What Is a PLC Splitter?
A PLC (Planar Lightwave Circuit) splitter is a passive optical device manufactured using semiconductor photolithography technology. It splits one input optical signal into multiple output signals evenly. PLC splitters are essential components in FTTH (Fiber to the Home) and PON (Passive Optical Network) deployments.
Langzhi Technology offers a full range of PLC splitters, including the popular 1x16 Mini Type (5,600+ sales), suitable for various FTTH scenarios.
PLC vs FBT Splitter Comparison
- PLC Splitter: Semiconductor photolithography process, wide wavelength range (1260-1650nm), excellent uniformity, compact size, ideal for PON networks
- FBT Splitter (Fused Biconical Taper): Traditional fusion tapering, lower cost for low ratios (1x2/1x4), but narrow wavelength range and poorer uniformity
For FTTH and PON networks, PLC splitters are the superior choice.
PLC Splitter Package Types
Bare Fiber Splitter
Basic packaging with bare fibers at both ends, no connectors. Fits inside splice closures for direct splicing. Compact and flexible.
ABS Box Splitter
Protective ABS plastic box with connectors (SC/APC or LC/UPC). Most common FTTH splitter type, ideal for fiber distribution boxes and ODF.
Cassette/LGX Splitter
Module design for 19-inch rack mounting. Suitable for data centers and central offices requiring centralized management.
Rack-Mount Splitter
1U standard rack height, integrates multiple splitter modules. Ideal for large central offices and aggregation nodes.
Waterproof Splitter
IP-rated protection for outdoor manholes, ducts, and harsh environments.
How to Choose the Right PLC Splitter
Step 1: Determine Split Ratio
- 1x4/1x8: Building-level distribution or secondary splitting
- 1x16: Medium-density residential, best-selling ratio
- 1x32: Most widely used in standard GPON FTTH
- 1x64: High-density, requires Class C+ optics
Step 2: Select Package Type
Match to installation environment: bare fiber for splice closures, ABS box for distribution cabinets, cassette for rack mounting.
Step 3: Confirm Connector Type
SC/APC recommended for GPON (angled polish reduces back-reflection). LC for high-density port scenarios.
Step 4: Check Power Budget
Ensure OLT optical power minus splitter loss leaves enough margin for the ONU. 1x32 splitter loss ≈ 16dB.
Split Ratio Loss Reference
- 1x2: ≤3.8dB
- 1x4: ≤7.2dB
- 1x8: ≤10.5dB
- 1x16: ≤13.8dB
- 1x32: ≤16.5dB
- 1x64: ≤19.5dB
Values per Telcordia GR-1209-CORE standard.
Conclusion
When selecting a PLC splitter, consider split ratio, package type, connector type, and optical power budget. Langzhi Technology provides quality-tested PLC splitters for all GPON/EPON FTTH deployment scenarios.
