Blockless PLC Splitters: Compact and Reliable Signal Distribution for Fiber Networks

Passive Optical Networks (PON) have revolutionized modern fiber communications with their high bandwidth, cost-efficiency, and point-to-multipoint architecture. At the heart of every PON deployment lies a critical component: the fiber splitter. Among the various types available, blockless PLC splitters stand out as the go-to choice for compact, reliable, and scalable signal distribution.

Why Fiber Splitters Matter in PON Networks

In a typical PON architecture—such as GPON, EPON, or XG(S)-PON—one optical line terminal (OLT) connects to multiple optical network units (ONUs) through passive splitters. These splitters take a single optical signal and distribute it evenly to many users.

This is where PLC (Planar Lightwave Circuit) splitters come into play. Compared to older FBT (Fused Biconic Taper) technology, PLC splitters deliver:

Better wavelength uniformity
Higher split ratios (up to 1×64)
Lower insertion loss over broad bandwidths

And in compact scenarios—like FTTH drop terminals or street cabinet deployments—blockless PLC splitters offer a streamlined, efficient design.

What Are Blockless PLC Splitters?

Blockless PLC splitters eliminate the traditional ABS or LGX casing. Instead, the splitter module is protected with a tight-buffered jacket (commonly 0.9mm), allowing direct installation into splice trays, closures, or terminal boxes without taking up valuable space.

Key Benefits:

Space-Saving: Ideal for dense fiber trays and compact enclosures
Cost-Efficient: Lower material and packaging costs
Customizable: Available in 1×N configurations
Easy Handling: Pre-terminated connectors reduce splicing time

Role in PON Architectures

In PON systems, blockless PLC splitters are typically installed:

Location	Purpose
Central Office (CO)	Primary split near the OLT, e.g., 1×16 or 1×32
Outdoor Cabinets	Secondary split for mid-mile fanout
Customer Premises	Final split to user ports, typically 1×2 or 1×4
Splice Closures	Hidden deployment in underground or aerial networks

The compact form factor enables seamless integration into existing PON fiber management systems without bulky casings or additional hardware.

Why Choose Blockless Splitters for PON?

Deploying blockless PLC splitters in PON environments offers network engineers:

√ Greater Layout Flexibility — especially in constrained or legacy installations
√ Lower Deployment Time — thanks to ready-to-install, pre-connectorized designs
√ Reliable Signal Balance — ensures equal power distribution to each ONU
√ Future Scalability — easy to upgrade from 1×8 to 1×32 without redesigning enclosures

Blockless PLC Splitter Solutions

supplies a wide range of blockless PLC splitters tailored for PON deployments:

1×2, 1×4, 1×8, 1×16, 1×32, 1×64 options
G657A1 singlemode fiber
Wavelength range: 1260–1650nm
Connector types: SC/APC, LC/UPC, FC/APC (customizable)
Packaging: 0.9mm tight buffer, 2.0mm jacket, or customer-specified

Final Thoughts

Whether you’re building a new PON network or upgrading an existing infrastructure, blockless PLC splitters are a reliable and efficient choice for distributing optical signals. With compact size, stable performance, and full customization support, they’re a go-to solution for today’s high-density optical deployments.