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Classification icons for indoor optical cables

Fiber and communications infrastructure knowledge brief Published 08 Sep 2025

Use this reference to prepare product questions for BAGYOU FIBRE. Check interfaces, capacity, protection and installation requirements against the current product documentation.

Indoor optical cables are classified into riser, interconnect, distribution, and breakout types, each designed for specific indoor applications and environmental requirements.

Indoor Optical Cable Classification

Cable Type

Structure & CoreKey FeaturesTypical ApplicationsJacket/Sheath MaterialRiser (Vertical Lifting) CableSingle or multi-core, designed for vertical runsHigh tensile strength, supports vertical shafts, withstands self-weightConnection between entrance equipment, equipment rooms, and communication cabinets on different floorsPVC or LSZH, flame-retardantInterconnect CableCompact single-core, 2–8 cores, tight-bufferedSmall size, flexible, can handle small bending radius, equipped with standard connectorsOptical fiber to workstation, patch cords, jumpers, communication cabinet interconnectionsLSZH or PVC, sometimes PU for abrasion resistanceDistribution (Bundle) CableMultiple tight-buffered fibers bundled under one jacket, 4–144 fibersFlexible branching, no splice trays needed, supports horizontal and vertical structured cablingData centers, office networks, structured cablingLSZH or flame-retardant PVCBreakout CableEach fiber has its own strength member and jacketExcellent tensile and crush resistance, direct termination without splice boxesIndustrial Ethernet, machine vision, high-mechanical-stress environmentsLSZH, PVC, or PU for chemical and abrasion resistancePlenum CableSingle or multi-core, designed for air-handling spacesHigh flame retardancy, low smoke emission, corrosion-resistantPipelines, high-pressure inflatable spaces, HVAC systemsLSZH or UL-certified flame-retardant PVCRodent-Resistant CableSingle or multi-core, reinforced with stainless steel or armored layersHigh lateral pressure resistance, excellent rodent protectionBuildings prone to rodent damage, industrial environmentsLSZH, PVC, or PU armored jacketsKey ConsiderationsCore Count & Fiber Type: Indoor cables can be single-mode or multimode, with core counts ranging from 1 to over 144 fibers depending on application ( ).

Fire Safety Ratings: LSZH (Low Smoke Zero Halogen) is preferred in high-toxicity or smoke-sensitive areas, while PVC is common for general indoor use ( ). Flexibility & Bend Radius: Tight-buffered and compact designs allow installation in limited spaces and small bending radii without signal loss ( ). Specialized Sheaths: PU jackets provide chemical, abrasion, and scratch resistance for emergency, military, or high-stress applications ( ).

This classification chart provides a clear overview of indoor optical cable types, helping in selecting the appropriate cable based on installation environment, mechanical requirements, and fire safety standards.

Classification icons for indoor optical cables - BAGYOU FIBRE NETWORKS [PDF]

Classification icons for indoor optical cables

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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