Splitter Interface Type

Fiber optic splitters come in various interface types, including bare fiber, micro tube, and ABS box configurations, each suited for different installation and operational scenarios.

Overview of Splitter Interfaces

Fiber optic splitters are passive devices that divide an input optical signal into multiple outputs. The interface type refers to the physical form and connectorization of the splitter, which affects installation, maintenance, and network flexibility . The main interface types include:

• Bare Fiber Splitters: These splitters have no connectors at any end, leaving only the bare fiber. They are typically spliced directly to the network fibers and are ideal for permanent installations where disassembly is infrequent . They offer minimal insertion loss and compact size.
• Micro Tube PLC Splitters: The PLC chip is encapsulated in a micro steel tube, providing protection while still allowing splicing during installation. These are commonly used inside junction boxes or terminal boxes and are suitable for indoor or semi-protected environments .
• ABS Box PLC Splitters: Encased in an ABS plastic box, these splitters are more robust and flexible for deployment. They are widely used in indoor wiring, fiber distributed sensing, and FTTH access networks. The ABS housing allows for easier handling, mounting, and protection against environmental factors .

Connector Considerations

Splitters may also come with pre-terminated connectors (e.g., SC, LC, or FC) or require field splicing. Connectorized splitters simplify installation and maintenance but may increase cost and size. Bare fiber or micro tube types are often preferred in high-density or cost-sensitive deployments .

Technology Impact

The interface type is closely linked to the splitter technology:

• PLC (Planar Lightwave Circuit) Splitters: Standard for modern FTTH networks, offering uniform power distribution and high reliability. PLC splitters are available in all interface types (bare fiber, micro tube, ABS box) and support large split ratios like 1:32 or 1:64 .
• FBT (Fused Biconical Taper) Splitters: Typically used for small split ratios (1:2, 1:4) and lower-cost applications. FBT splitters are less common in large-scale deployments and usually come in bare fiber or simple protective housings .

Practical Implications

Choosing the correct splitter interface type affects:

• Installation efficiency: Connectorized or ABS box splitters are easier to deploy in the field.
• Network scalability: Bare fiber or micro tube splitters allow flexible splicing for future expansions.
• Operational reliability: Proper housing protects against environmental damage and reduces maintenance.
• Cost: Bare fiber splitters are cheaper but require skilled splicing; ABS box splitters are more expensive but easier to handle . In summary, the splitter interface type should be selected based on deployment environment, split ratio, maintenance requirements, and network scalability, with PLC splitters being the preferred choice for modern FTTH networks.