]
PON architectures for FTTH deployments are currently based on passive optical splitters to distribute the bandwidth to each customer using fiber splitters providing ratios ranging up to 1:64 or even 1:128. The physical PON FTTH architecture typically supports the Ethernet protocol. PON network feeds a variety of optical network terminations (ONTs) or optical network units […]
