FTTH Drop Cable Technical Q&A

■ Fiber Specifications  

Q1: In case of the FTTH drop cable, what would be the various cores of fiber available? 

A1: Frequent arrangements in which are 1, 2, or 4 cores. Single configurations, for example, 6, 8 core is also an alternative for certain cases.

Q2: What type of fiber is used: single-mode or multi-mode? What standards does it meet? 

A2: It is often 50/125 μm multi-mode fiber with specs of ITU-T G.651.1 or ISO/IEC 11801 standard.

Q3: What is the core/cladding diameter of the fiber? 

A3: 9/125 μm for single-mode fiber.

Q4: How about other optical performance metrics to include insertion loss and return loss values? 

A4: The insertion loss is usually ≤ 0.35 dB/km, and a return loss ≥ 60 dB for high-quality single-mode fiber.

■ Cable Construction 

Q5: What sort of cable network is used and how the power is supplied to it? 

A5: FTTH drop cable can be flat or round, containing FRP (fiber-reinforced plastic) or even steel wires as cable strengthening agents.

Q6: What material is the outer jacket? Is the suit resistant to UV and flame? 

A6: The majority is out of LSZH or UV-resistant PE jackets which are ideal for indoor/outdoor usage and compliant with flame-retardant standard.

■ Mechanical Performance 

Q7: What tensile strengths are given for the cable? 

A7: The short-term tensile strength of between 80 and 150 N; while the long-term would be about 40 to 80 N depending on the structure.

Q8: And what is the minimum bending radius? 

A8: For static use: ≥10 times the cable diameter; for dynamic use: ≥20 times the diameter.

■ Environmental Performance 

Q9: What range of temperature working condition is accepted? 

A9: Indoors: -20°C to +60°C for indoor cables; Outdoor versions reach as low as -40°C to +70°C.

Q10: Is the type of cable waterproof or rodent-proof? 

A10: These outdoor FTTH drop wires are usually water-blocked and sometimes armored with rodent-resistant material too.

■ Installation Parameters 

Q11: How much is the allowed maximum pulling force for underground installation? 

A11: Normally ≤150N; it should be sufficiently light to prevent fiber breakage from excessive tensioning.

Q12: Can the cable used be either aerial and conduit installations? 

A12: A flat drop cable can certainly be used either in aerial, conduit, or wall-mounted structures.

■ Standards and Certifications 

Q13: What compliance and standards codes are for the FTTH drop cable? 

A13: IEC 60794-2, ITU-T G.657, ISO/IEC 11801, RoHS, Telcordia GR-20 (where applicable).

Q14: Do you have any ISO, CE or similar certification? 

A14: Indeed, the majority of the suppliers are equipped with the ISO 9001, CE, RoHS, and other certifications.

■ Testing & Quality Control 

Q15: To which kind of test results provided an OTDR and IL/RL? 

A15: Yes, factory testing involves OTDR, insertion loss, and return loss measurements, as noted at the placement facilities.

Q16: Are 3rd-party tests accredited? 

A16: Located mostly in document pool, can be provided as well per project needs.

■ Dimensions & Weight 

Q17: What is the item's outer dimension and the weight of the line? 

A17: Sheath: 2×5 mm to 3×6 mm; flat cables: approx. 10–25 kg/km.

Q18: How flexible and lightweight is the cable? Is it sufficient for indoor installation? 

A18: It could be, conceived to provide flexibility and routing through walls and ducts that is free of tension.

■ Packaging & Delivery 

Q19: How will cable be packaged for delivery? 

A19: It is usually wrapped on wooden wheels and plastic spools, and has a standard length of 500m up to 2000m.

Q20: Are there an option of a personalized label or specified length of a drum? 

A20: Yes, labeling with case numbers or a logo is available.

■ Marking & Identification 

Q21: Is there a skin layer that can be used to indicate length and attach identification? 

A21: Certainly, cable marked specifications such as the number of meters and model/batch number are both printed on the sheath.

Q22: Is it permissible for custom printing onto the cable's jacket? 

A22: Sure, the OEM printing service such as the logo, barcode, and serial number is available.

■ Accessories & Kits  

Q23: Are there accessories like connectors and clamps also included? 

A23: Same is true i.e. we can deliver SC/APC connectors, wall mount adapters, sleeves, boxes, etc. if demanded.

Q24: Are the accessories matching the approved quality worldwide? 

A24: The accessories you asked for do meet the relevant IEC/TIA/ISO standards.

■ Customization & OEM 

Q25: May we change the kind of fiber as well as the sheath material and printing? 

A25: Yes, we understand special needs and have whole OEM/ODM service available, including G.657A1/A2 compliance, sheath color, jacket material, and custom logos printing.

Q26: Hybrid FTTH cables (fiber + power) are leave to produce? 

A26: Yes, it would be possible with the hybrid drop cables that integrate hybrid power wires or coaxial cores.

James is a technical manager and associate at Zion Communication. 

Specializes in Optical Fiber communications,  FTTH Solutions, 

Fiber optic cables,  ADSS cable, and ODN networks.

james@zion-communication.com

+86 13777460328

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