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Output Power -14.50
dBm Per subscriber port
Total Split Ratio 1:8
Ratio PLC Splitter
Total Loss 9.5
dB Insertion loss
Power Budget 19.5
dB Input to output
Output Power -14.50
dBm After cascade
Total Split 1:4
Ratio Primary + Cascade
Output Power -21.80
dBm After cascade
Total Split 1:8
Ratio Primary + Cascade
Parameter Value Unit Description
Fiber Splitter Pro with Dual Cascade Support for PLC & FBT This advanced calculator supports both PLC and FBT splitters with dual cascade capabilities for complex network designs.
Dual Cascade Examples Type Primary Split Port 1 Cascade Port 2 Cascade Application PLC 1:2 1:4 (25%) 1:8 (75%) Business/Residential mix PLC 1:2 1:8 (60%) 1:16 (40%) Different density areas FBT 25:75 1:4 (25%) 1:8 (75%) Premium/Standard services FBT 40:60 1:2 (40%) 1:16 (60%) Business/High-density residential
How to Use Dual Cascade Select Splitter Type: Choose PLC or FBTConfigure Primary: Select split ratio (1:2 for PLC, ratio for FBT)Enable Dual Cascade: Check "Enable Dual Cascade" boxConfigure Ports: Set different cascade ratios for each portView Results: See separate power calculations for both pathsCommon Use Cases PLC 1:2 with 1:4/1:8 First port: Premium service (1:4), Second port: Standard service (1:8)
FBT 25:75 with 1:4/1:8 25% premium (1:4), 75% standard (1:8) distribution
PLC 1:2 with 1:8/1:16 Different subscriber densities in two areas
Frequently Asked Questions
Can I use dual cascade with PLC 1:2 splitter?
Yes! PLC 1:2 with dual cascade works like this:
Select PLC splitter type Choose "1:2" from PLC dropdown Check "Enable Dual Cascade" checkbox Set Port 1 Cascade (e.g., 1:4) Set Port 2 Cascade (e.g., 1:8) Calculator will show: 1:2 → Port 1: 1:4, Port 2: 1:8 This creates a 1:2 primary split, then each port splits further with different ratios.
How does FBT dual cascade differ from PLC dual cascade?
Key differences:
PLC Dual Cascade: 1:2 split (50%/50%) then different cascadesFBT Dual Cascade: Uneven split (e.g., 25%/75%) then different cascadesPower Distribution: PLC gives equal power to both ports, FBT gives different powerApplications: PLC: When you need equal power but different split ratios FBT: When you need different power levels and different split ratios
What's the maximum total split ratio with dual cascade?
Maximum Configurations:
PLC Maximum: 1:2 (primary) → 1:64 (Port 1) + 1:64 (Port 2) = Total 1:128
FBT Maximum: 50:50 (primary) → 1:64 (Port 1) + 1:64 (Port 2) = Total 1:128
Practical Limits:
GPON systems typically max at 1:64 per port Total loss should not exceed ~28 dB for reliable operation Consider using higher input power for large splits Always check manufacturer specifications for maximum splits Need Help with Complex Network Design? Our fiber optic experts can help design and optimize your complex cascade networks.
⚠️ Important Disclaimer: This calculator provides theoretical estimates for complex cascade configurations. Actual network performance depends on multiple factors including splitter quality, wavelength dependence, temperature variations, and precise alignment. Always conduct field measurements and consult manufacturer specifications for critical deployments.