FTTH Drop Cable for Indoor and Outdoor FTTx Connections

FTTH drop cable, also called fiber drop cable, is the final cable segment used to connect an optical distribution point to a subscriber location or access endpoint in a GPON, XGS-PON or point-to-point access network. Select it by route, fiber type and count, cable shape, strength system, jacket, diameter, mechanical load and termination method.

Define indoor, outdoor, aerial or duct routing first. Then specify fiber grade and count, flat or round construction, self-support or protected structure, strength member, jacket and project rating, cable dimensions, length, mechanical limits and end condition.

Indoor drop cable is selected around building pathways, handling and project fire or smoke requirements. Outdoor cable must also match moisture, UV, temperature and mechanical exposure. Use only the environments and ratings documented for the exact model.

Flat drop cable commonly arranges fibers and strength members in a low-profile structure, while round cable provides a different pathway and protection format. Shape alone does not decide suitability; compare diameter, bend, pulling, strength, jacket and termination requirements.

Use a self-supporting construction when the drop must span an aerial route without a separate support cable, subject to the selected model’s load and installation limits. Confirm span, messenger or support element, tension, sag, clamps, wind and site conditions.

Figure-8 self-supporting drops commonly serve spans of up to about 50 m, while ASU-class all-dielectric constructions can reach roughly 100 to 120 m under suitable conditions. The actual limit depends on the model’s declared tensile rating, messenger or support element, clamps, sag, wind and site conditions, so confirm the datasheet values for the ordered model. For longer aerial routes, review the aerial ADSS span and tension considerations.

Choose from the service plan, redundant path, future reserve and terminal capacity. One or two fibers may suit a subscriber connection, while multi-fiber drop or distribution links may require more. Confirm the published configuration instead of assuming every shape supports every count.

FTTH access networks use single-mode fiber, typically ITU-T G.652.D or bend-optimized G.657.A1 and G.657.A2 in the drop section. Multimode grades such as OM3 and OM4 are not used for FTTH drops; they serve short in-building or data center links. Match the grade to the installed network and bend conditions.

G.652.D, G.657.A1 and G.657.A2 are ITU-T single-mode fiber specifications with different bend and system considerations. Match the exact fiber grade to the optical design, installed network, bend conditions and approval documents; do not substitute grades from a category-level option list.

Drop cable is the final segment from the optical distribution point to the subscriber, typically one to four fibers over a short route, with multi-fiber models for shared drops. Distribution cable carries higher fiber counts from the OLT-side feeder toward the distribution points. For distribution and feeder families, see the fiber optic cable category.

Choose by tensile and support requirements, electrical or grounding constraints, cable construction and installation hardware. The same fiber count may be offered with different strength elements and load values, so verify the ordered model and route.

No. LSZH describes jacket-material behavior, not complete compliance with every building requirement. Confirm the exact fire, smoke, pathway and local project rating for the selected model; jacket material alone is not approval evidence.

Choose an armored or otherwise protected model when the documented route requires additional crush, moisture or mechanical protection. Armor does not automatically prove direct-burial suitability; confirm the model’s declared installation method, sheath and water-blocking construction.

Choose by installation workflow and network interface. Unterminated cable is field-spliced or finished with field-installable fast connectors, while a pre-terminated drop has defined connector ends and pulling requirements. State both ends, connector interface, polish, length, protection and test limits. The connector-ended workflow is covered in our pre-terminated drop cable deployment notes.

Measure the delivered length and marking against the order, then check optical performance with an OTDR trace or an insertion-loss meter at 1310 and 1550 nm. A healthy mated connector pair adds about 0.3 dB or less, and the trace should show no steps or reflections from kinks or tight bends introduced during pulling. For pre-terminated ends, ask for the insertion loss and return loss results per connector — BWNFiber supplies these test records with pre-terminated shipments on request. Keep the test record with the delivery documents so the installation crew can baseline the link before splicing.

Price follows the exact configuration, not the category. Construction, fiber grade and count, strength member, jacket and rating, length, end condition and order quantity all change the cost, so a 1F indoor simplex and a 12F toneable flat cable sit in completely different price classes. Send the configuration and quantity for an exact quotation, and ask for the catalogue to compare the published model families.

Send the route, indoor or outdoor installation, fiber grade and count, cable shape and diameter, strength member, self-support or armor requirement, jacket and rating, mechanical limits, length, end condition, quantity, and the documents your approval process requires.

Ask for model-level datasheets with consistent values, declared installation methods, and mechanical and temperature ratings for the exact configuration, built to recognized references such as ITU-T fiber grades and IEC 60794 cable families. Then request samples or test reports for that configuration. A supplier that documents limits per model — the approach BWNFiber takes on its published model pages — is safer than one that lists every option as available.