BS/EN 50411-4-1-2019 pdf download.Fibre management systems and protective housings to be used in optical fibre communication systems – Product specifications -Part 4-1: Passive optical street cabinet for category A.
3.1.10
optical fibre connector
component normally attached to a cable or piece of apparatus for the purpose of providing interconnection and disconnection of fibre optic cables
Note I to entry: The interconnection usually consists of two plugs mated together Ii an adapter or 1 plug mated in a socket.
3.1.11
passive optical component
optical component or assembly which does not require any source of energy for its operation other than optical Input signals, or controls the dynamic or static characteristics of optical signals using a source of energy
Note I to entry: A passive optical component never generates an optical gain of signal power. Note 2 to entry: Examples indude optical attenuators and passive branching devices.
3.1.12
patchcord
length of optical fibre or cable, permanently terminated at bath ends with a plug
3.1.13
pigtail
length of optical fibre or cable, permanently terminated at one end with a plug
3.1.14
protective housing
indoor and outdoor housing utilised for the storage, distribution or protection of one or more cable joints or passive or active telecom equipment
Note ito entry: examples of protective housings: wall boxes, cabinets, cases, optical distruhon frame sub rads.
closures or pedestals. A closure can be either a sealed closure or a “free breathing closure Note 2 to entry a protective housing contains a fthre management system
3.1.15
single circuit
Sc
physical fibre separation level where the optical circuit consists of one fibre (single fibre), or more than one fibre, providing all services for one subscriber
Note 1 to entry: This fibe separation level has the fibre(s) of only one customer on one splice tray. It is the highest (best) degree of physical circuit separation.
physical fibre separabon level in me cable subassembly comprising one or more optical fibres inside a common covering e.g. in a tube or inside one groove of a grooved cable (slotted core cable)
Note 1 to entry: A single element provides services to more than one subscriber
Note 2 to entry: This fibre separation level has all fibres from a cable element (e.g. loose tube) on one splice tray. It Is an intermediate degree of physical cWcuit separabon (between single circuit and multiple element),
3.1.17
single ribbon
SR
physical tibre separation level with all fibres grouped in one ribbon
Note I to entry: Depending on the fibres deployment, a single ribbon can contain all the fibres of one circuit (single circuit) or the fibres of more than one circuit (single element).
3.1.18
splice tray
structure that organizes and controls storage of fibre splices in an orderly manner, together with the associated excess uncabled fibre length
Note Ito entry: A splice tray is a part of a fibre management system.
3.1.19
street cabinet
free breathing. outdoor, above ground installed housing that is permanently attached to the ground
Note I to entry: A street cabinet is permanently fixed to the ground and is not specifically designed to allow cable movement (e.g. torsion, bending) during operation
3.1.20
transient loss
short term (rnliseconds) reversible change of optical transmission characteristics arising from optical discontinuity, physical defects and modifications of the attenuation (e.g. bend loss) normally caused by mechanical stress
3.1.21
uncut fibre
fibres from a continuous cable with the cable sheath removed over a defined length
Note 1 to entry: Uncut fibres typicauy comprise a section of cable where the cable sheath has been removed and the cab4e tubes or uncut fibres are deaned as for installation. These uncut tubes or fibres are then stored, usually inside a protective housing, in a loop. When required the fibres or tubes are then Cut and the fibres connected or spliced.BS/EN 50411-4-1-2019 pdf download.

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