Overview
Dual-core drop cable is a specialized fiber optic cable featuring two optical fibers within a single protective sheath. It is widely deployed in fiber-to-the-home (FTTH) networks and indoor/outdoor telecommunication installations due to its compact design and ease of handling. Unlike bulkier multi-fiber cables, dual-core variants prioritize flexibility and cost-efficiency for last-mile connectivity. The cable's construction typically includes strain-resistant elements like aramid yarns and a durable outer jacket compliant with industry standards for fire resistance and environmental durability.
Structure and Working Principle
The cable comprises two parallel optical fibers (commonly 250µm coated fibers) encapsulated in a colored coding tube for identification. These are surrounded by strength members (e.g., Kevlar) and an outer PVC or LSZH (Low Smoke Zero Halogen) jacket. Signal transmission relies on total internal reflection within the fiber cores. The dual-core design allows simultaneous bidirectional communication or redundancy, making it suitable for applications requiring backup paths or separate upstream/downstream channels. Bend-insensitive fiber variants are often used to minimize signal loss during tight installations.
Key Features
1. **Compact Design**: The flat or round sheath profile enables easy routing through conduits and corners. 2. **Installation Efficiency**: Pre-connectorized options with SC/LC connectors reduce deployment time. 3. **Environmental Resistance**: UV-stable jackets for outdoor use and rodent-resistant formulations are available. Tensile ratings typically range from 100N to 200N, accommodating aerial or duct installations. Some variants incorporate tear-resistant ripcords for simplified termination.
Application Areas
Primary applications include: - **FTTH Networks**: Connecting distribution points to customer premises. - **Data Centers**: Short inter-rack links where space optimization is critical. - **CCTV Systems**: High-bandwidth video transmission for security cameras. Industrial variants with armored sheathing are used in harsh environments like oil refineries or mining operations. The cable’s flexibility also makes it ideal for temporary installations at events or military deployments.
Maintenance and Precautions
Regular inspection for jacket integrity and bend radius compliance (usually >30mm) is recommended. Avoid crushing loads and sharp bends during installation to prevent micro-cracks in fibers. For outdoor deployments, use waterproof gel-filled cables or ensure proper sealing of termination boxes. Cleaning connector end-faces with lint-free wipes and isopropyl alcohol prevents signal degradation from contamination.
B2B Procurement Guide
When sourcing dual-core drop cables: 1. **Specifications**: Confirm fiber type (G.652.D for single-mode, OM1-OM5 for multi-mode), jacket material (PVC/LSZH), and temperature range (-40°C to +70°C for outdoor use). 2. **Certifications**: Look for IEC 60794 or Telcordia GR-20 compliance. 3. **Supplier Evaluation**: Prioritize manufacturers with ISO 9001 certification and batch traceability. Bulk purchases (500m+ reels) often attract 10-15% discounts. Sample testing for insertion loss (<0.4dB/km at 1310nm for single-mode) is advisable before large orders.
Related Manufacturers
- 主营：上上电缆、电线电缆、电力电缆、双绞线、光伏电缆、新能源电缆、高压电缆、防火电缆、充电桩电缆、家装电线
- 主营：道路隔离立柱、供水管道警示桩、电缆支架、双股示踪线、警示板、路政隔离栏、管托、保温管道、示踪线、警示带、标志桩、钢管警示柱、钢管防护栏、钢管挡车器、铸铁井盖、防腐钢管
- 主营：纯铜线、皮绝缘层、电线电缆、双绞线缆、阻燃电线、阻燃多股、线缆多股、家装电线、阻燃软线、乙烯绝缘、电缆多股、家用电线、电线多股、多股铜芯、护套电线、电力电缆、绝缘护套、单皮绝缘、铠装电缆、工程电缆、铜线强弱电、矿物质电缆、强弱电线缆、电线强弱电、扁形电缆线
- 主营：通信室外光缆、矿用阻燃光缆、直埋光缆、皮线光缆、8字型自承式光缆、气吹光缆、非金属光缆、室内光缆
- 主营：opgw光缆、OPGW、adss光缆、单模2芯皮线、24芯adss光缆、电力光缆、阻燃光缆、GYTA53光缆、gyftzy光缆、24芯光缆、管道导引光缆、铠装光缆、gyta光缆、光纤复合架空地线、架空光缆、光缆gyts、地埋光缆、gytc8a光缆、oppc光缆、12芯光纤、非铠光缆、通信光缆、室内光缆
- 主营：光分器、理线槽、过线箱、成品皮线、分光箱、纤跳线、配线箱、接头盒、分光器、分纤箱、弱电箱、分路器、熔纤盘、配线柜、连接器、冷轧板、分线箱、配线架、单元箱、光交箱、楼道箱、镀锌板、布线箱、插座模块、光纤机柜
- 主营：水晶头、光纤光缆、网络跳线、室内单模双芯、超五类屏蔽、交换机、会议平板、网络机柜、配线架、对讲机、网络模块、网络面板、IP电话、摄像头、麦克风、视频会议、测试仪、光纤跳线、音响线、安普康光模块、康普网线、泛达网线、安普康网线、MMC网线
- 主营：光缆线、非金属、复合缆、双绞线、外护套、中心管、网络线、国标线、工程线、光纤带、接头盒、室内超、配线架、8芯12芯、非屏蔽、光纤缆、聚乙烯、芯光缆、类网线、光纤2芯、光纤6芯、光纤1芯、网线4芯、抗拉4芯、光缆铝带
- 主营：adss自承、gjxh光纤、皮纤1芯、成品皮线、接头皮线、opgw光缆、ftth入户、芯4接头、gyta光缆、adss光缆、定制8芯、定制2芯、4芯室内、ftth光纤、光缆gjxh、光缆gyts、定制24芯、光缆单模、室内光缆、室外光缆、铠装光缆、带状光缆、电力光缆
- 主营：RVV护套线、RVVP屏蔽线、网线、RVS双绞消防线、双绞线、超五类网线、六类网线、计算机电缆、网络线、室外网线、屏蔽网线、低烟无卤电线、耐火电线、电力电缆、消防线、控制电线、视频线、大对数电缆、室外光缆、单模光缆、电源线、平行线、阻燃电线、宽带线
- 主营：钢绞线、控制电缆、绝缘架空线、双芯室内光缆、钢芯铝绞线、镀锌钢绞线、计算机电缆、特种电缆、矿用电缆、OPGW光缆、感温电缆、像套电缆、通讯电缆、电力电缆、电力金具
- 主营：绝缘线、电源线、中压电力电缆、低压电力电缆、中压铝合金电力电缆、低压铝合金电力电缆、控制电缆、电线、架空绝缘电缆、光伏电缆、防水系列电力电缆、江南电缆、上上电缆、宝胜电缆、起帆电缆
- 主营：光纤光缆、室内光缆、室外光缆、皮线光缆、光纤跳线、感温光缆、铠装光缆、FC跳线、LC跳线
- 主营：阻燃铜芯、电线主线、南洋电缆、宝牌电缆
- 主营：矿物质电缆、低压电缆、控制电缆、绝缘电缆、信号电缆
- 主营：补漆笔、滚筒刷、高度尺、电焊线、手柄配、冲火机、焊把线、喷火枪、捕鼠器、放大镜、推雪板、高压锅、穿管器、氧气管、除雪器、破冰铲、显微镜、滚涂机、老鼠夹、扬声器、除雪铲、电焊机、固定器、清洗剂、助焊剂