Optical Fiber Cables & FTTx
Engineered aerial, direct-buried, riser, and drop cables adhering to ITU-T G.652.D and bend-insensitive G.657 standards for high-density last-mile FTTx deployments.
Technical Architecture & Subproduct Scope
Semita Technologies manufactures a comprehensive line of singlemode and multimode optical fiber cables designed for demanding environmental conditions, mechanical tensile loads, and high-density last-mile FTTx deployments. All cables feature rigorous moisture protection, UV resistance, and optional metallic/dielectric armoring.
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Our application engineering team designs custom connector configurations, core counts, and specialized armoring for telco operators.
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Indoor Drop Cable
Semita indoor drop cables are specially designed for FTTH (Fiber to the Home) last-mile applications. Featuring bend-insensitive G.657 optical fiber, dual parallel FRP (Fiber Reinforced Plastic) strength members, and a flame-retardant LSZH outer jacket, these cables ensure easy stripping, routing in tight bends, and high subscriber link reliability.
Key Engineering Features
- Low bend radius sensitivity (ITU-T G.657.A1/A2) preventing macro-bending signal loss
- Low Smoke Zero Halogen (LSZH) flame-retardant jacket compliant with building fire safety
- Dual parallel non-metallic FRP strength members protect optical cores from crushing
- Lightweight flat bow-type profile for easy staple fastening and compact raceway routing
- High tensile endurance with minimal signal degradation during subscriber installation
Approved Applications & Deployments
Technical Performance Specifications
| Fiber Count | 1, 2, 4 Cores |
|---|---|
| Fiber Standard | Singlemode ITU-T G.657.A1 / G.657.A2 |
| Strength Member | Dual Parallel Non-Metallic FRP Rods |
| Jacket Material | Flame Retardant LSZH (White or Black) |
| Cable Dimensions | 2.0 mm x 3.0 mm (± 0.1 mm) |
| Attenuation @ 1310 nm | ≤ 0.38 dB / km |
| Attenuation @ 1550 nm | ≤ 0.25 dB / km |
| Short-Term Tensile Load | 100 N |
| Long-Term Tensile Load | 50 N |
| Crush Resistance | 1,000 N / 100 mm |
| Min. Bending Radius | 12.5 mm (Static) / 25 mm (Dynamic) |
| Operating Temperature | -20°C to +60°C |
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Outdoor Cables (Unitube & Multitube)
Semita outdoor loose-tube optical fiber cables are engineered for rugged duct, aerial, and direct-buried metro backbones. Built with gel-filled PBT loose tubes protecting fibers against moisture ingress, reinforced with high-strength central strength members and electrolytic corrugated steel tape (CST) armor for unmatched crush and rodent protection.
Key Engineering Features
- Corrugated Steel Tape (CST) armoring provides supreme rodent and mechanical protection
- Thixotropic jelly-filled loose tubes prevent longitudinal water migration
- Heavy-duty UV-stabilized High-Density Polyethylene (HDPE) outer sheath
- High tensile aramid yarn reinforcement allowing long mechanical pulling tensions
- Fully compliant with Telcordia GR-20-CORE and IEC 60794 international standards
Approved Applications & Deployments
Technical Performance Specifications
| Core Counts Available | 6, 12, 24, 48, 72, 96, 144, 288 Cores |
|---|---|
| Fiber Standards | Singlemode ITU-T G.652.D / G.657.A1 |
| Loose Tube Material | PBT Polybutylene Gel-Filled |
| Armoring Type | Corrugated Electrolytic Steel Tape (CST) |
| Outer Sheath | UV-Resistant Black HDPE (High-Density PE) |
| Short-Term Tensile Strength | Up to 3,000 N |
| Long-Term Tensile Strength | 1,000 N |
| Crush Resistance | 3,000 N / 100 mm |
| Water Ingress Test | 1m water column, 24h (IEC 60794-1-2-F5) |
| Operating Temperature | -40°C to +70°C |
Hybrid Optical & Power Drop Cables
Semita Hybrid Drop Cables combine high-speed bend-insensitive singlemode optical fibers with multi-strand copper DC electrical conductors inside a single, ruggedized sheath. This composite architecture delivers both gigabit data transmission and remote electrical power to active FTTH micro-nodes, small cell base stations, and surveillance cameras in one pulling operation.
Key Engineering Features
- Delivers both gigabit optical data and DC power in a single unified cable assembly
- Drastically slashes civil trenching, conduit utilization, and installation labor by 50%
- Class 5 high-flexibility stranded electrolytic copper conductors
- Bend-insensitive G.657.A2 optical cores suited for tight turning radii on poles and masts
- Weatherproof and UV-resistant outer polyethylene or LSZH sheath
Approved Applications & Deployments
Technical Performance Specifications
| Optical Cores | 2, 4, 8, 12 Cores (Singlemode G.657.A2) |
|---|---|
| Power Conductors | 2 x 2.5 mm² or 2 x 4.0 mm² Stranded Copper |
| Voltage Rating | 300V / 500V DC (Dielectric Test: 2000V AC) |
| Conductor Grade | IEC 60228 Class 5 Annealed Pure Copper |
| Conductor Insulation | Cross-Linked Polyethylene (XLPE) |
| Outer Jacket | UV-Stabilized Black PE / LSZH |
| Tensile Load Rating | 800 N (Short-term) / 300 N (Long-term) |
| Crush Resistance | 2,000 N / 100 mm |
| Operating Temperature | -30°C to +75°C |
Riser & Flame-Retardant Indoor Cables
Semita vertical riser cables are specifically designed for vertical backbone distribution in multi-dwelling residential buildings (MDUs) and commercial corporate towers. Compliant with strict Construction Products Regulation (CPR) and IEC 60332 fire safety classifications, these tight-buffered and breakout cables prevent flame propagation and release zero toxic halogens during a fire.
