{"id":2918,"date":"2026-06-08T21:00:26","date_gmt":"2026-06-08T13:00:26","guid":{"rendered":"http:\/\/www.mijin-design.com\/blog\/?p=2918"},"modified":"2026-06-08T21:00:26","modified_gmt":"2026-06-08T13:00:26","slug":"how-to-select-between-fbt-and-plc-fiber-splitters-40d0-ac60d9","status":"publish","type":"post","link":"http:\/\/www.mijin-design.com\/blog\/2026\/06\/08\/how-to-select-between-fbt-and-plc-fiber-splitters-40d0-ac60d9\/","title":{"rendered":"How to select between FBT and PLC fiber splitters?"},"content":{"rendered":"

Fiber splitters are crucial components in fiber optic networks, playing a vital role in distributing optical signals from a single input fiber to multiple output fibers. Among the various types of fiber splitters, FBT (Fused Biconical Taper) and PLC (Planar Lightwave Circuit) fiber splitters are two of the most commonly used. As a fiber splitter supplier, I often encounter customers who are unsure about which type of splitter to choose. In this blog post, I will provide a detailed comparison of FBT and PLC fiber splitters to help you make an informed decision. Fiber Splitter<\/a><\/p>\n

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Understanding FBT and PLC Fiber Splitters<\/h3>\n

FBT Fiber Splitters<\/h4>\n

FBT fiber splitters are made by fusing and tapering two or more optical fibers together. This process creates a region where the optical signals can be split between the fibers. FBT splitters are known for their simplicity, reliability, and relatively low cost. They are suitable for applications where a small number of splits are required, typically up to 1:16 or 1:32.<\/p>\n

PLC Fiber Splitters<\/h4>\n

PLC fiber splitters are fabricated using semiconductor manufacturing techniques on a silica substrate. The optical waveguide structure on the substrate allows for precise splitting of optical signals. PLC splitters offer high precision, low insertion loss, and excellent uniformity across multiple output ports. They are ideal for applications that require a large number of splits, such as in fiber-to-the-home (FTTH) networks, where splits of 1:64 or even 1:128 are common.<\/p>\n

Key Factors to Consider When Selecting Between FBT and PLC Fiber Splitters<\/h3>\n

Splitting Ratio<\/h4>\n

The splitting ratio is one of the most important factors to consider when choosing between FBT and PLC fiber splitters. If you need a small splitting ratio, such as 1:2, 1:4, or 1:8, FBT splitters are a good choice. They are cost-effective and can provide reliable performance for these lower splitting ratios. However, if you require a higher splitting ratio, such as 1:32, 1:64, or 1:128, PLC splitters are the better option. Their precise manufacturing process allows for consistent splitting across a large number of output ports.<\/p>\n

Insertion Loss<\/h4>\n

Insertion loss is the amount of optical power that is lost as the signal passes through the splitter. Lower insertion loss means less signal degradation and better overall performance. PLC splitters generally have lower insertion loss compared to FBT splitters, especially for higher splitting ratios. This makes them more suitable for long-distance applications or where signal quality is critical.<\/p>\n

Uniformity<\/h4>\n

Uniformity refers to the consistency of the splitting ratio across all output ports. PLC splitters offer excellent uniformity, ensuring that each output port receives an equal amount of optical power. This is important in applications where multiple users or devices need to receive the same signal strength. FBT splitters may have slightly less uniformity, especially for higher splitting ratios.<\/p>\n

Cost<\/h4>\n

Cost is always a consideration when selecting any component for a fiber optic network. FBT splitters are generally less expensive than PLC splitters, especially for lower splitting ratios. However, as the splitting ratio increases, the cost difference between the two types of splitters becomes less significant. In some cases, the performance benefits of PLC splitters may justify the higher cost, especially for large-scale projects.<\/p>\n

Environmental Conditions<\/h4>\n

The operating environment can also affect the performance and reliability of fiber splitters. FBT splitters are more robust and can withstand a wider range of environmental conditions, including temperature variations and mechanical stress. They are suitable for outdoor applications or harsh environments. PLC splitters, on the other hand, are more sensitive to environmental factors and may require additional protection.<\/p>\n

Application Scenarios<\/h3>\n

FBT Fiber Splitters<\/h4>\n