Key Engineering Features
- Compliant with European CPR B2ca / Cca flame retardancy standards
- Zero Halogen (LSZH) composition emits minimal, non-corrosive, non-toxic smoke
- 900µm tight-buffered fibers permit direct, rapid field connectorization
- High-tensile aramid yarn strength elements provide sustained vertical tensile endurance
- Highly flexible design allows clean routing through vertical building utility shafts
Approved Applications & Deployments
Technical Performance Specifications
| Core Counts Available | 4, 8, 12, 24, 48 Cores |
|---|---|
| Fiber Standards | Singlemode G.657.A1 or Multimode OM3/OM4 |
| Buffer Construction | 900 µm Tight Buffer |
| Fire Safety Standard | CPR EN 50575 B2ca-s1a,d0,a1 / IEC 60332-1 |
| Smoke Generation | IEC 61034-2 Low Smoke |
| Toxicity & Acid Gas | IEC 60754-1 Zero Halogen |
| Min. Bending Radius | 10D (Dynamic) / 5D (Static) |
| Short-Term Tensile | 600 N |
| Operating Temperature | -20°C to +70°C |
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ADSS Aerial Cables (All-Dielectric)
Semita ADSS (All-Dielectric Self-Supporting) optical fiber cables are engineered for aerial span installations between utility poles and high-voltage electrical transmission towers. Featuring zero metallic elements, high young-modulus aramid yarn strength members, and optional track-resistant outer jacketing, ADSS cables remain completely unaffected by high electrical fields.
Key Engineering Features
- 100% all-dielectric construction prevents electromagnetic induction near power lines
- Span-engineered for pole and high-voltage transmission spans from 50m to 200m+
- Anti-tracking outer jacket option for high electrical potential environments up to 220kV
- High Young-Modulus aramid yarn layer delivers extreme wind and tensile strength
- Gel-filled loose tubes protect fibers against moisture, freeze expansion, and ice loads
Approved Applications & Deployments
Technical Performance Specifications
| Span Capabilities | 50m, 100m, 150m, 200m Spans |
|---|---|
| Fiber Counts | 12 to 144 Cores Singlemode G.652.D |
| Strength Elements | High Young-Modulus Aramid Yarn Perimeter |
| Outer Sheathing | HDPE or Track-Resistant (AT) Sheath |
| Max. Tensile Load (MAT) | Up to 15 kN (Span Engineering Dependent) |
| Crush Resistance | 2,500 N / 100 mm |
| Wind & Ice Loading | Meets National Electrical Safety Code (NESC) |
| Operating Temperature | -40°C to +70°C |
Armored Direct-Burial Optical Cables
Semita double-jacket armored optical fiber cables are designed for direct burial in harsh civil engineering environments, rocky terrains, and high rodent-threat areas. Featuring dual layers of High-Density Polyethylene with intermediate corrugated steel tape (CST) and high-tensile steel wire armoring, these cables withstand extreme compressive forces without conduit protection.
Key Engineering Features
- Corrugated steel tape and steel wire armoring resist up to 3,000 N crush force
- Double HDPE sheath prevents chemical and petrochemical penetration from soil
- Water-swellable tape and dry yarns form an instantaneous water-blocking barrier
- 100% rodent, termite, and severe civil impact proof
- Eliminates need for expensive protective concrete ducting in direct burial runs
Approved Applications & Deployments
Technical Performance Specifications
| Core Counts Available | 12, 24, 48, 96, 144, 288 Cores |
|---|---|
| Fiber Standard | Singlemode ITU-T G.652.D / G.657.A1 |
| Armor Construction | Corrugated Steel Tape (CST) + Steel Wire Armor |
| Sheathing Layers | Double Jacket Heavy-Duty UV HDPE |
| Crush Resistance | 3,000 N / 100 mm (Short Term) |
| Tensile Load Rating | 3,000 N (Short Term) / 1,500 N (Long Term) |
| Water Barrier | Dry Water-Swellable Yarns & Tapes |
| Compliance | Telcordia GR-20-CORE, IEC 60794 |
| Operating Temperature | -40°C to +75°C |
Deploy High-Reliability Optical Fiber Cables & FTTx with Semita
Whether you require customized cable constructions, high-precision optical attenuation tolerances, or fast-track batch delivery across India and global hubs, our engineers are ready to assist.